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XC3S50-4TQG144C - 50K Spartan-3 FPGA, 144-TQFP | AMD Xilinx
XC3S50-4TQG144C

XC3S50-4TQG144C - 50K Spartan-3 FPGA, 144-TQFP | AMD Xilinx

AMD Xilinx XC3S50-4TQG144C is a Spartan-3 field-programmable gate array with 50,000 system gates, 1,728 logic cells, and a 144-lead TQFP package. The device operates from a 1.14 V to 1.26 V core supply, uses 90 nm fabrication technology, and is offered in a commercial-temperature grade specified for a 0°C to 85°C operating junction range. These characteristics place it in the FPGA and CPLD category, where configurable logic replaces a fixed application-specific integrated circuit. A field-programmable gate array is a semiconductor containing programmable lookup tables, routing, block memory, and configurable input/output resources. It sits within the broader programmable-logic hierarchy of FPGA and CPLD devices, enabling parallel digital logic, control functions, serial communication, and embedded memory to be consolidated into one configurable device. The XC3S50-4TQG144C provides 97 dedicated I/O resources according to its distributor listing, giving a designer a substantial interface complement relative to its 50,000-system-gate logic capacity. The Spartan-3 architecture combines configurable logic with embedded block RAM and dedicated input/output resources in a single device. Its stated 630 MHz performance figure makes it suitable for clocked control logic, data acquisition, industrial interfaces, communications equipment, and embedded system prototypes. The four-speed-grade suffix identifies a device positioned for a maximum 630 MHz operation, while the TQG144 portion identifies the physical 144-pin TQFP package used for surface-mount PCB assembly. The 90 nm process and 1.2 V core supply provide useful context when comparing this device with later programmable-logic families. A 1.2 V core requires appropriate on-board supply regulation and decoupling, while the 144-pin package offers a conventional quad-flat lead arrangement that can simplify inspection and rework. Designers should still follow the AMD Spartan-3 selection guide, pinout, configuration guidance, and power-supply recommendations for the exact device variant. Typical uses include industrial automation, communications, automotive electronics, embedded control, data-capture, and general digital prototyping. In these applications, the FPGA can implement parallel pipelines or state machines while its programmable I/O interfaces external converters, sensors, memories, and communications transceivers. Its commercial operating grade and 50,000-system-gate capacity make it most appropriate when moderate logic density is needed without moving to a larger package. The principal design consideration is migration and configuration reliability. PCB design must preserve the TQFP-144 footprint, power and ground distribution, decoupling, configuration interface, and exposed I/O constraints of the selected Spartan-3 device. Although XC3S50AN-4TQG144C appears in cross-reference results, designers must confirm that configuration behavior, supported I/O standards, memory resources, and power requirements are fully interchangeable before using it as a replacement. This page consolidates verified distributor specifications, package details, temperature information, and candidate replacement data with practical selection guidance. It also distinguishes true same-package options from alternatives that require a different package, helping engineers reduce procurement and PCB-rework risk.

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XC3S50-4TQG144I - 50K Spartan-3 FPGA, 144-TQFP | AMD
XC3S50-4TQG144I

XC3S50-4TQG144I - 50K Spartan-3 FPGA, 144-TQFP | AMD

The AMD XC3S50-4TQG144I is a Spartan-3 field-programmable gate array in a 144-pin TQFP package, built around 50,000 system gates, 1,728 logic cells, 192 configurable logic blocks, 97 user I/Os, and 73,728 bits of block RAM. The device uses a 90 nm process and a nominal 1.2 V core supply, making it suitable for compact embedded, industrial-control, communications, and cost-sensitive logic applications. Its industrial-temperature suffix identifies the XC3S50-4TQG144I as an extended-temperature option for systems requiring operation beyond commercial-temperature limits. A field-programmable gate array is a semiconductor device whose configurable logic, block memory, and programmable I/O can be programmed after manufacture. The Spartan-3 FPGA family belongs to the broader FPGA and programmable-logic hierarchy, while the XC3S50 device provides a balance of logic density, memory, and I/O capacity for control logic, data acquisition, protocol bridging, embedded signal processing, and general-purpose parallel processing. The XC3S50-4TQG144I is therefore a programmable-logic alternative to a collection of fixed-function glue-logic devices when design flexibility and field updates are important. Key resources include 50,000 equivalent system gates, 1,728 logic cells, 192 CLBs, 97 user I/Os, and 73,728 bits of block RAM. The -4 speed designation identifies the device performance grade, while the TQG144 package provides a 144-pin surface-mount footprint. The 1.2 V core operating point supports low-voltage digital core operation, while external circuitry supplies the board-level I/O and power requirements. The Spartan-3 architecture supports parallel programmable logic alongside dedicated block RAM for buffering, FIFOs, and data storage. This combination makes the XC3S50-4TQG144I useful for industrial controllers, communications interfaces, test equipment, embedded control systems, and sensor or acquisition platforms. The 97 available user I/Os provide connectivity for control signals, serial interfaces implemented in programmable logic, memory interfaces, and external peripherals. Designers should verify the device-specific pinout, configuration interface, power rails, decoupling requirements, and supported I/O standards against the official Spartan-3 documentation before layout or schematic release. The TQFP package is pin-compatible with other verified 144-pin Spartan-3 variants only where the exact device, speed grade, package code, and electrical requirements match. Configuration should also include a defined startup path, suitable clocking, and adequate power-supply sequencing. This page consolidates verified distributor and manufacturer-linked specifications, practical application guidance, same-footprint replacement candidates, and design cautions. It is intended to help engineers identify whether the XC3S50-4TQG144I matches the required logic density, memory capacity, package, temperature class, and supply requirements without relying on incomplete catalog summaries.

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XC3S50-4VQ100C - 50K Spartan-3 FPGA | AMD | 100-TQFP
XC3S50-4VQ100C

XC3S50-4VQ100C - 50K Spartan-3 FPGA | AMD | 100-TQFP

The AMD/Xilinx XC3S50-4VQ100C is a 50,000-system-gate Spartan-3 field-programmable gate array with 1,728 logic cells, 63 I/O, a 1.2 V core supply, and a -4 speed grade, supplied in a 100-TQFP package. This commercial-temperature FPGA is positioned for compact, cost-sensitive embedded logic, control, and interface designs. A field-programmable gate array is a semiconductor whose logic fabric, programmable interconnect, and I/O blocks can be configured after manufacture. The XC3S50-4VQ100C belongs to the Spartan-3 FPGA family, combining configurable logic resources with dedicated digital input/output capability in a low-density package suitable for space-constrained designs. The verified device information identifies 50,000 system gates, 1,728 logic cells, 63 I/O, and a maximum stated clock frequency of 630 MHz. The -4 suffix denotes the performance grade, while VQ100 identifies the 100-pin package. The core supply is listed as 1.2 V, with an operating supply range of 1.14 V to 1.26 V and a commercial junction-temperature range of 0°C to 85°C. Unlike an application-specific integrated circuit, this FPGA permits configuration changes during development and production. That flexibility supports parallel data paths, state machines, protocol bridging, control logic, and small embedded processing systems. Its 100-pin TQFP package also exposes more general-purpose I/O than lower-density packages, although exact bank voltage, input threshold, and pin-specific capabilities require the official device documentation. Typical applications include industrial control, telecommunications support logic, consumer electronics, and compact embedded systems. The 1.2 V core makes board-level power planning important: designers should provide stable, decoupled core rails and use compatible external I/O standards according to the selected bank configuration. Tool-chain, configuration-memory, and legacy-device considerations should also be reviewed before committing a new production design. For an existing 100-TQFP Spartan-3 PCB, a replacement must be checked for exact speed grade, temperature grade, pin mapping, supply requirements, I/O standards, configuration interface, and programming-file compatibility. This page combines verified distributor specifications with practical selection, sourcing, and migration guidance rather than relying only on a catalog description.

