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EPF8820ABC225-3 - FLEX 8000 FPGA 672 LEs 8K Gates BGA-225 | Altera
EPF8820ABC225-3

EPF8820ABC225-3 - FLEX 8000 FPGA 672 LEs 8K Gates BGA-225 | Altera

The Altera (now Intel) EPF8820ABC225-3 is a member of the FLEX 8000 programmable logic device family, providing 8K usable gates, 672 logic elements, and up to 16,000 usable gates with 1,500 registers in a 225-pin BGA package. Manufactured on a 0.42 micron CMOS process, this -3 speed grade device operates from a 5V supply and supports in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, enabling field updates without removing the device from the PCB. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that contains an array of configurable logic blocks (CLBs), programmable interconnects, and configurable I/O cells. Unlike an application-specific integrated circuit (ASIC), an FPGA can be reconfigured after manufacturing, allowing engineers to implement custom digital logic without incurring NRE mask costs. The FLEX 8000 family sits in the taxonomy: PLD -> CPLD/FPGA -> SRAM-based FPGA -> fine-grained register-rich architecture, optimized for high register count and wide datapath designs. Key features of the EPF8820ABC225-3 include a maximum internal clock frequency of approximately 125 MHz (per published family datasheet), 3.3V or 5V configurable I/O support, JTAG-based boundary-scan testing, and a 4-input look-up table (LUT) based logic element architecture. The 225-ball BGA package provides high I/O density for memory bus, address bus, and datapath designs that demand high pin count. Typical applications include telecommunications line cards, industrial control and glue logic, legacy data acquisition backplanes, prototyping of ASIC designs, and bus interface bridges. The EPF8820ABC225-3 was widely adopted in the late 1990s for high-density register-rich designs including FIFO controllers, peripheral bridges, and protocol converters. When designing with this device, ensure proper decoupling on every VCC pin and use the dedicated JTAG chain for in-system programming. Note that the FLEX 8000 family has been NRND for many years and is now considered obsolete; modern alternatives like Cyclone IV/V offer substantially higher logic density at lower power.

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EPF8820ABC225-4 - FLEX 8000 FPGA 8K Gates 5V 225-BGA | Intel
EPF8820ABC225-4

EPF8820ABC225-4 - FLEX 8000 FPGA 8K Gates 5V 225-BGA | Intel

The Intel / Altera EPF8820ABC225-4 is a member of the FLEX 8000 family of SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 8,000 typical gates, 672 logic cells, and 152 user I/Os in a 225-ball BGA package. Fabricated on a 0.42 µm CMOS process, it operates from a 5 V supply (4.75 V to 5.25 V) at commercial temperature grade (0 °C to +70 °C) with a system performance rating of 125 MHz. A Field-Programmable Gate Array (FPGA) is a reconfigurable digital integrated circuit whose logic functionality is defined after manufacturing by loading a configuration bitstream into on-chip SRAM. FPGAs sit at the top of the programmable logic hierarchy, above CPLDs and SPLDs, and are used wherever high gate counts, parallel data-path manipulation, or fast time-to-market outweigh the unit-cost advantage of an ASIC. The FLEX 8000 family was one of the first Altera device families to introduce logic elements (LEs) that combine a 4-input look-up table with a programmable register, supported by a continuous routing fabric. The EPF8820ABC225-4 organizes 672 logic cells across 84 Logic Array Blocks (LABs) and exposes 152 user I/O pins. Its 4-input LUT architecture plus dedicated carry chains allows efficient implementation of arithmetic functions, datapath registers, and state machines. Typical applications include glue logic replacement, bus interfacing, DSP pre/post-processing, and wide datapath manipulation in industrial control and telecom infrastructure. Architecturally, the device uses SRAM configuration cells, meaning it must be reconfigured at every power-up (typically from a serial EPROM or microcontroller). The 225-BGA package at 19 × 19 mm provides ample signal escape and thermal headroom for the commercial-grade silicon. Power consumption scales with toggle rate and clock frequency; in static (un-clocked) conditions the device draws substantially less than at 125 MHz full-toggle. The -4 speed grade identifies a faster timing bin within the EPF8820 family, supporting internal toggle rates up to 125 MHz. The 'BC225' suffix specifies the 225-ball BGA package, while the trailing '-4' marks the speed grade and commercial operating temperature. A slower -3 speed grade is also available in the same package for cost-sensitive designs where the additional timing margin is acceptable.

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EPF8820ABC225-4U - FLEX 8000 FPGA, 672 LE, 225-BGA | Altera
EPF8820ABC225-4U

EPF8820ABC225-4U - FLEX 8000 FPGA, 672 LE, 225-BGA | Altera

The Intel / Altera EPF8820ABC225-4U is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs) supplied in a 225-ball Plastic BGA (225-BGA) package. It provides approximately 8,000 usable gates (672 logic elements / 84 Logic Array Blocks) with 152 user I/Os, operates from a 4.75 V to 5.25 V core supply, and is offered in a commercial 0 °C to 85 °C temperature grade. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit composed of configurable logic blocks, programmable interconnect, and I/O cells that the user can define after manufacture via a bitstream loaded into on-chip SRAM. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs), above simple PLDs (SPLDs) and complex PLDs (CPLDs), and below fixed-function ASICs in terms of integration density. The FLEX 8000 family specifically targets low-cost, high-density glue logic, bus interfacing, and state-machine consolidation, with system-level features such as in-circuit reconfigurability (ICR) via external configuration EPROMs or intelligent controllers. Key features include a register-rich architecture optimized for synchronous designs, multi-voltage I/O support (5.0 V PCI-compliant), JTAG (IEEE 1149.1) boundary-scan testing, and built-in PCI compliance for embedded bus applications. The 225-BGA package uses a 19 × 19 mm body and provides a robust thermal envelope for industrial temperature operation. Combined with SRAM-based configuration, the part allows unlimited reconfiguration during the product lifecycle, supporting field upgrades and design iteration without hardware rework. The FLEX 8000 architecture employs a four-input look-up table (LUT) plus a flip-flop per logic element, with fast continuous routing channels between Logic Array Blocks (LABs) to deliver predictable timing closure. The carry-chain and cascade-chain interconnects accelerate arithmetic and wide-decoder functions. The SRAM configuration cell is volatile, requiring a configuration memory on every power-up, typically a serial EPROM such as the EPC1 or EPC2 configuration device from the same Altera family. Typical applications include PCI bus interface bridges, peripheral controllers in networking line cards, glue-logic consolidation in legacy industrial PC/104 designs, and asynchronous-to-synchronous clock-domain bridges. The 152 available user I/Os accommodate parallel buses and multi-port memory interfaces, while the SRAM configuration permits in-system firmware updates over JTAG or processor-driven configuration schemes. When designing with this device, ensure proper power-supply sequencing: VCCINT (5 V core) must ramp monotonically before configuration is attempted. The user must select a configuration scheme (passive serial, passive parallel, or JTAG) and a compatible configuration memory device. Note that this MPN suffix 'U' indicates a tray packaging variant of the EPF8820ABC225-4 die; pinout, electrical specs, and timing are identical. This page synthesizes verified distributor pricing, drop-in same-package alternatives, BGA handling design notes, and configuration-scheming guidance not aggregated on any single manufacturer or distributor page.