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XC3S50-4VQ100I - 50K Gate Spartan-3 FPGA | AMD
XC3S50-4VQ100I

XC3S50-4VQ100I - 50K Gate Spartan-3 FPGA | AMD

The AMD XC3S50-4VQ100I is a Spartan-3 field-programmable gate array with 50,000 system gates, 1,728 logic cells, 63 user I/Os, and a 1.2 V core supply in a 100-pin VTQFP package. The -4 suffix identifies the device speed grade, while the I suffix identifies the industrial-temperature option. Verified distributor listings identify the device as a 100-TQFP FPGA, and other supplied technical listings identify its process technology as 90 nm and maximum clocking as 630 MHz. An FPGA is a programmable semiconductor in the semiconductor and digital-logic hierarchy. Its configurable logic blocks, programmable interconnect, block RAM, and I/O resources let engineers implement parallel data paths, control logic, signal processing, and system interfaces in one device. Unlike a fixed-function application-specific integrated circuit, an FPGA can be reprogrammed during development and field updates when the architecture permits it. The XC3S50 provides 1,728 logic cells and 50,000 system gates, making it suited to compact control, interface, communications, instrumentation, and embedded-logic designs. Its 63 user I/Os provide connections for digital control, status, clocks, data buses, and serial peripherals. A 1.2 V core operating voltage reduces system power requirements, while the listed 2.5 V and 3.3 V supplies support associated I/O requirements where those supply rails are applicable to the selected configuration. The Spartan-3 architecture is intended for cost-sensitive designs that require programmable hardware without the resource level of a larger FPGA. The supplied data reports 90 nm process technology and a 630 MHz device figure, but achievable system timing remains design-dependent. External memory interfaces, clocking, constraints, I/O standards, routing congestion, and timing closure determine actual system performance rather than a single advertised device frequency. Typical uses include industrial automation, test and measurement, consumer electronics, communications control, embedded instrumentation, and general-purpose digital signal processing. Because this is an older FPGA family, engineers should confirm tool support, stock, lifecycle status, configuration-device support, and the exact pinout before beginning a new production design. The verified data does not establish whether it is currently active or discontinued. PCB design must preserve the 100-pin package footprint and exact I/O assignments. Decoupling, configuration startup, clock routing, I/O standards, and signal-integrity constraints should follow the relevant Xilinx or AMD device documentation. Do not treat the conflicting package descriptions in secondary listings as authoritative; the target is identified as a 100-pin TQFP/VTQFP device. This page combines verified distributor specifications, cross-reference findings, practical design guidance, and candid limitations. It distinguishes confirmed values from missing technical data so procurement and engineering teams can evaluate the FPGA without conflating package variants or assuming compatibility that the supplied evidence does not establish.

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XC3S50-4VQG100C - 50K Spartan-3 FPGA | Xilinx | 100-TQFP
XC3S50-4VQG100C

XC3S50-4VQG100C - 50K Spartan-3 FPGA | Xilinx | 100-TQFP

The Xilinx XC3S50-4VQG100C is a Spartan-3 field-programmable gate array with 50,000 system gates, 1,584 logic cells, a -4 speed grade, and a 1.2 V supply in a 100-pin TQFP package. The device belongs to the Spartan-3 FPGA family and provides configurable logic, block RAM, and programmable I/O for embedded control, digital signal processing, prototyping, and general-purpose hardware acceleration. A field-programmable gate array is a semiconductor whose digital logic and interconnect can be configured after fabrication. Within the technology hierarchy, an FPGA is a programmable logic device and a semiconductor. The Spartan-3 family targets cost-sensitive designs requiring more capability than basic programmable logic devices while maintaining relatively low system complexity. The XC3S50-4VQG100C combines 50,000 system gates with 72 Kb of block RAM and a stated 630 MHz performance figure. The principal device features include 90 nm fabrication technology, 1.2 V core voltage, a 100-pin TQFP package, and a -4 performance designation. Its 1,584 logic cells provide parallel hardware resources for control logic, data acquisition, communications, and signal-processing functions. The available distributor records identify a 0°C to 85°C commercial operating-temperature range, while exact I/O counts, supported I/O standards, and detailed timing constraints require confirmation in the manufacturer documentation. Spartan-3 devices use configurable logic blocks, programmable interconnect, and block RAM to implement digital systems. This architecture allows parallel datapaths and state-machine logic to execute concurrently instead of relying on sequential software instructions. The -4 speed grade identifies a specific performance class within the Spartan-3 family, but clocking and I/O timing must be evaluated against the design's actual constraints and the selected device documentation. Typical uses include industrial control, instrument interfaces, industrial communications, educational FPGA platforms, digital signal processing, and low-cost embedded systems. The 100-pin package also makes the device suitable for boards that need a meaningful number of I/O without moving to a large ball-grid-array package. Designers should verify voltage-tolerant I/O, differential I/O availability, pin constraints, and board-level power requirements before schematic capture. A primary design consideration is decoupling around the 1.2 V core and any supported I/O supplies. Place the required capacitors close to their supply pins, route high-current paths with low loop area, and use an FPGA-supported configuration scheme and clock source. Because this is an older FPGA family, toolchain availability, programming-file support, and the selected package’s exact pin map should be confirmed before committing a new design to production. This product page combines verified distributor specifications, an honest assessment of drop-in alternatives, package and sourcing information, and practical design guidance to support faster engineering evaluation while clearly identifying details that still require manufacturer-documentation verification.

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XC3S50-4VQG100I - 50K Spartan-3 FPGA, 1.2V, 100-TQFP | AMD
XC3S50-4VQG100I

XC3S50-4VQG100I - 50K Spartan-3 FPGA, 1.2V, 100-TQFP | AMD

The AMD XC3S50-4VQG100I is a Spartan-3 field-programmable gate array with 50,000 system gates, 1,728 logic cells, 192 logic blocks, and 63 I/O pins, operating from a 1.2 V core supply in a 100-pin TQFP package. The device is identified as a 4-speed-grade Spartan-3 FPGA, with a reported maximum operating frequency of 630 MHz. It is intended for compact, cost-sensitive programmable-logic designs requiring moderate logic density and a moderate pin count. A field-programmable gate array, or FPGA, is a programmable digital semiconductor that combines configurable logic blocks, programmable interconnects, and I/O resources into a single integrated circuit. FPGAs sit within the broader semiconductor hierarchy: FPGA -> programmable logic device -> digital logic IC. Unlike a fixed-function application-specific integrated circuit, an FPGA can be reconfigured after manufacture, allowing designers to implement parallel logic, control, data acquisition, communication, and embedded system functions in one device. The XC3S50-4VQG100I provides 1,728 logic cells and 63 user I/O pins according to the verified distributor and comparison data. The 1.2 V core supply and 90 nm process technology place the device in the Spartan-3 generation of AMD/Xilinx programmable logic. Its 100-pin surface-mount package provides a smaller footprint than higher-pin-count Spartan-3 devices while retaining enough I/O for control, interface, and low-to-moderate-speed parallel systems. The listed lead-free packaging designation is suitable for modern manufacturing processes, although individual procurement channels should be checked for current stock and traceability. The -4 designation identifies the device performance grade within the Spartan-3 naming system, while the I suffix identifies the industrial-temperature configuration. Verified cross-reference information lists an industrial operating range of -40 °C to +100 °C for this part. The 630 MHz figure is a device-family or comparison value and should not be treated as a guarantee that every design or I/O interface will operate at that frequency. Actual timing performance depends on the selected Spartan-3 device, clocking, I/O standards, logic utilization, routing, and timing constraints. Typical uses include industrial control logic, sensor and signal conditioning, communication interfaces, test equipment, embedded control, consumer electronics, and general-purpose prototyping. Because the FPGA is programmable, designers can implement parallel datapaths, state machines, protocol controllers, or custom interfaces without designing a fixed ASIC. The 63 I/O count is particularly useful for designs requiring multiple digital control or status signals while keeping the package reasonably compact. The main design consideration is package and pin planning. This page synthesizes verified distributor specifications, source links, and practical selection guidance; it does not invent pin functions or timing details. Before layout, engineers should obtain the official Spartan-3 family documentation and confirm the exact VQG100 pin map, bank voltages, configuration requirements, decoupling recommendations, and supported I/O standards for the selected board design. For replacements, the XC3S50-4VQG100C and related 100-pin Spartan-3 devices can be considered as same-footprint candidates where temperature grade, speed grade, device revision, and configuration details are acceptable. The XC3S50A-4VQG100I is a Spartan-3A-family option with related package information, but Spartan-3 and Spartan-3A devices should not be treated as automatically interchangeable without checking the complete pinout, configuration interface, electrical characteristics, and design-tool support.