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EPF8820AGC192-2 - FLEX 8000 FPGA, 8K Gates, 192-Pin CPGA | Intel
EPF8820AGC192-2

EPF8820AGC192-2 - FLEX 8000 FPGA, 8K Gates, 192-Pin CPGA | Intel

The Intel EPF8820AGC192-2 is a member of the FLEX 8000 programmable logic device family, delivering 8K usable gates, 672 logic cells, and a maximum internal clock frequency of 125 MHz in a 192-pin Ceramic Pin Grid Array (CPGA) package. Fabricated on a 0.42 µm CMOS process and powered from a 5 V supply, the EPF8820AGC192-2 delivers up to 16,000 usable gates and 1,500 registers with in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers. An FPGA (Field Programmable Gate Array) is a type of integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that can be electrically reconfigured by the designer after manufacture. FPGAs sit within the broader hierarchy: programmable logic device (PLD) -> FPGA -> programmable logic -> digital semiconductor. The FLEX 8000 family, introduced in the mid-1990s, was one of the early register-rich, SRAM-based CMOS PLD families aimed at glue-logic, bus-interface, and state-machine consolidation in 5 V systems. Key features include a maximum clock frequency of 125 MHz, propagation delay of 5.0 ns (per third-party catalog data), 3.3 V or 5 V tolerant I/O operation, and configurable I/O standards. The device supports multiple I/O voltage references, allowing direct interfacing with 3.3 V and 5 V buses. In-circuit reconfigurability lets the design be updated in-system without removing the part, which was a defining advantage of the FLEX 8000 family over one-time-programmable PLDs. Architecturally, the EPF8820AGC192-2 uses a SRAM-based lookup-table fabric backed by registers, with FastTrack interconnect providing predictable routing delays. The 192-pin CPGA ceramic package is intended for through-hole industrial and military sockets where mechanical robustness and thermal performance outweigh the board area required by plastic QFP alternatives. Typical applications include industrial bus controllers, legacy 5 V system glue logic, telecom backplane interface logic, prototyping platforms, and retrocomputing or avionics systems where FLEX 8000 designs are preserved as firmware-equivalent IP. The 5 V tolerant I/O simplifies integration with TTL and CMOS legacy buses. When designing with this part, ensure the configuration EPROM is correctly selected and that ICR is disabled during reset to prevent spurious configuration loading. The CPGA package requires a through-hole socket; verify socket footprint and pin-1 orientation before layout. This page synthesizes distributor pricing, parametric compatibility data, and practical design considerations not aggregated on any single manufacturer or distributor page, complementing the original FLEX 8000 datasheet.

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EPF8820AQC160-2 - FLEX 8000 FPGA, 672 Cells, 160-PQFP | Intel
EPF8820AQC160-2

EPF8820AQC160-2 - FLEX 8000 FPGA, 672 Cells, 160-PQFP | Intel

The Intel (formerly Altera) EPF8820AQC160-2 is a member of the FLEX 8000 family of CMOS SRAM-based programmable logic devices, offering 672 logic elements (cells) and 120 user I/Os in a 160-pin Plastic Quad Flat Pack (PQFP) package. Built on a 0.42 µm CMOS process and rated for a 5 V supply, it delivers up to 8,000 usable gates with a maximum toggle frequency of 125 MHz, making it suitable for glue-logic, bus-interface, and medium-complexity state-machine designs in commercial-grade systems. An FPGA (Field Programmable Gate Array) is a semiconductor device containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells, all of which can be reconfigured after manufacture. FPGAs sit in the broader hierarchy of programmable logic devices (PLDs) between simple CPLDs and high-density SoC FPGAs, and they are widely used for digital logic prototyping, custom interface bridging, and small-volume hardware acceleration where ASIC NRE costs are prohibitive. The FLEX 8000 series pioneered in-circuit reconfigurability (ICR) via an external serial or parallel configuration EPROM, allowing field updates without removing the device from the board. Key features of the EPF8820AQC160-2 include 120 user I/O pins supporting 5 V PCI-compliant signaling, a built-in JTAG (IEEE 1149.1) boundary-scan test interface, and a hierarchical interconnect architecture that routes signals between logic elements through fast local and global routing resources. The device supports both synchronous and asynchronous design styles, and its rich register count (approximately 712 flip-flops across the 672 logic elements) makes it well suited to pipelined datapaths and control logic with significant state-holding requirements. From a technical perspective, the FLEX 8000 architecture implements each logic element as a 4-input look-up table (LUT) feeding a programmable register, with carry-chain support for fast arithmetic. The SRAM configuration memory means the device is volatile and must be loaded at power-up, typically from a serial configuration PROM such as the EPC1 or EPC2. The -2 speed grade indicates a mid-tier timing closure suitable for most commercial designs at clock rates up to 125 MHz. Typical applications include PCI bus interface bridges, custom peripheral controllers for legacy microprocessors, glue logic replacing multiple 74-series TTL devices, industrial control boards with moderate logic density, and telecommunications line-card interface logic. The 160-pin PQFP package is easy to hand-prototype and rework, making the EPF8820AQC160-2 a popular choice for low-volume production and engineering development platforms. When designing with this device, ensure the configuration memory solution (EPC1/EPC2 or compatible) is correctly wired to the dedicated configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0). Because the configuration is SRAM-based, plan for deterministic power-up behavior, and add JTAG boundary-scan to simplify board test. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers shorten the sourcing cycle for legacy FLEX 8000 designs.

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EPF8820AQC160-3 - 8K Gates FLEX 8000 FPGA, 120 I/O, 5V | Intel
EPF8820AQC160-3

EPF8820AQC160-3 - 8K Gates FLEX 8000 FPGA, 120 I/O, 5V | Intel

The Intel EPF8820AQC160-3 is a member of the FLEX 8000 programmable logic device family, delivering 8,000 usable gates, 672 logic cells, and 120 user I/Os in a 160-pin BQFP package. Built on a 0.42 um CMOS process and supplied from a 5 V rail, the device operates at up to 125 MHz system frequency and supports in-circuit reconfigurability (ICR) via external configuration devices or an intelligent controller. The -3 speed grade places this part in the moderate-performance tier of the FLEX 8000 family, suitable for glue-logic, bus-interface, and PCI Local Bus bridging designs. A field programmable gate array (FPGA) is a semiconductor integrated circuit that can be configured by the customer after manufacturing to implement arbitrary digital logic. Architecturally an FPGA sits above simple PLDs (PALs, GALs) and below ASICs in the logic-density hierarchy: it offers far more gates than a CPLD while remaining reprogrammable, making it a hybrid between programmable logic and custom silicon. FPGAs like the FLEX 8000 family integrate programmable logic elements (LEs), embedded interconnect, and configurable I/O cells on a single die, and they are widely used for prototyping, low-volume production, and design re-spin avoidance. Key features of the EPF8820AQC160-3 include 84 Logic Array Blocks (LABs), 1,500 registers, 282 to 1,500 flip-flops, and built-in PCI SIG-compliant bus interface support. Each LE contains a 4-input look-up table, a programmable flip-flop, and dedicated carry and cascade paths that accelerate arithmetic and wide fan-in functions. The device integrates JTAG boundary-scan test circuitry (IEEE 1149.1) for board-level test access. From an architectural perspective, the FLEX 8000 family uses a continuous, row-and-column interconnect structure with FastTrack Interconnect channels that provide predictable timing across the device. The 5 V tolerant I/O pins drive 120 external signals, sufficient for 32-bit processor buses plus memory and peripheral interfaces. The -3 speed grade delivers internal toggle rates suitable for 50-66 MHz PCI bus designs. Typical applications include PCI Local Bus interface bridges, peripheral controllers for embedded systems, industrial glue logic, prototyping for ASICs, and high-density state-machine replacement. The wide supply tolerance and CMOS process make it compatible with TTL-level peripherals. When designing with the EPF8820AQC160-3, ensure your board-level decoupling follows Altera's reference design and that configuration is supplied via an Altera EPC configuration EPROM or JTAG. Avoid using this legacy part in new 3.3 V-only designs; the 5 V supply is a defining constraint. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the EPF8820AQC160-3 not found in the manufacturer datasheet alone.

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EPF8820AQC160-4 - 8K Gate FLEX 8000 FPGA 672 Cells 160-PQFP | Altera
EPF8820AQC160-4

EPF8820AQC160-4 - 8K Gate FLEX 8000 FPGA 672 Cells 160-PQFP | Altera

The Intel (formerly Altera) EPF8820AQC160-4 is a member of the FLEX 8000 programmable logic family, integrating approximately 8,000 usable gates, 672 logic cells (Logic Elements / flip-flop pairs), and 120 user I/Os in a 160-pin Plastic Quad Flat Pack (PQFP / BQFP) surface-mount package. It is fabricated on a 0.42 µm CMOS process, operates from a single 5 V supply, and supports system frequencies up to 125 MHz. The device carries the speed grade "-4" and commercial temperature grade (0 °C to 70 °C). A FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that allows engineers to implement custom digital logic through a matrix of configurable logic blocks (CLBs / LEs), programmable interconnect, and I/O cells. FPGAs sit between fixed-function ASICs and smaller CPLDs in the programmable logic hierarchy: they offer higher density and richer register-rich architecture than CPLDs, while providing faster prototyping and lower NRE cost than ASICs. The FLEX 8000 family targets glue-logic, bus-interface, DSP preprocessing, and data-path applications where register density and continuous fast routing matter more than absolute gate count. Key features of the EPF8820AQC160-4 include 84 Logic Array Blocks (LABs), continuous high-performance routing resources, in-circuit reconfigurability (ICR) via external configuration devices, and a register-rich architecture suitable for state machines, pipelined datapaths, and DSP frontend functions. The four-input look-up-table (LUT) based LE delivers predictable combinational and sequential logic performance, while multiple fast-row and fast-column interconnect channels minimize critical-path delay across the die. Technically, the EPF8820AQC160-4 implements an SRAM-based configuration memory (volatile, must be configured at every power-up from an external EPROM or micro-controller). Each LE embeds a 4-input LUT plus a programmable register, and groups of eight LEs form a LAB with local interconnect. The device supports JTAG (IEEE 1149.1) boundary-scan testing, tri-state bus drivers on every I/O, and PCI-compatible output drive strengths. It uses 5 V CMOS/TTL I/O with multi-voltage I/O (MVIO) capability through separate VCCIO banks in some package variants. Typical applications include telecommunications line-card glue logic, industrial-control interface bridging, DSP co-processing front-ends, wide data-path manipulation, and data-format conversion in legacy 5 V systems. Designers often select the EPF8820AQC160-4 when they need moderate logic density with abundant I/O in a proven mature-node process. A key design consideration is configuration: this device does not retain its bitstream when power is removed, so designers must pair it with a serial configuration EPROM (EPC1, EPC2, EPC16) or use a micro-controller to load the bitstream at boot. Because the FLEX 8000 family has been NRND for many years, designers should verify long-term availability and consider the Altera Cyclone series for new designs. This page synthesizes distributor pricing, application guidance, and drop-in same-family alternatives not typically collected on a single manufacturer datasheet page — useful when extending the lifecycle of installed FLEX 8000 designs or sourcing replacements for obsolete stock.

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EPF8820AQC208-2 - FLEX 8000 FPGA, 8K Gates, 152 I/O, 5V, PQFP-208 | Altera
EPF8820AQC208-2

EPF8820AQC208-2 - FLEX 8000 FPGA, 8K Gates, 152 I/O, 5V, PQFP-208 | Altera

The Altera (Intel Programmable Solutions Group) EPF8820AQC208-2 is a member of the FLEX 8000 family of CMOS Field-Programmable Gate Arrays (FPGAs), delivering approximately 8,000 usable gates, 672 logic cells (also referred to as registers), and 152 user I/Os at a maximum toggle frequency of 125 MHz, all in a 208-pin Power Quad Flat Pack (PQFP) package. The device operates from a 5 V supply and is specified over the commercial 0 C to 70 C temperature range, targeting glue-logic, bus-interface, and state-machine replacement in legacy 5V designs. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines an array of configurable logic blocks (CLBs), a programmable interconnect fabric, and programmable I/O cells. Within the broader semiconductor taxonomy, an FPGA belongs to: FPGA -> programmable logic device (PLD) -> logic IC -> integrated circuit -> semiconductor. FPGAs differ from CPLDs primarily by their SRAM-based configuration memory and finer-grained architecture, and they are typically used where high gate counts, register-rich designs, or in-system reconfigurability are required. The FLEX 8000 family is implemented in a 5 V CMOS process with on-chip SRAM configuration memory. Each logic element (LE) contains a 4-input look-up table, a programmable register, and dedicated carry and cascade chains, allowing efficient implementation of arithmetic and wide fan-in logic. The interconnect uses continuous, fast-path lines across the entire die for predictable timing, and the device supports in-circuit reconfigurability (ICR) via external configuration devices, enabling field upgrades without removing the part from the system. Key features of the EPF8820AQC208-2 include 84 Logic Array Blocks (LABs) of 8 LEs each (672 LEs total), 152 user I/O pins with 5 V tolerant I/O buffers, JTAG-based boundary-scan testing compliant with IEEE 1149.1, and a dedicated configuration interface. The PQFP-208 package provides gull-wing leads on a 28 mm x 28 mm body suitable for standard surface-mount assembly with a 0.5 mm lead pitch. Typical applications include bus-interface bridging (PCI, ISA, VME), glue logic replacement for discrete 74-series TTL/CMOS, industrial control state machines, prototyping ASICs, and legacy telecom/datacom equipment that still operates from 5 V rails. The combination of high I/O count and 5V tolerance makes the EPF8820AQC208-2 well suited for backplane interfacing where 5V signaling is mandatory. When designing with this part, note that FLEX 8000 devices are SRAM-based and require a configuration ROM on every power-up; JTAG programming alone does not retain the design. Designers should also verify that the 5V I/O tolerance is compatible with downstream devices and consider using series resistors or bus-switches when bridging to 3.3V peripherals. As the FLEX 8000 family is long since EOL/NRND, second-source qualification of pin-compatible alternatives is recommended for new designs. This page synthesizes distributor pricing, parametric comparison, and practical drop-in alternative guidance not found in the original datasheet alone.

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EPF8820AQC208-2N - 8K Gates FLEX 8000 FPGA | Altera | 5V
EPF8820AQC208-2N

EPF8820AQC208-2N - 8K Gates FLEX 8000 FPGA | Altera | 5V

The Intel (formerly Altera) EPF8820AQC208-2N is a CMOS SRAM-based FLEX 8000 family FPGA with approximately 8,000 usable gates and 672 logic elements, packaged in a 208-pin Power Quad Flat Pack (PQFP/QFP). The device supports 152 user I/O pins, runs from a 5 V supply, and is fabricated on a 0.42 µm CMOS process node, achieving a maximum toggle frequency around 125 MHz with a propagation delay of roughly 5 ns. An FPGA (Field-Programmable Gate Array) is a programmable logic device that integrates configurable logic blocks, programmable interconnect, and I/O cells on a single die. Within the broader semiconductor taxonomy, FPGAs sit alongside CPLDs, microcontrollers, and ASICs as the dominant platforms for digital logic implementation. The FLEX 8000 family specifically targets register-rich, glue-logic and bus-integration applications, sitting hierarchically between low-density PLDs and high-density ASICs. Key features of the EPF8820AQC208-2N include 672 logic elements, 152 user I/O pins, JTAG-based in-system reconfigurability via the ByteBlaster interface, four dedicated fast inputs, multiVolt I/O support for 3.3 V and 5 V interfaces, and a global low-skew clock network. The device uses a continuous SRAM configuration architecture, so it must be configured at every power-up by an external EPROM, an Altera EPC1/EPC1441 configuration device, or a system controller. Architecturally, FLEX 8000 devices use a Logic Array Block (LAB) structure of 8 logic elements per LAB with shared carry chains and cascade paths, surrounded by a FastTrack Interconnect routing fabric. The embedded memory array holds the configuration bitstream, enabling live reconfiguration but making the part inherently volatile. The 5 V core and I/O operate at commercial temperature grade (0 to 70 °C), with the part produced under the FLEX 8000 family datasheet umbrella. Typical applications include high-speed bus bridges, peripheral controllers in telecom and networking, industrial machine control glue logic, prototyping for ASIC replacement, and bus-intensive designs such as 32-bit RISC/CISC peripheral glue. The 152 I/O pins accommodate multiple parallel buses in a single device, eliminating external bus-multiplexing logic. When designing with this part, ensure that configuration is supplied on every power-up using an EPC-series configuration device or microcontroller, and observe 5 V VCCINT and VCCIO decoupling guidelines. The part is EOL/legacy; new designs should consider Cyclone or MAX families.