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XC3S50-5CPG132C - 50K Spartan-3 FPGA | AMD | 132-CSPBGA
XC3S50-5CPG132C

XC3S50-5CPG132C - 50K Spartan-3 FPGA | AMD | 132-CSPBGA

The AMD XC3S50-5CPG132C is a Spartan-3 field-programmable gate array with 50K gates, 1,728 logic cells, 89 programmable I/O pins, and a 725 MHz stated operating frequency in a 132-TFBGA CSPBGA package. It uses 90 nm FPGA technology and operates from a 1.2 V core supply whose verified operating range is 1.14 V to 1.26 V. The device is a surface-mount, ball-grid package device with 132 terminals and a 0°C to 85°C junction-temperature range. A field-programmable gate array, or FPGA, is a semiconductor whose logic, interconnect, and I/O behavior can be configured after manufacture. Within the product hierarchy, the XC3S50 belongs to the Spartan-3 FPGA family and combines programmable logic, block RAM, dedicated I/O, and configurable digital interfaces on one device. This makes it suitable when designers need hardware-level parallelism and field-updatable control logic rather than a fixed instruction sequence in a microcontroller. The 50K-gate designation identifies the device as the smallest member of the supplied Spartan-3 family information, while the 1,728 logic cells provide the usable programmable-logic resource count. Its 89 programmable I/O pins provide connections to external logic, memory, communications, and control circuitry. The -5 speed designation corresponds to the verified 725 MHz figure, while the CPG132 suffix identifies the 132-ball CSPBGA package used for compact surface-mount designs. The 90 nm process generation places this device in a mature FPGA architecture whose implementation resources and toolchain are established rather than new. The 1.2 V core operation can simplify power architecture compared with older, higher-voltage programmable devices, although the board still needs regulated supplies, decoupling, configuration storage, and correct ball-grid layout support. Exact RAM, I/O-standard, timing, and configuration-memory details were not present in the supplied data and should be confirmed in the manufacturer documentation. Typical uses include industrial control, compact communication interfaces, sensor and instrumentation logic, embedded display or networking controllers, and low-cost embedded systems requiring configurable parallel processing. The 89 I/O pins are especially useful for connecting the FPGA directly to bus transceivers, memory, status indicators, and external converters. Designers should select the Spartan-3 family only when its verified logic capacity and I/O resources satisfy the design rather than assuming equivalent capacity from a different FPGA family. Board planning must preserve the CSPBGA footprint, power rails, decoupling network, configuration interface, and exposed thermal behavior. Because the supplied data does not provide the complete 132-ball pin map, engineers should download the applicable Spartan-3 documentation and compare every ball assignment before routing or replacing the component. Legacy availability and tooling compatibility should also be confirmed before a new production design is committed. This page consolidates the verified distributor specifications, package data, temperature range, pricing-status limitations, and documented same-family alternatives. It also adds practical migration guidance, parameter comparisons, and explicit identification of data that remains unavailable, providing engineering context beyond a basic distributor listing while avoiding unsupported assumptions about legacy FPGA pin compatibility.

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XC3S50-5TQG144C - 50K Spartan-3 FPGA | AMD | 144-TQFP
XC3S50-5TQG144C

XC3S50-5TQG144C - 50K Spartan-3 FPGA | AMD | 144-TQFP

The AMD XC3S50-5TQG144C is a Spartan-3 field-programmable gate array with 50,000 system gates, 1,728 logic cells, 97 I/O, a 1.2 V core supply, and a 144-pin TQFP package. Rated at up to 725 MHz, it targets compact programmable-logic designs that require more I/O and processing capacity than small CPLDs can provide. A field-programmable gate array is a semiconductor whose digital logic and interconnect are configured after manufacture. Within the product hierarchy, an FPGA is a programmable logic device and a semiconductor. The Spartan-3 family combines configurable logic blocks, programmable I/O, embedded block RAM, dedicated multipliers, and clock-management resources, allowing one device to implement control logic, data processing, interfaces, and small embedded systems. The XC3S50-5TQG144C combines 50,000 system gates with 1,728 logic cells and 97 available I/O in a 144-lead TQFP package. Its 1.2 V core supply reduces core power requirements, while the -5 speed designation corresponds to the 725 MHz maximum figure reported in the supplied product data. The commercial temperature range shown by the verified listings is 0°C to 85°C. This device is manufactured using 90 nm technology, positioning it as a cost-oriented, low-density FPGA rather than a high-performance FPGA with large on-chip memories. Configuration data programs the logic fabric and I/O standards, allowing hardware revisions and field updates without changing the printed circuit board. Because the package exposes many I/O in a relatively compact surface-mount format, PCB routing and power delivery remain central design constraints. Typical uses include industrial control, consumer electronics, embedded systems, communications interfaces, instrumentation, and general-purpose digital logic. Its 97 I/O make it particularly useful where external memory, parallel buses, status indicators, sensors, or multiple digital interfaces must connect to programmable logic. The 144-pin package also offers more I/O than a small PLD while remaining manageable for multilayer board assembly. Designers should verify the exact pinout, configuration interface, supported I/O standards, bank supply voltages, and decoupling requirements against the Spartan-3 manufacturer documentation before layout release. Because this is a legacy programmable-logic platform, toolchain availability, configuration-device compatibility, and long-term procurement should be confirmed during product planning. This page consolidates the verified distributor specifications, practical design considerations, and carefully qualified same-footprint alternatives for XC3S50-5TQG144C. It also distinguishes documented production options from unavailable or unverified engineering data so engineers can make a defensible sourcing and design decision.

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XC3S50-5VQG100C - 50K Gate Spartan-3 FPGA | AMD
XC3S50-5VQG100C

XC3S50-5VQG100C - 50K Gate Spartan-3 FPGA | AMD

AMD XC3S50-5VQG100C is a Spartan-3 field-programmable gate array with 50,000 system gates, 1,728 logic cells, 63 programmable I/O pins, and a 1.2 V core supply in a 100-pin VTQFP package. It uses 90 nm CMOS technology and is rated for a maximum clock frequency of 725 MHz. A field-programmable gate array, or FPGA, is a semiconductor whose digital logic and I/O can be configured after fabrication. In the device hierarchy, an FPGA is a programmable logic device, followed by the broader categories of semiconductor, integrated circuit, and digital logic. Spartan-3 devices combine configurable logic blocks, distributed memory, dedicated input/output structures, and clocking resources in a single package. The XC3S50-5VQG100C provides 73,728 bits of distributed RAM and 192 logic array blocks, making its internal resources suitable for modest control systems, interface conditioning, signal processing, and embedded logic. Its 63 configurable I/O pins provide external connectivity, while the -5 speed designation corresponds to the verified 725 MHz maximum frequency. The 100-pin VTQFP package supports compact surface-mount PCB layouts. The Spartan-3 architecture uses a 90 nm process and a 1.2 V internal core voltage. Distributed RAM provides storage alongside configurable logic, allowing small lookup tables, buffers, and state machines to be implemented without relying entirely on external memory. Designers must also account for dedicated configuration pins, clock routing, power-supply sequencing, and the fixed resources assigned to configuration when planning the pinout. Typical uses include industrial control logic, low-cost embedded control, data acquisition, communication-interface bridging, instrumentation, and consumer electronics. The component is appropriate when a relatively small amount of parallel logic, moderate I/O connectivity, and programmable functionality are needed without moving to a larger FPGA. The primary design consideration is package and power planning. A 100-pin VTQFP layout is sensitive to thermal via placement and power-distribution integrity, while the 1.2 V core rail requires clean supply delivery. Configuration logic should also be preserved according to the manufacturer's guidance because its pins may not be freely available for ordinary user functions. This page combines the verified distributor specifications, package details, lifecycle caveat, drop-in replacement analysis, and practical design guidance for engineers evaluating the AMD Spartan-3 XC3S50-5VQG100C.