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EPF8820AQC208-3 - FLEX 8000 FPGA, 672 LEs, 208-PQFP | Altera
EPF8820AQC208-3

EPF8820AQC208-3 - FLEX 8000 FPGA, 672 LEs, 208-PQFP | Altera

The Altera (Intel) EPF8820AQC208-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), housed in a 208-pin Plastic Quad Flat Pack (PQFP) package with 152 user I/Os. It integrates 672 logic elements and 8,000 usable gates, organized into 84 Logic Array Blocks (LABs), and operates from a 5 V supply (4.75 V to 5.25 V). A Field Programmable Gate Array (FPGA) is a semiconductor IC built around an array of configurable logic blocks (CLBs/LABs) connected by programmable interconnect. FPGAs belong to the broader category of programmable logic devices (PLDs), which sit between fixed-function ASICs and discrete logic in the design hierarchy. Unlike gate arrays or standard-cell ASICs, FPGAs are reprogrammed in-circuit, accelerating prototyping and reducing non-recurring engineering (NRE) cost. The FLEX 8000 architecture combines a fine-grained logic fabric with dedicated FastTrack interconnect and a continuous SRAM configuration memory. Each LAB contains 8 logic elements (LEs) and local interconnect, while FastTrack rows and columns provide predictable, tpd-independent delays across the device. The EPF8820AQC208-3 also features built-in JTAG (IEEE 1149.1) boundary-scan support and in-circuit reconfigurability (ICR) via external EPROM (EPC1, EPC1064, EPC1213, EPC1441) or a system controller. Typical applications include glue-logic replacement, peripheral bus bridging, custom state-machine controllers, telecom interface glue, and industrial control front-ends. The 152 available I/Os at 5 V tolerance (commercial grade 0C to 70C) make it well suited to legacy TTL/CMOS bus interfaces. The device is also commonly deployed as a hardware accelerator for DSP pre/post-processing in cost-sensitive systems where modern FPGAs are over-spec. When designing with this part, note that the EPF8820AQC208-3 is marked Obsolete/EOL per the latest distributor listings; only remaining stock and refurbished supply are available. Designers should validate long-term availability for new production and consider modern Cyclone or MAX series as functionally equivalent drop-in alternatives where possible. This page synthesizes distributor pricing, pin-to-pin compatible alternatives from the Altera FLEX 8000 family, and design notes not found on the original Altera datasheet, including context on SRAM configuration and JTAG testing for legacy designs.

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EPF8820AQC208-3N - FLEX 8000 FPGA 8K Gates 672 Cells | Altera
EPF8820AQC208-3N

EPF8820AQC208-3N - FLEX 8000 FPGA 8K Gates 672 Cells | Altera

The Altera EPF8820AQC208-3N is a member of the FLEX 8000 programmable logic device family, integrating approximately 8,000 usable gates, 672 logic cells (LEs), and 152 user I/Os in a 208-pin FQFP (PQFP) package. It is fabricated on a 0.42 µm CMOS SRAM process and operates from a 5 V supply with a commercial 0 °C to 70 °C temperature range. An FPGA (Field-Programmable Gate Array) is a semiconductor IC whose logic and interconnect resources are configured by the end user via a bitstream loaded into on-chip SRAM configuration memory. FPGAs sit above CPLDs, ASSPs, and discrete logic in the programmable logic hierarchy and below custom ASICs in unit cost but above them in design flexibility and time-to-market. The FLEX 8000 family pioneered high-density, register-rich CMOS PLDs targeting glue logic, bus integration, and system-level integration that previously required multiple 32-bit bus devices in separate packages. Key features of the EPF8820AQC208-3N include in-circuit reconfigurability (ICR) via external configuration devices or a system controller, fast 16-bit loadable counter performance rated at 95 MHz, a 16-to-1 multiplexer delay of 7.9 ns at the -3 speed grade, and CMOS SRAM-based configuration elements that allow unlimited reconfiguration. The 152 user I/O count supports wide parallel bus interfaces, and the high-pin-count 208-FQFP package integrates multiple 32-bit buses into a single device. Configuration is performed at system power-up using data stored in an industry-standard parallel EPROM or via Altera EPC1, EPC1213, EPC1064, or EPC1441 serial configuration devices. Architecturally, FLEX 8000 devices use Logic Elements (LEs) tied together by a continuous FastTrack interconnect, with embedded array blocks (EABs) for memory-intensive functions. The 0.42 µm process supports up to 16,000 usable gates, and the speed grade -3N indicates the -3 speed bin (slower than -4) with N denoting a non-lead-free or commercial finish variant. Typical applications include industrial control, telecom interface cards, and legacy bus-bridge replacement. Typical applications include industrial automation control, legacy telecom interface cards, PCI bus bridges, glue-logic consolidation in 5 V industrial systems, and educational/hobbyist development platforms. The wide I/O count makes it suitable for interfacing with parallel SRAM, FIFOs, and microprocessors of its era. Design with care when migrating to modern 3.3 V systems; the 5 V I/Os are tolerant but not strictly 3.3 V-compliant. When designing with this FPGA, observe that configuration data is volatile and must be reloaded on every power-up. Ensure proper decoupling of VCCINT and VCCIO rails, and verify timing closure against the -3 speed grade rather than the -2 or -4 grades. For new designs, consider that FLEX 8000 is in legacy lifecycle status. This page synthesizes distributor pricing, same-family drop-in alternatives, FQFP-208 footprint compatibility data, and practical configuration-design notes not found in the original FLEX 8000 datasheet - useful for engineers maintaining legacy 5 V systems.

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EPF8820AQC208-4 - FLEX 8000 FPGA, 672 Cells, 152 I/O, 5V | Intel
EPF8820AQC208-4

EPF8820AQC208-4 - FLEX 8000 FPGA, 672 Cells, 152 I/O, 5V | Intel

The Intel (formerly Altera) EPF8820AQC208-4 is a member of the FLEX 8000 family of CMOS Field-Programmable Gate Arrays, integrating 672 logic cells (8K usable gates) with 152 user I/Os in a 208-pin Power Quad Flat Pack (PQFP/BFQFP) package. The device is fabricated on a 0.42 µm CMOS process, supports a 5 V core supply, and operates at up to 125 MHz system frequency, making it suitable for high-volume glue-logic and bus-interface designs. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the density of gate arrays with the design flexibility of in-system reprogrammability. FPGAs occupy a tier between simple PLDs (PAL/GAL, CPLDs) and ASICs in the broader semiconductor hierarchy: programmable logic -> PLD -> CPLD/FPGA -> programmable semiconductor. The FLEX 8000 series was Altera's first generation of register-rich, SRAM-based FPGAs with in-circuit reconfigurability, marking a transition away from one-time programmable fuse-link devices. Key features of the EPF8820AQC208-4 include 84 Logic Array Blocks (LABs), 152 user I/O pins, MultiVolt I/O support for 3.3 V and 5.0 V interface operation, in-circuit reconfigurability (ICR) via external configuration devices, and a continuous commercial temperature range of 0 °C to 70 °C. The PQFP-208 package provides a robust gull-wing lead footprint compatible with standard surface-mount assembly lines. From an architectural standpoint, the EPF8820AQC208-4 uses an SRAM-based look-up-table (LUT) fabric with embedded register-rich LABs, a fast continuous interconnect network, and dedicated I/O cells supporting JTAG boundary-scan and MultiVolt I/O standards. In-circuit reconfigurability allows the device to be reprogrammed on the PCB without removing the part, a major advantage over fuse-based PLDs. Typical applications for the EPF8820AQC208-4 include industrial glue-logic replacement, PCI bus interface bridging, telecommunications line-card controllers, and legacy embedded control systems. The 152 I/Os make it attractive for designs that need to consolidate multiple discrete 74-series logic functions onto a single programmable device. When designing with this device, note that it is now a mature legacy part with limited distributor stock; engineers should verify long-term availability or plan a migration to a Cyclone-family replacement before entering volume production. The 5 V VCCIO option supports direct interfacing to legacy TTL/CMOS logic without level shifters. This page synthesizes distributor pricing, drop-in same-family alternatives, and design notes not found in the original FLEX 8000 datasheet, providing practical sourcing and engineering guidance for engineers maintaining legacy FLEX 8000 designs.