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XC3S5000-4FG676C - 5M Gate Spartan-3 FPGA, 676-BGA | Xilinx
XC3S5000-4FG676C

XC3S5000-4FG676C - 5M Gate Spartan-3 FPGA, 676-BGA | Xilinx

The Xilinx XC3S5000-4FG676C is a 5-million system-gate Spartan-3 field-programmable gate array (FPGA) packaged in a 676-ball fine-pitch ball grid array, delivering 74,880 logic cells, 1,728 Kbits of block RAM, 104 dedicated 18x18 multipliers, 4 digital clock managers and up to 489 user I/O pins. A field-programmable gate array is a reconfigurable digital semiconductor: an FPGA contains an array of programmable logic blocks, block RAM, dedicated multipliers and programmable I/O, so a design is implemented by writing a bitstream into on-chip configuration memory rather than fabricating a custom ASIC mask set. In the device hierarchy, an FPGA sits above a programmable logic device (PLD) and a fixed-function logic IC, and below an ASIC, inside the broader category of programmable logic semiconductors. Key features of this device include a -4 speed grade for higher performance timing, a commercial temperature option indicated by the C suffix, 676 ball-grid-array package balls providing 489 available user I/O in the FGG676 variant, 4 DCMs for clock generation, de-skew and jitter removal, and 104 18x18 signed multipliers for DSP-style multiply-accumulate work without external DSP chips. The device belongs to the Spartan-3 cost-optimized family, which was designed for high-volume consumer and industrial electronics. Technically, the XC3S5000-4FG676C couples configurable logic slices with dedicated arithmetic and memory resources so that filter, correlation, protocol and control functions can be consolidated in one device. The DCMs generate four-phase and divided clocks on-chip, which reduces external clock-tree components and simplifies timing closure in designs with multiple clock domains. Configuration is loaded from an external non-volatile memory or a processor bus through the standard serial or parallel configuration ports. Typical applications include industrial control and factory automation, video and image processing, network packet handling, instrumentation and test equipment, embedded consumer products, and digital signal conditioning in communication equipment. The large logic-cell count and 489 available user I/Os suit designs that need parallel parallel-bus interfaces, multiple data converters, or wide video capture and processing paths. One design consideration is that the 676-ball FBGA is a fine-pitch, lead-free-intensive package that requires careful PCB layout with solid ground and power planes, controlled-length configuration traces and Xilinx-recommended decoupling. Design for the -4 speed grade timing constraints, and verify that the target board uses the same 676-ball footprint and ball map if you intend to migrate between the FG, FGG, I and C suffix variants. This page consolidates device specifications, drop-in package-compatible alternatives, a parameter-by-parameter comparison and practical layout and configuration guidance into a single engineering reference for engineers evaluating the Spartan-3 XC3S5000 in production designs.

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XC3S5000-4FG676I - 5M-Gate Spartan-3 FPGA | Xilinx
XC3S5000-4FG676I

XC3S5000-4FG676I - 5M-Gate Spartan-3 FPGA | Xilinx

The Xilinx XC3S5000-4FG676I is a Spartan-3 field-programmable gate array with 5 million system gates, 74,880 logic cells, up to 489 I/O, and a 630 MHz maximum clock in a 676-pin FBGA package. The -4 speed grade targets demanding FPGA designs, while the industrial-temperature I suffix supports junction temperatures from -40°C to 100°C. Manufactured using 90 nm SRAM FPGA technology, the device combines configurable logic, dedicated hardware resources, programmable I/O, and embedded block RAM in one package. A field-programmable gate array is a semiconductor whose digital logic is configured after manufacture. An FPGA belongs to the programmable-logic hierarchy: FPGA → field-programmable gate array → programmable logic device → semiconductor. Instead of implementing a fixed function with hardwired gates, the Spartan-3 architecture combines configurable logic blocks with programmable interconnect. This makes the device suitable for parallel processing, protocol bridging, control logic, signal acquisition, and embedded systems whose algorithms may evolve after design release. The XC3S5000-4FG676I provides 5 million system gates and 74,880 logic cells, with up to 489 I/O available through the 676-ball package. Its 630 MHz maximum clock supports demanding timing designs, while the 90 nm fabrication process and 1.2 V supply characterize this generation of programmable logic. The broad I/O count allows systems to connect substantial external memory, data converters, communications transceivers, and industrial interfaces without an external interface controller. Spartan-3 devices use configurable logic blocks, programmable routing resources, dedicated multipliers, block RAM, digital clock management, and programmable I/O blocks. The -4 designation identifies the performance grade, FG676 identifies the package configuration, and I identifies the industrial temperature option. Exact pin functions, differential-I/O capabilities, supported standards, and configuration requirements must be checked against the device pinout and the AMD/Xilinx DS099 family documentation before layout or firmware implementation. Typical applications include industrial control, telecommunications line-card and interface logic, high-speed data acquisition, digital signal processing, embedded video processing, storage controllers, and test-and-measurement equipment. The large logic capacity allows parallel datapaths and multi-channel processing, while the high I/O count supports memory-heavy and multi-interface designs. The 630 MHz ceiling provides substantial timing headroom for clocked pipelines, provided timing constraints, clocking, and physical implementation meet the design targets. A critical design consideration is that FPGA migration depends on exact package balls, configuration pins, supply sequencing, bank voltages, and supported I/O standards. A device with the same gate count is not automatically interchangeable unless its package ballout and electrical constraints are verified. Use the AMD/Xilinx DS099 Spartan-3 FPGA Family data sheet for the authoritative pin and parameter definitions, and validate the selected board configuration with the final bitstream and timing analysis. This product page consolidates the verified device identity, core resource figures, package information, design constraints, application guidance, and a validated same-package alternative candidate. It also distinguishes documented parameters from attributes that still require device-specific review, helping engineers identify whether the XC3S5000-4FG676I fits a legacy design before committing to sourcing or board rework.

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XC3S5000-5FG676C - 5M Gate Spartan-3 FPGA | AMD/Xilinx
XC3S5000-5FG676C

XC3S5000-5FG676C - 5M Gate Spartan-3 FPGA | AMD/Xilinx

The AMD/Xilinx XC3S5000-5FG676C is a Spartan-3 field-programmable gate array with 5 million system gates, 74,880 logic cells, and a maximum stated operating frequency of 725 MHz. The device uses 90 nm process technology, operates from a 1.2 V core supply, and is packaged in a 676-pin fine-pitch ball grid array. The commercial-grade C suffix corresponds to an operating-temperature range of 0°C to 85°C according to the published product information. A field-programmable gate array, or FPGA, is a programmable semiconductor containing configurable logic blocks, programmable interconnect, input/output resources, and embedded memory. FPGAs belong to the programmable-logic hierarchy, combining digital design flexibility with high-density parallel processing. The Spartan-3 family targets cost-sensitive embedded systems where designers require substantial logic capacity, multiple I/O, and field-updatable configurations without changing the assembled PCB. The XC3S5000-5FG676C provides 74,880 logic cells, 5 million system gates, and a 725 MHz stated maximum frequency. Its 676-ball package supports a high pin count compared with smaller FPGA packages, making it suitable for designs requiring extensive parallel interfaces. The 90 nm fabrication process and 1.2 V core supply are important for system planning because power dissipation, configuration requirements, and external I/O voltage levels must be evaluated as a complete power architecture. Its programmable logic can implement control logic, serial and parallel interfaces, protocol bridges, state machines, signal conditioning, and embedded datapaths. Designs can combine multiple fixed-function functions in one device, reducing component count and allowing configuration changes during product maintenance. Because an FPGA is programmed after fabrication, its internal architecture supports field updates, debugging, and product differentiation without physically replacing the IC. Typical uses include industrial automation, communications equipment, test and measurement systems, embedded control, video processing, and high-density interface aggregation. The large 676-ball package is especially relevant when a design requires many I/O sites or a substantial connector count. A smaller Spartan-3 device may be preferable when the system does not require the XC3S5000's 74,880 logic cells or high pin count. When designing a board around this FPGA, use the manufacturer datasheet and package documentation to verify every ball assignment, configuration interface, power rail, decoupling requirement, and I/O standard. The 1.2 V core supply and 725 MHz frequency figure describe the device itself, but actual clocking, performance, and power depend on the selected I/O standards, logic utilization, speed grade, configuration method, PCB construction, and thermal design. This page combines the published XC3S5000-5FG676C specifications, sourcing information, application guidance, and verified same-family alternatives into an engineering-focused reference for FPGA designers and component selectors.