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EPF8820ARC-4 - FLEX 8000 FPGA 672 Logic Elements | Altera
EPF8820ARC-4

EPF8820ARC-4 - FLEX 8000 FPGA 672 Logic Elements | Altera

The Intel / Altera EPF8820ARC-4 is a member of the FLEX 8000 family of SRAM-based Field Programmable Gate Arrays (FPGAs) with 672 logic elements (LEs), 152 user I/O pins, and a -4 speed grade. According to the Altera FLEX 8000 datasheet, the EPF8820ARC-4 is supplied in a 208-pin BFQFP (R-C suffix) package and operates from a 5V VCCINT with 3.3V or 5V tolerant I/O, making it compatible with mixed-voltage legacy and 3.3V ASIC interfaces. A Field Programmable Gate Array (FPGA) is a programmable logic device containing an array of configurable logic blocks (CLBs), programmable interconnects, and configurable I/O cells. FPGAs sit in the broader hierarchy of programmable logic -> logic ICs -> integrated circuits -> semiconductors, and are used to implement arbitrary digital logic that can be reconfigured after manufacture. The FLEX 8000 family specifically targets glue logic, bus interface, and state-machine applications in telecom, industrial, and embedded systems. Key features of the EPF8820ARC-4 include 672 logic elements (LEs), 152 user I/O pins, an embedded array block (EAB) for memory functions, and a -4 speed grade providing a balance between timing performance and power. The device supports in-system programmability via the Altera BitBlaster or ByteBlaster download cable, and configuration can be stored in serial EPROM or via the passive serial / passive parallel asynchronous modes. Compared with smaller FLEX 8000 members, the EPF8820 provides more than 3x the logic density of the EPF8282 family. Architecturally, the EPF8820 uses Altera's Classic look-up table (LUT) approach combined with EAB blocks for efficient RAM/ROM implementation. The device is built on a 0.5 um CMOS SRAM process, which provides deterministic configuration and unlimited re-programmability but requires a configuration device at power-up. The 208-pin BFQFP package exposes both core and I/O power rails for noise decoupling. Typical applications include telecommunications line cards, industrial control glue logic, ASIC prototyping, and legacy bus-interface bridges. Designers select the EPF8820ARC-4 when they need medium logic density with a generous I/O count in a robust surface-mount plastic QFP. The FLEX 8000 family is widely supported by the Altera (now Intel) MAX+PLUS II and Quartus design tools. When designing with the EPF8820ARC-4, ensure a configuration EPROM (such as the Altera EPC1 or EPC2) is present at power-up since FLEX 8000 devices are SRAM-based and lose configuration when VCCINT drops. Decouple all VCCINT and VCCIO pins individually with 0.1 uF capacitors, and provide a minimum of 6 layers or a solid ground plane to suppress simultaneous switching noise on the 152 I/Os. Operating junction temperature must stay below 85C for commercial and 100C for industrial grades.

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EPF8820ARC-4N - FLEX 8000 FPGA 672-Cell 5V | Intel (Altera)
EPF8820ARC-4N

EPF8820ARC-4N - FLEX 8000 FPGA 672-Cell 5V | Intel (Altera)

The Intel (formerly Altera) EPF8820ARC-4N is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays, integrating 8,000 usable gates and 672 logic elements in a 208-pin RQFP (Plastic Quad Flat Pack) package. Built on a 0.42 µm CMOS process and powered from a 5 V supply, the device is rated for operation up to 125 MHz and is intended for system-level logic integration where deterministic, reconfigurable hardware is required. FLEX 8000 devices are SRAM-based programmable logic devices (PLDs). They belong to the broader taxonomy of FPGAs -> programmable logic -> logic ICs -> integrated circuits. Unlike antifuse or flash FPGAs, FLEX 8000 SRAM cells must be configured at every system power-up using external memory, which makes them reconfigurable in-circuit but volatile. Within the family, the EPF8820 sits in the mid-density tier between the smaller EPF8282/EPF8452 and the larger EPF8636/EPF81188. Key features of the EPF8820ARC-4N include 672 logic elements (LEs), 152 maximum user I/O pins, an embedded array block for wide fan-in functions, FastTrack interconnect for predictable routing delays, and a 4-input look-up table (LUT) per logic element. The '-4N' speed grade combined with industrial temperature support (0 °C to +70 °C junction) makes the part a drop-in upgrade candidate for FLEX 8000 designs where timing closure is critical. The exposed pad on the RQFP-208 package provides an additional thermal dissipation path. The device is configured at power-up via an industry-standard parallel EPROM or via Altera's serial configuration devices EPC1, EPC1064, EPC1213, and EPC1441. After configuration, the SRAM cells define both the logic function and the interconnect, allowing full in-system reprogrammability. The architecture is supported by the Altera MAX+PLUS II and Quartus design toolchains, which accept schematics, VHDL, and Verilog HDL inputs. Typical applications include glue logic for legacy 5 V embedded systems, industrial control and instrumentation, bus-interface bridging, and ASIC prototyping where the design is intended to migrate to a hard-structured ASIC. The wide operating voltage and broad third-party IP ecosystem (UARTs, FIFOs, memory controllers) extend the device's usefulness to telecom, military, and avionics platforms where FLEX 8000 remains a long-lived standard. A key design consideration for EPF8820ARC-4N is the configuration memory interface: because the SRAM configuration is volatile, the board must include a configuration EPROM, a microcontroller loader, or a JTAG chain (IEEE 1149.1 boundary-scan) to reload the bitstream on every power-up. Designers should also budget for the 5 V I/O bank supply and ensure that all inputs stay within the 5 V tolerant range to avoid latch-up. This page synthesizes distributor pricing, drop-in FLEX 8000 family alternatives, and practical configuration/PCB layout notes not found in the manufacturer datasheet, giving engineers a single source for parametric, lifecycle, and replacement decisions.

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EPF8820ARC160-2 - FLEX 8000 FPGA, 672 LE, 120 I/O, 160-BQFP | Intel
EPF8820ARC160-2

EPF8820ARC160-2 - FLEX 8000 FPGA, 672 LE, 120 I/O, 160-BQFP | Intel

The Intel EPF8820ARC160-2 is a member of the classic FLEX 8000 family of SRAM-based, electrically reprogrammable FPGAs, delivering 8,000 typical gates with 672 logic elements (LEs) organized into 84 Logic Array Blocks (LABs) and providing 120 user I/O pins in a 160-pin BQFP (Metric Quad Flat Pack) surface-mount package. It operates from a single 5 V supply (4.75 V to 5.25 V), is specified over the commercial 0 °C to 70 °C temperature range, and is designed for high-volume glue-logic, bus-interface, and state-machine integration where ASIC NRE costs cannot be justified. What is a FLEX 8000 FPGA? FLEX 8000 is a legacy SRAM-based Field-Programmable Gate Array family introduced by Altera (now Intel PSG) in the mid-1990s. Hierarchically, FLEX 8000 sits between simple PLDs/CPLDs (small logic-only devices) and modern high-density SRAM FPGAs (Cyclone, MAX series): device -> FPGA -> programmable logic -> integrated circuit -> semiconductor. FPGAs contain configurable logic blocks (here, 4-LUT-based LEs grouped into LABs), programmable routing, and I/O cells; SRAM configuration makes them in-system reprogrammable but requires a configuration memory on every power-up. Key features include 120 user I/O pins supporting 5 V TTL/CMOS interfaces, on-chip SRAM-based configuration memory, multi-volt I/O compatibility, JTAG (IEEE 1149.1) boundary-scan test support, and a 4-input Look-Up Table (LUT) logic architecture. The part is built on a 0.5 µm CMOS SRAM process (Altera FLEX 8000 family), giving it non-volatile operation only when paired with an external configuration EPROM such as the EPC1 or EPC2. The device targets applications like industrial control glue logic, telecom line-card interface bridging, PCI bus interface bridging, custom peripherals for embedded microprocessors, and legacy replacement of 74-series and 4000-series MSI/LSI logic. With 120 I/O it can sink/source up to 25 mA per pin (typical) and supports PCI-compliant drive. When designing with EPF8820ARC160-2, plan for configuration: a serial configuration EPROM (EPC1/EPC2) or microcontroller must load the SRAM at every power-up. The 160-BQFP package has a footprint roughly 28 mm × 28 mm; provide four-layer PCB with solid ground and power planes for noise-sensitive applications. This page synthesizes distributor pricing, lifecycle status, and parametric comparison versus same-family Intel FLEX 8000 variants and cross-brand Xilinx XC3000/XC4000 equivalents - information that is not consolidated on any single distributor page.

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EPF8820ARC208-2 - 8K-Gate FLEX 8000 FPGA 152 I/O | Altera
EPF8820ARC208-2

EPF8820ARC208-2 - 8K-Gate FLEX 8000 FPGA 152 I/O | Altera

The Altera EPF8820ARC208-2 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays, integrating 672 logic cells, 152 user I/O pins, and approximately 8,000 usable gates in a 208-pin RQFP/BFQFP package with exposed thermal pad. It is fabricated on a 0.42 µm CMOS process, operates from a 5 V supply, and is rated for commercial-temperature operation with a -2 speed grade targeting 125 MHz internal performance. An FPGA (Field Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells. FPGAs sit between fixed-function ASICs and discrete logic: like an ASIC they implement arbitrary digital functions, but unlike an ASIC the design is loaded into on-chip SRAM at every power-up, enabling in-circuit reconfigurability (ICR). Within the broader taxonomy, EPF8820ARC208-2 belongs to PLD -> CPLD/FPGA -> SRAM-based FPGA -> high-density register-rich programmable logic family, a category historically used for glue logic, bus bridging, and state-machine consolidation in telecom, industrial, and computing designs. Key features include MultiVolt I/O operation (3.3 V or 5.0 V interface on all packages except 84-pin variants), in-system configuration via Altera EPC1/EPC1064/EPC1213/EPC1441 serial configuration devices or a microprocessor, 1,500 registers across the array, and JTAG-compliant boundary-scan test support. The Logic Array Blocks (LABs) and Enhanced Interconnect provide deterministic, predictable timing that Quartus and MAX+PLUS II development flows exploit for fast compile cycles. The architecture combines four Logic Elements per Logic Array Block, FastTrack continuous routing, and dedicated carry chains for arithmetic. Internal SRAM configuration memory is volatile, so an external configuration EPROM or controller must present the bitstream on each power-up; this is what makes FLEX 8000 devices in-circuit reconfigurable but also non-volatile-free in their default form. Typical applications include telecommunications line-card glue logic, industrial control and factory automation state machines, PCI/ISA bus bridges, video and image-processing data-path controllers, and legacy 5 V computing systems that require drop-in 5 V-tolerant I/O. The MultiVolt feature is particularly attractive in mixed-voltage designs (3.3 V core, 5 V peripherals). When designing with EPF8820ARC208-2, ensure the configuration scheme (EPC serial device, parallel EPROM, or microcontroller) is correctly dimensioned for the chosen bitstream size and that the exposed thermal pad is soldered to a sufficient copper pour to keep junction temperature within the commercial range. This page synthesizes Altera FLEX 8000 datasheet extracts, DigiKey/Mouser distributor pricing, drop-in same-family alternatives, and practical design considerations not found on any single manufacturer or distributor page.

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EPF8820ARC208-24 - FLEX 8000 FPGA, 8K Gates, 672 Cells, 208-RQFP | Altera
EPF8820ARC208-24

EPF8820ARC208-24 - FLEX 8000 FPGA, 8K Gates, 672 Cells, 208-RQFP | Altera

The Altera EPF8820ARC208-24 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs) with 8,000 usable gates, 672 logic cells, and 152 user I/O pins in a 208-pin RQFP (Plastic Quad Flat Pack) package with exposed pad. It is built on a 0.42 µm CMOS process, supports a 5 V core supply (4.75 V to 5.25 V), and is offered in a -24 speed grade. A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the high integration of a gate array with the field-programmability of a PLD. The FLEX 8000 architecture sits in the hierarchy as follows: logic cell -> Logic Array Block (LAB) -> row/column interconnect -> FLEX 8000 device -> programmable logic -> semiconductor IC. Compared to simple PLDs (SPLDs/CPLDs), FPGAs provide higher logic density, more registers, and richer interconnect, at the cost of higher unit price and the need for an external configuration memory. Key features of the EPF8820ARC208-24 include in-circuit reconfigurability (ICR) via Altera EPC1, EPC1064, EPC1213, and EPC1441 serial configuration devices, MultiVolt I/O supporting 3.3 V and 5.0 V interface operation, a built-in Joint Test Action Group (JTAG) boundary-scan test interface, and a typical toggle frequency up to 125 MHz. The architecture is register-rich, making it well-suited to pipelined datapaths, state machines, and bus interfaces. Typical applications include industrial control glue logic, telecommunications interface cards, glue logic for ASIC prototyping, and bus-bridging interfaces (for example, between a microprocessor and a peripheral bus). Designers migrating legacy FLEX 8000 designs to newer process nodes typically pair the EPF8820ARC208-24 with the MAX+PLUS II or Quartus design environment to retain bitstream compatibility. When designing with this device, pay attention to the 5 V supply rail tolerance and the need for a dedicated configuration PROM or microcontroller at power-up. Because the FLEX 8000 family is in production decline, lifecycle planning and long-term stocking are recommended for new designs.

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EPF8820ARC208-2A - FLEX 8000 FPGA, 672 Logic Elements, 152 I/O | Altera
EPF8820ARC208-2A

EPF8820ARC208-2A - FLEX 8000 FPGA, 672 Logic Elements, 152 I/O | Altera

The Altera EPF8820ARC208-2A is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 672 logic elements (LEs), 84 logic array blocks (LABs), and 152 user I/O pins in a 208-pin Square Plastic Quad Flat Pack (S-PQFP) package with an exposed thermal pad and a 0.500 mm terminal pitch. It operates from a 4.75 V to 5.25 V supply and is rated for commercial temperature range (0 °C to 70 °C). The -2A speed grade delivers a typical propagation delay of approximately 5 ns, targeting glue-logic and bus-interface applications of the late 1990s and early 2000s. What is an FPGA? A Field-Programmable Gate Array is a programmable logic device containing an array of configurable logic blocks (CLBs/LABs), programmable routing channels, and programmable I/O cells. Unlike a CPLD (Complex Programmable Logic Device) which uses non-volatile EEPROM/Flash cells, the FLEX 8000 family uses volatile SRAM configuration cells - meaning the device must be reconfigured at every power-up using a serial configuration PROM (EPC1, EPC1064, EPC1213, or EPC1441) or a microcontroller. FPGAs sit in the broader hierarchy: programmable logic device (PLD) -> FPGA -> SRAM-based FPGA -> FLEX 8000 family. Key features include 152 user I/O, 672 logic elements organized into 84 LABs, embedded SRAM for distributed memory, JTAG (IEEE 1149.1) boundary-scan test support, multiVolt I/O allowing 3.3 V or 5.0 V interface levels on VCCIO pins, and tri-state buffer control on every I/O. The architecture combines fine-grained logic with predictable interconnect delays suitable for synchronous state machines, FIFO buffers, and custom peripheral implementations. Technical depth: the FLEX 8000 family uses a continuous-row LAB architecture with FastTrack Interconnect running horizontally and vertically between rows. Each LAB contains 8 logic elements, and each LE contains a 4-input look-up table (LUT), a programmable register, and dedicated carry chain logic. Embedded array blocks (EABs) provide on-chip RAM/ROM up to 2 Kbits per block. Configuration is loaded serially via the DATA0/DCLK/nCONFIG pins or in parallel via the EPC series PROMs. Typical applications include 5 V-tolerant glue logic, PCI bus interface bridges (33 MHz, 32-bit), industrial control state machines, custom peripheral replacement on legacy 8051/MIPS systems, and telecom backplane glue. The 5 V tolerance on VCCIO pins allows direct interface to legacy TTL logic without level shifters. Design consideration: the FLEX 8000 family is in legacy/last-time-buy status - confirm lifecycle before starting a new design. Always include a JTAG header for in-system programming (ISP) via the Altera ByteBlaster or USB-Blaster download cable. This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, including lifecycle alerts and configuration PROM recommendations.