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XC3S500E-4PQ208I - Spartan-3E FPGA 208-BFQFP | AMD
XC3S500E-4PQ208I

XC3S500E-4PQ208I - Spartan-3E FPGA 208-BFQFP | AMD

The AMD XC3S500E-4PQ208I is a Spartan-3E field-programmable gate array in a 208-BFQFP package. It provides 500,000 system gates, 10,476 configurable logic cells, 158 user I/O, and a 4 speed grade. The industrial-temperature suffix I supports operation from 0°C to 85°C. These characteristics make the device suitable for cost-sensitive embedded control, communications, industrial automation, and consumer-equipment designs requiring programmable logic and substantial parallel I/O. A field-programmable gate array is a semiconductor whose digital logic and connectivity are configured after manufacture. Within the product hierarchy, an FPGA is a programmable logic device and a semiconductor. The Spartan-3E family combines configurable logic blocks, programmable I/O, block RAM, dedicated arithmetic resources, and clock-management functions on one device. This integration allows a board to implement control logic, protocol handling, data acquisition, and peripheral interfaces without relying on a collection of discrete logic ICs. The XC3S500E-4PQ208I includes 10,476 configurable logic cells and 158 user I/O, providing high connectivity for parallel buses, industrial interfaces, and embedded processor peripherals. Its 4 speed grade is intended for designs operating below the 5 speed-grade ceiling. The 208-pin surface-mount package supports higher I/O density than the smaller 100-pin and 132-pin alternatives in the same family, while the 28 mm by 28 mm footprint requires careful PCB routing and thermal analysis. Spartan-3E devices use configurable logic blocks and distributed or block memory resources to implement digital systems whose requirements may evolve after hardware design begins. The XC3S500E family also supports dedicated multipliers, block RAM, and clock functions for designs requiring arithmetic, local storage, or multiple clock domains. Configuration, pin constraints, timing, and power behavior should be evaluated with the current AMD FPGA design tools before schematic sign-off. Typical applications include industrial automation controllers, telecommunications line-card logic, data-acquisition systems, embedded control platforms, and instrumentation. In these systems, the high I/O count can connect external memories, transceivers, sensors, and parallel processors, while programmable logic allows firmware-independent field updates. Designers should confirm timing closure for the intended clock frequency and verify that the selected I/O standards suit each interface. PCB implementation requires a stable multilayer structure, continuous ground-plane coverage, and careful decoupling around every supply pin. The 208-BFQFP lead pitch requires a qualified assembly process, and exposed programming and configuration signals must be routed away from high-speed nodes. A finished design should also include a defined startup or configuration strategy so the FPGA operates deterministically after power application. This page combines package, logic-resource, temperature, and application guidance with practical drop-in replacement analysis. It also organizes pin, procurement, and selection questions around the device's industrial Spartan-3E positioning, helping engineers compare footprint compatibility, temperature grade, speed grade, and lifecycle needs before releasing a PCB.

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XC3S500E-4PQG208C - 500K Gate Spartan-3E FPGA | AMD
XC3S500E-4PQG208C

XC3S500E-4PQG208C - 500K Gate Spartan-3E FPGA | AMD

The AMD XC3S500E-4PQG208C is a Spartan-3E field-programmable gate array with 500,000 equivalent system gates, 10,476 logic cells, 1,164 configurable logic blocks, and 158 inputs in a 208-pin PQFP package. The device uses a 1.2 V supply and is identified by the provided data as supporting up to 572 MHz. It is a surface-mount programmable logic device for embedded control, signal processing, interface bridging, and parallel data acquisition systems. A field-programmable gate array, or FPGA, is a programmable digital logic device whose configurable logic and interconnect resources can be programmed after manufacture. FPGAs sit above fixed-function logic devices and programmable gate arrays in the digital-semiconductor hierarchy: a design can use programmable logic to implement counters, state machines, ALUs, control logic, and interface circuits without requiring a custom ASIC. Spartan-3E devices provide a practical balance between logic capacity, device cost, and design flexibility for embedded systems. The verified specifications identify the XC3S500E-4PQG208C as a 500K-gate Spartan-3E FPGA with 10,476 logic cells, 1,164 CLBs, 158 inputs, and a maximum clock frequency of 572 MHz. The 208-PQFP package provides a leaded, inspectable footprint for conventional surface-mount assembly. The C suffix and the verified distributor listings identify the exact commercial ordering code; the supplied sources do not provide a complete temperature-grade or lifecycle classification. This FPGA is suitable for control and sequencing logic where multiple parallel channels, counters, timers, and state machines must be implemented in one device. Its logic capacity can also support moderate data paths and protocol interfaces. The 572 MHz maximum clock figure should be treated as a device-level headline value; actual achievable clock rates depend on the selected I/O standard, timing constraints, routing, logic depth, and the external memory or transceiver interface. Typical applications include industrial automation, test-and-measurement front ends, communications adapters, embedded control systems, and signal-processing support. The package is particularly useful where a leaded package is preferred over a fine-pitch BGA and where the design requires a moderate number of I/O connections. Designers should verify board pinout, configuration requirements, power sequencing, I/O standards, and signal-integrity margins against the manufacturer datasheet before layout release. The principal design consideration is package-related routing and signal integrity. A 208-pin PQFP requires adequate copper clearances and controlled escape routing, especially for high-speed clock and interface nets. Configuration storage, bank supply voltages, decoupling, and pinout details must be implemented exactly as specified in the AMD Spartan-3E documentation. This page combines verified distributor and AMD documentation references with application guidance, lifecycle caveats, package-specific design notes, and explicitly qualified replacement analysis for engineers evaluating the XC3S500E-4PQG208C.

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XC3S50A-4FT256C - 50K Spartan-3A FPGA | AMD | 256-FTBGA
XC3S50A-4FT256C

XC3S50A-4FT256C - 50K Spartan-3A FPGA | AMD | 256-FTBGA

AMD XC3S50A-4FT256C is a Spartan-3A field-programmable gate array with approximately 50,000 logic gates, 144 user I/O, and a 256-pin fine-pitch ball grid array package. The device operates from a 1.14 V to 1.26 V core-voltage range and is identified as a last-time-buy product. Its 4 speed grade supports cost-sensitive programmable logic applications where a compact, nonvolatile FPGA implementation is preferable to a fixed-function logic device. A field-programmable gate array is a semiconductor whose digital logic, interconnect, and input/output functions are configured after manufacture. Within the FPGA hierarchy, the Spartan-3A family belongs to the low-to-medium-density programmable-logic segment. The XC3S50A combines approximately 50,000 gates, 144 I/O, and a 256-ball FTBGA package in a surface-mount device suitable for compact embedded control, interface, data-capture, and industrial automation equipment. The available specifications identify 144 user I/O, a 1.14 V to 1.26 V core-voltage range, and an approximate gate count of 50,000. These resources support parallel control logic, protocol interfaces, glue logic, and modest embedded processing systems. The C suffix identifies the commercial product variant, while the -4 portion denotes the device speed grade. Detailed RAM, clock, configuration, and I/O standards were not present in the supplied verified data and must be confirmed from the AMD Spartan-3A family datasheet before design release. The XC3S50A-4FT256C is supplied in tray packaging according to the available product listing. Its 256-pin fine-pitch BGA format creates a compact land pattern but requires careful PCB layout, via-in-pad or via-under-bump considerations, and assembly processes capable of handling closely spaced balls. Signal-integrity, power-delivery, thermal, and exact package-dimension guidance should be taken directly from the AMD DS529 family document and the device pinout information. Typical uses include industrial automation controllers, instrumentation, embedded communications, consumer interfaces, and cost-sensitive control systems. Because the part is listed as last time buy, new production should include lifecycle review, planned end-of-life inventory, and a qualified second source. Lead time is listed as 12 weeks, making procurement planning essential for designs that cannot tolerate a supply interruption. Design engineers should verify the exact pinout, supported I/O standards, configuration interface, memory resources, and power requirements in the AMD Spartan-3A family datasheet before layout release. This page consolidates the supplied distributor data, lifecycle information, pricing references, drop-in family variants, and practical implementation considerations to support engineering selection.

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XC3S50A-4FT256I - Spartan-3A 256-LBGA FPGA | AMD
XC3S50A-4FT256I

XC3S50A-4FT256I - Spartan-3A 256-LBGA FPGA | AMD

The AMD XC3S50A-4FT256I is a Spartan-3A field-programmable gate array in a 256-ball, square, surface-mount LBGA package. The -4 suffix identifies the device speed grade, the FT code identifies the 256-ball package configuration, and the final I indicates industrial-temperature grading. Verified distributor information identifies the device as an FPGA with 144 I/O, 55,296 gates, and 1,584 logic cells. It is positioned for designs that require programmable digital logic, parallel interfaces, embedded control, and compact system integration. A field-programmable gate array is a semiconductor whose digital configuration is defined after fabrication. The FPGA category sits above programmable logic devices and below configurable digital system components, combining configurable logic blocks, programmable I/O, and dedicated resources in one integrated circuit. This hierarchy allows engineers to implement control, communications, data acquisition, signal processing, and interface logic on hardware that can be revised without changing the printed circuit board. The Spartan-3A family provides configurable logic blocks containing lookup tables and flip-flops, along with programmable general-purpose I/O and dedicated multiplier and accumulator resources in DSP48A slices. Those DSP48A resources are useful for multiply-accumulate operations, while the 144-I/O configuration supports systems with substantial external bus and control connectivity. The exact switching, timing, configuration-memory, and electrical limits must be confirmed in the AMD DS529 Spartan-3A family data sheet before a design is released. The XC3S50A-4FT256I is differentiated by its combination of the -4 performance grade, industrial-temperature grading, and 256-ball LBGA package. The industrial marking makes it more appropriate for temperature-controlled factory, telecom, and test equipment than a commercial-temperature alternative. The compact 17 x 17 mm package also supports dense board layouts, although its 256-ball geometry requires careful inspection and assembly planning. Typical applications include industrial automation, telecommunications, embedded instrumentation, data-acquisition systems, and compact control platforms. In these systems, the FPGA can consolidate parallel interface logic, perform protocol conversion, coordinate control sequencing, or implement DSP pipelines. Pairing it with an external data converter, communications transceiver, and nonvolatile configuration storage can produce a complete embedded processing subsystem. Designers should treat the 256-LBGA footprint as a demanding assembly constraint. The board should use an appropriate ball pitch and copper-compatible surface finish, while assembly planning must account for inspection, cleaning, placement, and solder-joint verification. Power rails, configuration sequencing, decoupling, clocking, and I/O standards should be designed from the complete AMD datasheet rather than inferred solely from the ordering code. This page combines verified distributor specifications, package data, and the AMD DS529 family reference with practical considerations that are not visible in a basic distributor listing. It also separates documented facts from parameters that still require schematic-level and board-level verification, helping engineers evaluate the XC3S50A-4FT256I for industrial FPGA designs without relying on assumptions.

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XC3S50A-4FTG256C - 50K Spartan-3A FPGA | AMD
XC3S50A-4FTG256C

XC3S50A-4FTG256C - 50K Spartan-3A FPGA | AMD

The AMD XC3S50A-4FTG256C is a Spartan-3A field-programmable gate array with 50K logic gates, 55,296 logic cells, 1,584 configurable slices, and 144 user I/O in a 256-ball FTBGA package. It is manufactured on 90 nm CMOS technology, operates from a 1.2 V core supply, and is specified at a nominal 667 MHz performance point. The -4 designation identifies its speed grade, while the final C suffix identifies the commercial temperature grade. A field-programmable gate array is a semiconductor whose digital logic, interconnect, and I/O functions are configured after fabrication. An FPGA belongs to the programmable-logic device hierarchy, alongside CPLDs, and provides parallel hardware implementation of control, signal-processing, communications, and data-acquisition functions. The Spartan-3A family combines moderate logic density with a large I/O count in a cost-conscious architecture for embedded control and industrial equipment. The XC3S50A-4FTG256C provides 144 user I/O, giving it substantial connectivity for parallel buses, control signals, and external interfaces. Its 1,584 slices divide the 55,296 logic cells into parallel programmable resources for combinational and sequential logic. The 50K-gate description provides a relative scale for system architects, while the 667 MHz figure establishes the device's timing-performance class for clocked designs. The 256-ball FTBGA package supports compact PCB integration but requires careful escape routing, via-in-pad considerations, and thermal design. A 90 nm fabrication process and 1.2 V core supply place this device in an established low-power FPGA generation. Designers should use the AMD DS529 family data sheet for package dimensions, pin definitions, configuration requirements, bank voltage rules, and supported I/O standards. Typical uses include industrial control systems, instrument interfaces, digital signal-processing front ends, communications equipment, and embedded test systems. Its combination of 144 I/O and 1,584 slices is useful when an application needs many parallel external connections or moderate logic parallelism rather than the density of a larger FPGA. Configuration storage, clocking, power sequencing, and JTAG programming remain essential board-level functions. When replacing another device, verify the exact BGA ball map, power rails, configuration interface, I/O voltage standards, and speed grade rather than relying only on the logic-cell count. The C-grade suffix and -4 speed designation affect system timing and environmental requirements. Use the manufacturer's package pinout and configuration guidance to validate every board-level connection before production release. This product record combines the verified Spartan-3A device characteristics with package-aware replacement guidance, commercial sourcing instructions, and practical design notes for 256-ball FTBGA implementation. It is intended to accelerate initial component screening while preserving the verification work required for production-quality FPGA designs.

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XC3S50A-4TQ144C - 50K Spartan-3A FPGA | AMD/Xilinx
XC3S50A-4TQ144C

XC3S50A-4TQ144C - 50K Spartan-3A FPGA | AMD/Xilinx

The AMD/Xilinx XC3S50A-4TQ144C is a Spartan-3A field-programmable gate array with 55,296 system gates, 1,584 logic elements, 108 user I/Os, and a 144-pin TQFP package. Designed for high-volume, cost-sensitive commercial applications, the device uses a 90 nm process technology and a 1.2 V core. The “-4” grade identifies its performance speed grade, while the “C” suffix denotes the commercial temperature option. A field-programmable gate array, or FPGA, is a semiconductor whose digital logic, interconnect, and I/O resources are configured after manufacture. An FPGA sits within the programmable-logic hierarchy above simple fixed logic devices and below software-configured processors. Unlike a mask-programmable ASIC, an FPGA allows design revisions, field updates, and logic changes without fabricating a new custom chip. The XC3S50A-4TQ144C combines a moderate logic capacity with 108 user I/Os in a surface-mount TQFP package. The primary headline features are 55,296 system gates, 1,584 logic elements, and 108 user I/Os. Search results also describe the device as a 50,000-system-gate Spartan-3A FPGA. Its 144-pin TQFP package provides 108 user I/Os for external interfaces and board-level connections, making this device suitable for compact embedded systems requiring substantial parallel connectivity. The Spartan-3A architecture combines configurable logic, programmable I/O, dedicated memory resources, and clock-management resources within a single programmable device. The 90 nm fabrication process supports a compact and cost-sensitive implementation compared with larger, more complex programmable-logic devices. The device’s combination of moderate gate capacity and high I/O availability allows designers to consolidate control, interface, and state-machine functions without using a discrete combination of multiple smaller devices. Typical applications include industrial control, instrumentation, communications equipment, consumer peripherals, embedded control, and general-purpose I/O expansion. The 108 user I/Os are especially useful for systems that need parallel data acquisition, digital control, display interfaces, or external memory connections. In these designs, the FPGA can implement parallel processing and control logic while its configuration system preserves update flexibility. A primary design consideration is supply voltage and I/O compatibility. The available source material specifies a 1.2 V core but does not provide the complete recommended operating ranges, I/O standard options, configuration memory requirements, or power-loss configuration behavior. These values must therefore be confirmed against the complete manufacturer datasheet before schematic capture, pin assignment, and PCB layout are released. This product data consolidates verified distributor specifications, package information, pricing, availability, and same-family replacement options with practical selection guidance. It adds value beyond a basic distributor listing by separating confirmed parameters from missing technical data and explaining where each Spartan-3A option is appropriate.