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EPF8820ARC208-2H - FLEX 8000 FPGA, 672 LEs, 152 I/O | Altera
EPF8820ARC208-2H

EPF8820ARC208-2H - FLEX 8000 FPGA, 672 LEs, 152 I/O | Altera

The Altera EPF8820ARC208-2H is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), delivering 672 logic elements with 152 user I/O pins in a 208-pin fine-pitch plastic quad flatpack (S-PQFP-G208) with 0.500 mm terminal pitch and an exposed thermal pad. A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the integration density of an application-specific integrated circuit with the flexibility of software-programmed hardware. FPGAs sit within the broader hierarchy of programmable logic: PLD -> CPLD -> FPGA -> SoC FPGA. The FLEX 8000 family uses CMOS SRAM configuration elements that are loaded at system power-up from an industry-standard parallel EPROM, an Altera serial configuration device (such as EPC1, EPC1213, EPC1064, or EPC1441), or a system controller - making the device volatile and re-programmable in-circuit. Key specifications of the EPF8820ARC208-2H include a 5.0 ns propagation delay through combinational paths, support for 3.3V or 5.0V I/O levels (selectable via VCCIO pins), and 152 I/O lines with 4 dedicated inputs and 148 outputs supporting registered output macrocell functions. The device operates across an extended temperature range suitable for industrial environments and is housed in a 208-ball exposed-pad QFP package. Architecture-wise, the FLEX 8000 family implements a logic-element based fabric with continuous interconnect routing and embedded array blocks, providing high register counts suitable for digital signal processing, wide-data-path manipulation, bus interfacing, TTL integration, coprocessor functions, and high-speed control logic. The high-pin-count 208-pin package allows multiple 32-bit buses to be integrated within a single device. Typical applications include industrial control systems, telecommunications infrastructure, prototyping and logic emulation, glue logic replacement, and legacy system maintenance. Engineers most often encounter the EPF8820ARC208-2H when sustaining or replicating older Altera-based designs where modern Cyclone or MAX families would require a complete board re-spin. When designing with this device, ensure correct VCCIO selection (3.3V or 5.0V) to match downstream logic levels, and pair it with a compatible configuration PROM or controller for SRAM-based bitstream loading. The exposed thermal pad must be soldered to a sufficiently large copper pour to meet the package's thermal resistance specification. This page synthesizes distributor pricing, drop-in Altera FLEX 8000 alternatives, and practical design notes not found in the original manufacturer datasheet - providing an information-gain reference for engineers maintaining legacy Altera designs.

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EPF8820ARC208-2N - FLEX 8000 8K Gate 672-Cell FPGA | Altera
EPF8820ARC208-2N

EPF8820ARC208-2N - FLEX 8000 8K Gate 672-Cell FPGA | Altera

The Altera EPF8820ARC208-2N is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 8,000 usable gates organized as 672 logic elements (LEs) in a 208-pin RQFP (BFQFP with exposed pad) package. It is fabricated on a 0.42 µm process and operates from a 5 V supply with selectable 3.3 V or 5.0 V VCCIO for output bank compatibility, supporting up to 152 user I/O pins (148 outputs plus 4 dedicated inputs) at toggle frequencies up to 125 MHz. An FPGA (Field-Programmable Gate Array) is a programmable logic device that combines a matrix of configurable logic blocks (LEs) with programmable interconnect and I/O cells. Within the broader hierarchy, this places it as: programmable logic -> programmable logic device -> integrated circuit -> semiconductor. FLEX 8000 sits between simple PLDs/CPLDs (gate-count-limited) and modern high-density FPGAs, providing register-rich, in-system reconfigurable logic at a low cost per gate. Key features of the EPF8820ARC208-2N include in-circuit reconfigurability (ICR) via external EPC1, EPC1213, EPC1064, or EPC1441 Altera configuration devices or a system controller, JTAG boundary-scan test support, and tri-state output buffers with programmable slew-rate control. The 208-pin RQFP package provides an exposed thermal pad that reduces junction-to-ambient thermal resistance for higher-power designs. The FLEX 8000 architecture uses look-up table (LUT)-based logic elements, fast carry chains for arithmetic, a cascade chain for wide fan-in functions, and a hierarchical interconnect with FastTrack routing. The SRAM configuration memory allows unlimited reconfiguration but requires external non-volatile storage, which Altera provides through its dedicated EPC series configuration EPROMs. Typical applications include telecommunications glue logic, industrial control interfacing, PCI bus bridges, DSP co-processing front-ends, and legacy system prototyping where a 5 V-tolerant, register-rich PLD replaces multiple discrete 74LS/74F TTL packages. Its in-system reconfigurability also suits remote field-upgradeable designs. When designing with this device, allocate sufficient configuration time during power-up and verify VCCIO levels match downstream logic; mixing 5 V TTL and 3.3 V logic in different I/O banks is supported only with proper bank-by-bank VCCIO selection. The exposed pad of the 208-RQFP must be soldered to a sufficient copper pour for thermal dissipation. This page synthesizes distributor pricing, drop-in FLEX 8000 alternatives, application notes, and PCB layout guidance not found in the original manufacturer datasheet, providing engineering value beyond what Altera's datasheet alone offers.

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EPF8820ARC208-3 - FLEX 8000 FPGA, 8K Gates, 672 Cells | Intel / Altera
EPF8820ARC208-3