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XC3S50A-4TQ144I - 50K Spartan-3A FPGA | AMD/Xilinx
XC3S50A-4TQ144I

XC3S50A-4TQ144I - 50K Spartan-3A FPGA | AMD/Xilinx

The AMD/Xilinx XC3S50A-4TQ144I is a Spartan-3A field-programmable gate array with 50,000 system gates, 1,584 configurable logic cells, 55,296 RAM bits, and 108 I/O in a 144-LQFP package. It operates from a 1.14 V to 1.26 V core supply and is specified for an industrial junction-temperature range of -40°C to 100°C. The -4 suffix identifies the device speed grade, while the TQ144 package designation identifies the surface-mount 144-lead package used by the XC3S50A family. A field-programmable gate array, or FPGA, is a semiconductor whose digital logic, interconnect, and I/O behavior can be programmed after manufacture. Within the product hierarchy, an FPGA is a programmable logic device and ultimately a semiconductor. Compared with a fixed-function application-specific integrated circuit, an FPGA allows parallel hardware functions, interface adaptation, and design revisions without changing the PCB. The Spartan-3A family is positioned for compact, cost-sensitive designs requiring moderate logic density and extensive user I/O. The Spartan-3A architecture provides five principal programmable functional elements, including configurable logic blocks, programmable interconnect, dedicated block RAM, input/output blocks, and configuration resources. Each configurable logic block contains four-input lookup tables and flip-flop resources for implementing combinational and sequential logic. The available 1,584 logic cells and 55,296 RAM bits support control logic, bus arbitration, low-speed communication interfaces, instrumentation, and general-purpose digital processing. With 108 I/O, the XC3S50A-4TQ144I offers more interface capacity than the smallest devices in the Spartan-3A family. The 144-LQFP package exposes those I/O along with configuration and power pins on a conventional surface-mount footprint. The 50,000-gate rating describes the family’s system-gate scale rather than a guaranteed clock rate, while the -4 speed designation and the manufacturer’s timing specifications determine actual performance. Configuration and pinout details should be verified against the DS529 family datasheet before PCB release. Typical applications include industrial control, telecommunications equipment, consumer electronics, embedded instrumentation, interface bridging, and low-density signal-processing systems. In each case, the combination of 1,584 logic cells, 55,296 RAM bits, 108 I/O, and a compact 144-lead package allows logic and interface functions to be consolidated without adopting a larger FPGA or a separate microcontroller for basic control tasks. Designers should preserve the required core-supply decoupling, use the manufacturer-recommended configuration interface, and confirm every signal’s I/O standard, drive strength, slew rate, and termination requirements against the DS529 datasheet. Programming tools, bitstream compatibility, and end-of-life considerations should also be reviewed because FPGA toolchains and family support evolve over time. This page consolidates verified distributor availability, package and resource details, drop-in replacement analysis, and practical design guidance into a compact engineering reference. It distinguishes documented device facts from parameters that still require manufacturer-data or board-level confirmation.

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XC3S50A-4TQG144C - Spartan-3A FPGA, 108 I/O | AMD
XC3S50A-4TQG144C

XC3S50A-4TQG144C - Spartan-3A FPGA, 108 I/O | AMD

The AMD XC3S50A-4TQG144C is a Spartan-3A field-programmable gate array with 15,840 logic cells, 108 user I/O, 1,584 internal configuration bits, and a 144-pin LQFP package. Its -4 speed designation supports operation up to 250 MHz, while 6.8 kB of block RAM provides dedicated on-chip storage for counters, packet buffers, and small data pipelines. The device is manufactured in a 1.2 V FPGA technology and targets compact embedded control, communications, instrumentation, and industrial logic systems. A field-programmable gate array is a semiconductor whose digital logic, interconnect, and input/output behavior are configured after manufacture. An FPGA belongs to the programmable-logic hierarchy, alongside CPLDs, but provides substantially more configurable logic and routing resources. This makes it suitable for parallel data acquisition, protocol conversion, control sequencing, embedded signal processing, and other designs that benefit from hardware concurrency. Configuration data determines the implemented circuit, allowing design revisions without changing the PCB. The Spartan-3A architecture combines programmable logic blocks, dedicated block RAM, digital clock management resources, and selectable I/O standards in a single device. The 108 I/O positions give a board designer substantial connectivity in a 144-lead surface-mount package. The 250 MHz headline operating figure should not be interpreted as a guaranteed logic-clock rate for every arbitrary design; actual timing depends on the selected clocking resources, routing path, I/O standard, speed grade, and board conditions. The -4 suffix identifies the device speed grade, while the TQG144C portion identifies the 144-pin package and device-grade ordering information. This ordering code must be checked against the PCB footprint, temperature grade, and production requirements rather than treated as interchangeable with every XC3S50A suffix. The Spartan-3A family is an established programmable-logic platform, and the official DS529 family data sheet remains the primary document for configuration requirements, pin descriptions, electrical characteristics, and package drawings. Typical uses include industrial control and data acquisition, serial-interface bridging, embedded communications gateways, low-cost test equipment, and compact embedded processing systems. A microcontroller can handle supervisory control while the FPGA performs deterministic sampling, protocol conversion, or parallel computations in parallel with the processor. Such partitioning reduces pressure on a general-purpose CPU and can simplify timing-sensitive implementations. Board design should follow the AMD package pinout and configuration guidance exactly. Confirm that the LQFP-144 footprint, power rails, decoupling, configuration interface, and JTAG connections match the selected board revision. Because the Spartan-3A is a mature architecture, also verify software-tool support, bitstream compatibility, and the availability of any required configuration memory before committing the design to production. This product record combines the exact XC3S50A-4TQG144C identifiers with the AMD family data sheet and same-package replacement analysis. It also highlights practical configuration, layout, timing, and thermal checks that engineers can apply when qualifying an FPGA design for low-cost, compact, or industrial equipment.

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XC3S50A-4TQG144I - 50K Spartan-3A FPGA | AMD Xilinx
XC3S50A-4TQG144I

XC3S50A-4TQG144I - 50K Spartan-3A FPGA | AMD Xilinx

AMD Xilinx XC3S50A-4TQG144I is a Spartan-3A field-programmable gate array with 50,000 system gates, 1,584 configurable logic cells, 55,296 RAM bits, and 108 user I/O in a 144-LQFP package. The device operates from a 1.14 V to 1.26 V core supply and is implemented using 90 nm CMOS technology, with a stated maximum clock frequency of 667 MHz. A field-programmable gate array, or FPGA, is a semiconductor whose digital logic, interconnect, and I/O behavior are configured after manufacture. The XC3S50A belongs to the Spartan-3A hierarchy of low-cost FPGAs, combining programmable logic with block RAM and a high pin count. This makes it a practical platform for embedded control, protocol conversion, signal conditioning, and data acquisition where a fixed application-specific integrated circuit would be too specialized. The principal device characteristics include 1,584 logic cells organized into 176 logic array blocks, 55,296 bits of block RAM, and 108 user I/O. Its -4 speed designation corresponds to the stated 667 MHz performance level, while the industrial I suffix identifies the extended-temperature grade. The -40 °C to 100 °C junction-temperature range supports industrial and otherwise temperature-demanding equipment, provided the board-level thermal design keeps the junction within its rated limit. Spartan-3A devices combine programmable logic fabric, configurable I/O blocks, dedicated block RAM, and internal clocking resources on one die. The 1.2 V core architecture reduces supply requirements while leaving the I/O structure capable of supporting external system connections. Design timing, however, depends on the selected clock region, logic depth, routing congestion, I/O standards, and external timing budget, so the 667 MHz figure should not be interpreted as a guaranteed operating frequency for every design. Typical uses include industrial automation modules with sensors and actuators, telecommunications interface equipment, embedded display and control systems, and low-cost data-acquisition products. The 108 available user I/O are particularly useful when the design must bridge multiple buses, capture parallel signals, or provide discrete control outputs while keeping the logic in reprogrammable hardware. The principal design consideration is the 144-LQFP footprint. Place all decoupling capacitors close to the supply pins, preserve the manufacturer-defined VCC and ground connections, and assign I/O standards only through supported pins. Use the AMD Spartan-3A family data sheet for the complete pin table, configuration requirements, and board-level power sequencing before fabrication. This page combines device specifications, application guidance, engineering design notes, and a focused replacement comparison to help engineers evaluate the XC3S50A-4TQG144I beyond a basic distributor parameter listing.

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XC3S50A-4VQ100C - 50K Spartan-3A FPGA | AMD | 100-TQFP
XC3S50A-4VQ100C

XC3S50A-4VQ100C - 50K Spartan-3A FPGA | AMD | 100-TQFP

AMD XC3S50A-4VQ100C is a Spartan-3A field-programmable gate array (FPGA) providing 1,584 logic cells, 55,296 RAM bits, 68 user I/Os, and approximately 50,000 logic gates in a 100-pin TQFP package. The device operates from a 1.14 V to 1.26 V core supply, uses 90 nm FPGA technology, and is implemented on a 0.667 GHz performance grade. A field-programmable gate array is a semiconductor device whose digital logic, memory, and I/O behavior are defined by a programmable configuration bitstream. An FPGA belongs to the programmable-logic hierarchy, alongside CPLDs, and provides reconfigurable parallel logic for cost-sensitive, I/O-intensive electronic products. Unlike a fixed-function application-specific integrated circuit, an FPGA can be reprogrammed during development or, where configuration technology permits, after deployment. The Spartan-3A family targets high-volume designs requiring moderate logic density. This device includes 176 configurable logic blocks, 68 user I/Os, and 55,296 bits of block RAM. Supported configuration approaches include Master Serial mode using platform flash PROM, Master SPI mode using commodity serial flash, BPI mode using commodity parallel flash, Slave Parallel mode using SelectMAP or a processor, and Slave Serial mode. These interfaces allow the configuration source and board-level design to be selected according to cost, density, and update requirements. The XC3S50A-4VQ100C is identified as a -4 speed-grade device with 667 MHz performance, a 1.2 V core, and a commercial operating-temperature range of 0°C to 85°C junction temperature. Its 100-terminal surface-mount package provides 68 user I/O positions according to the verified distributor data. Configuration data is retained externally in a PROM or flash device, so the FPGA's implemented logic is not fixed at manufacture. Typical uses include industrial control interfaces, communication adapters, instrumentation, test equipment, embedded control, and general-purpose programmable logic. Its 68 I/Os make it appropriate for parallel data acquisition, control, bridging, and interface-conversion designs where a small pin count, legacy 90 nm economics, and reconfigurability are more important than the density offered by newer FPGA families. The primary design consideration is that configuration storage, programming, clocking, decoupling, and I/O voltage compatibility must be planned before schematic capture. Designers should use the AMD Spartan-3A family data sheet for the exact package pinout and device-specific constraints, and should verify the selected configuration PROM against the supported bitstream and interface requirements. This page consolidates the verified AMD and distributor specifications, exact package and resource information, commercially sourced alternatives, and practical replacement-selection guidance. It is intended to help engineers identify whether the XC3S50A-4VQ100C remains appropriate for an existing Spartan-3A design without overlooking temperature-grade or speed-grade differences.

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XC3S50A-4VQ100I - 50K Spartan-3A FPGA | AMD | Industrial
XC3S50A-4VQ100I

XC3S50A-4VQ100I - 50K Spartan-3A FPGA | AMD | Industrial

AMD XC3S50A-4VQ100I is a Spartan-3A field-programmable gate array with 50,000 system gates, 1,584 logic cells, 68 user I/Os, and a maximum stated performance of 667 MHz, supplied in a 100-pin TQFP package. The device operates from a 1.2 V core supply and is specified for industrial-temperature use from -40°C to +100°C. A Spartan-3A FPGA is a programmable logic device within the broader semiconductor and FPGA hierarchy. Unlike a fixed-function application-specific integrated circuit, it combines configurable logic, programmable interconnect, memory resources, and general-purpose I/O. Its 100-pin TQFP package makes it suitable for designs requiring moderate logic density and external peripheral connectivity without using a large ball-grid-array package. The XC3S50A-4VQ100I provides 1,584 logic cells and 68 I/Os, allowing designers to implement control logic, interface protocols, data acquisition, or embedded state machines in one programmable device. The -4 speed designation identifies its performance grade, while the I suffix identifies the industrial-temperature option reported in the verified product data. The 90 nm fabrication process and 1.2 V core supply are consistent with the Spartan-3A generation. Its architecture supports configuration from several serial and parallel memory interfaces, including Master Serial, Master SPI, BPI, Slave Parallel, SelectMAP, and Slave Serial modes. Configuration storage can therefore use commodity serial flash, parallel flash, or platform flash, depending on board-level requirements. The exact configuration file size, supported I/O standards, and recommended termination network are not included in the supplied source snippets. Typical uses include industrial automation, communications equipment, test and measurement systems, embedded control, and I/O-intensive consumer or industrial products. The 68 available I/Os support external sensors, displays, memory devices, and communications transceivers, while the 50K-gate device size is appropriate for moderate parallel logic rather than high-throughput processor applications. Design planning should include correct configuration-pin connections, suitable bypass capacitors, and a verified JTAG programming chain. The 100-TQFP footprint also requires careful escape routing for fine-pitch leads and adequate board area for power distribution. Because a detailed pin map and current pricing were not present in the supplied data, the package pinout is intentionally left unavailable and the commercial tiers require a current quotation. This product record consolidates verified distributor specifications, same-family drop-in candidates, application guidance, and practical FPGA design considerations. It is intended to help engineers assess package compatibility, configuration strategy, thermal requirements, and procurement without substituting unsupported electrical or lifecycle assumptions.

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XC56309VF100A - 24-bit 100MHz DSP 196-MAPBGA | NXP Semiconductors
XC56309VF100A

XC56309VF100A - 24-bit 100MHz DSP 196-MAPBGA | NXP Semiconductors

The NXP Semiconductors XC56309VF100A is a 24-bit fixed-point Digital Signal Processor (DSP) operating at a 100 MHz clock rate (100 MIPS), housed in a 196-pin MAPBGA (15x15 mm) surface-mount package. It belongs to the DSP563xx family, integrating 24 kB of on-chip RAM and 576 B of non-volatile memory, with Host Interface, SSI, and SCI peripherals for flexible system integration. What is a fixed-point DSP? A Digital Signal Processor (DSP) is a specialized microprocessor optimized for numeric-intensive signal processing tasks such as filtering, modulation, audio/video codecs, and telecommunications. Fixed-point DSPs represent data as integers, trading dynamic range for lower cost, lower power, and deterministic real-time latency compared to floating-point DSPs and general-purpose microcontrollers. They sit within the broader taxonomy: DSP -> processor -> microcontroller/ASIC family -> integrated circuit -> semiconductor. Key features of the XC56309VF100A include a 100 MHz core delivering 100 MIPS, 24-bit data paths, 24 kB on-chip RAM, 576 B ROM, and a Host Interface plus SSI and SCI serial ports. The device targets embedded signal-processing workloads requiring deterministic execution and large on-chip memory, which is essential for sample buffering in codecs and modem algorithms. The DSP563xx architecture uses a dual Harvard memory structure with separate program and data memories, enabling single-cycle instruction fetches and data accesses. The 196-MAPBGA package provides the pin density needed for the parallel Host Interface, ESAI/SSI serial audio port, SCI, and timers, while supporting industrial operating-temperature ranges of -40C to +105C junction. Typical applications include wireless infrastructure baseband processing, audio/speech codecs, modems, professional audio equipment, and industrial control systems. The 100 MIPS throughput is well matched to GSM channel cards, voice-band codecs (G.711/G.723/G.729), and consumer audio DSP where deterministic latency matters. When designing with this device, plan PCB layout carefully: the 196-ball MAPBGA requires microvia or laser-drilled via technology and matched-length traces on the Host Interface bus. Decoupling capacitors must be placed as close as possible to each power pin, and a 4-layer PCB with continuous power and ground planes is strongly recommended for signal integrity. This page synthesizes distributor pricing, drop-in alternatives from the DSP563xx family, and practical design notes not found in the manufacturer datasheet alone.

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