EPF8820ARC208-3 - FLEX 8000 FPGA, 8K Gates, 672 Cells | Intel / Altera

The Intel (formerly Altera) EPF8820ARC208-3 is a member of the FLEX 8000 family of CMOS field-programmable gate arrays (FPGAs), featuring 8,000 usable gates, 672 logic cells, and 152 registers in a 208-pin RQFP/BFQFP package with exposed pad. Built on a 0.42 µm CMOS process, it operates from a 4.75V to 5.25V single supply and supports system clock frequencies up to 125 MHz, making it a classic high-density programmable logic device for industrial, telecommunications, and embedded glue-logic designs of the late 1990s and early 2000s. A field-programmable gate array (FPGA) is a type of programmable logic device (PLD) - itself a category of integrated circuit - that combines a matrix of configurable logic blocks (CLBs), embedded memory, and programmable routing to implement arbitrary digital logic. FPGAs sit at the top of the programmable logic hierarchy (CPLD -> PLD -> FPGA -> programmable SoC) and offer higher gate counts and richer register/IO resources than simpler CPLDs. The FLEX 8000 family was Altera's first generation of look-up-table (LUT)-based FPGAs with embedded memory, replacing earlier MAX-series PAL/GAL architectures with true register-rich, in-system reconfigurable logic. Key features include in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, four dedicated low-skew clock distribution networks, JTAG boundary-scan test support (IEEE 1149.1), and tri-stateable I/O buffers with individually programmable slew-rate control. The device also integrates fast on-chip logic for arithmetic functions and provides selectable 3.3V/5V I/O tolerance through dedicated PCI-compliant output buffers, simplifying mixed-voltage interfacing on legacy backplanes. The EPF8820ARC208-3 architecture consists of 672 logic elements arranged in rows and columns, with each element containing a 4-input look-up table, a programmable flip-flop, and dedicated carry-chain logic for arithmetic operations. Configuration memory is SRAM-based, requiring a serial or parallel EPROM (such as the EPC2 or EPC8 configuration device) to load the bitstream at power-up. This SRAM architecture allows unlimited reconfigurations and supports in-field firmware upgrades, but also means the configuration is volatile and must be reloaded after every power cycle. Typical applications include telecommunications channel aggregation, industrial control and factory automation glue logic, military and aerospace systems, PCI bus interfaces, legacy mainframe and storage interfaces, and digital signal processing front-ends. The wide 5V supply tolerance and 208-pin package also make it well suited for industrial 24V-conditioned rails with local regulation and for backplane designs that route many parallel signals. When designing with this device, ensure proper decoupling on every VCC/VCCIO pin, place the configuration EPROM within the recommended trace-length budget, and honor the exposed-pad soldering requirement to maintain the specified thermal resistance. Designers migrating to modern designs should evaluate Intel Cyclone or Lattice ECP5 families, but pin-compatible FLEX 8000 variants remain available for long-life-cycle programs. This page synthesizes distributor pricing, drop-in alternatives from the FLEX 8000 family, and practical design notes not found in the manufacturer datasheet alone - providing a single authoritative reference for procurement and engineering teams.

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EPF8820ARC208-3-NW - 8K-Gate FLEX 8000 FPGA, 208-RQFP | Altera
EPF8820ARC208-3-NW

EPF8820ARC208-3-NW - 8K-Gate FLEX 8000 FPGA, 208-RQFP | Altera

The Altera (now Intel) EPF8820ARC208-3-NW is a member of the FLEX 8000 family of CMOS programmable logic devices (PLDs), delivering up to 8,000 usable gates, 1,500 registers, and 152 user I/O pins in a 208-pin RQFP (28x28 mm) package with an exposed thermal pad. The device operates from a 4.75 V to 5.25 V single supply and supports system clock frequencies consistent with 5 V FLEX 8000 silicon, making it a drop-in legacy option for industrial and military designs. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be configured by the customer or designer after manufacturing to implement any digital logic function. FPGAs sit in the broader taxonomy of programmable logic devices -> complex programmable logic devices (CPLDs) and FPGAs -> programmable logic -> digital IC -> integrated circuit. FLEX 8000 devices occupy the high-density register-rich segment of Altera's classic SRAM-based FPGA portfolio, sitting between early MAX-class CPLDs and later APEX/Cyclone families in both density and process node. Key features include in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, 100% factory-tested logic, multiVolt I/O support in compatible families, and JTAG-based boundary-scan testing. The device offers 4.75V-5.25V core supply tolerance, 152 user I/Os, and a power-optimized architecture that supports sleep mode for low-power standby. The exposed thermal pad on the 208-RQFP package allows PCB ground-plane attachment for improved heat spreading in industrial chassis. The FLEX 8000 architecture uses an SRAM-based look-up table (LUT) fabric with embedded register cells, offering faster place-and-route than CPLDs but requiring configuration at every power-up. Typical applications include industrial glue logic replacement, telecommunications backplane glue, legacy 5 V bus controllers, prototyping platforms for VHDL/Verilog designs, and digital signal conditioning interfaces. The device is well suited to designs that need high register count and I/O density without migrating to newer 3.3 V / 1.5 V FPGA families, particularly where the 5 V tolerance of FLEX 8000 is required. Design considerations include mandatory external configuration memory (EPC) for SRAM configuration cells, JTAG programming chain design, and careful 5 V power-rail decoupling to support hot-swap or backplane insertion. This page synthesizes distributor pricing, FLEX 8000 family alternatives, and configuration-memory design notes that go beyond the bare datasheet.

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EPF8820ARC208-3N - FLEX 8000 FPGA, 672 LEs, 125MHz, 208-RQFP | Altera
EPF8820ARC208-3N

EPF8820ARC208-3N - FLEX 8000 FPGA, 672 LEs, 125MHz, 208-RQFP | Altera

The Altera EPF8820ARC208-3N is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 8,000 usable gates and 672 logic elements in a 208-pin PowerQuad QFP (RQFP) package with exposed pad. The device is fabricated in 0.42 µm CMOS technology, operates from a 5V supply (4.75 V to 5.25 V), and supports user I/O voltages of either 3.3 V or 5 V. Internal configuration memory is implemented with industry-standard SRAM, requiring an external Altera configuration device (EPC1, EPC1213, EPC1064, or EPC1441) or a system controller to load the bitstream at power-up. An FPGA (Field-Programmable Gate Array) is a programmable logic device (PLD) that combines the architectural flexibility of gate arrays with the time-to-market advantage of in-system configuration. Within the broader semiconductor hierarchy, an FPGA sits between simple PLDs (PALs, GALs) and fixed-function ASICs, offering thousands of look-up tables (LUTs), registers, and dedicated routing resources that engineers can re-program repeatedly. The FLEX 8000 family specifically targets low-cost, high-density applications where register-rich logic and predictable timing are critical. Each Logic Array Block (LAB) contains ten Logic Elements (LEs), each LE comprising a 4-input LUT, a programmable flip-flop with clear/preset, dedicated high-speed paths for carry and cascade chains, and bidirectional interconnect. Key specifications of the EPF8820ARC208-3N include a maximum operating frequency of 125 MHz, a propagation delay of approximately 5 ns (-3 speed grade), a FlipFlop count of 152, and 208 user I/O pins distributed across the package. In-system reconfigurability allows the device to be reloaded without powering down, while JTAG support enables boundary-scan test and configuration verification. Dedicated clock, clear, and preset control signals can be driven either by dedicated input pins, general-purpose I/O, or internal logic, giving designers flexible clock-domain management. Typical applications for the EPF8820ARC208-3N include industrial control logic, glue logic and bus interfacing in legacy 5 V systems, prototyping interfaces for ASIC replacement, glue logic between microprocessors and peripherals, and digital signal processing front-ends. The 5 V tolerance and high-drive I/O also make it well-suited for telecommunications backplane designs and test-and-measurement equipment. Although Intel/Altera has officially classified the FLEX 8000 family as legacy, Rochester Electronics and authorized aftermarket distributors continue to support long-term supply for aerospace, defense, and industrial programs. When designing with this part, pay special attention to configuration: a properly sized EPC-series configuration device must match the bitstream size, and JTAG or PS configuration modes must be selected via MSEL pins. Decoupling the VCCINT and VCCIO rails with 0.1 µF and 10 µF ceramic capacitors is essential for clean power delivery to the SRAM configuration cells. This page synthesizes distributor pricing (as of 2026-09-12), drop-in alternatives within the FLEX 8000 family, and practical design considerations not typically found in a standalone datasheet PDF.

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EPF8820ARC208-4 - FLEX 8000 FPGA, 8K Gates, 672 Cells, 208-RQFP | Altera
EPF8820ARC208-4

EPF8820ARC208-4 - FLEX 8000 FPGA, 8K Gates, 672 Cells, 208-RQFP | Altera

The Altera (now Intel Programmable Solutions Group) EPF8820ARC208-4 is a member of the legacy FLEX 8000 family of CMOS programmable logic devices, integrating approximately 8,000 usable gates and 672 logic elements into 152 user I/O pins and packaged in a 208-pin RQFP (28x28 mm) with exposed thermal pad. It operates from a 4.75 V to 5.25 V supply, supports in-circuit reconfigurability (ICR) via external configuration devices, and is offered in the -4 speed grade. Background: A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines high gate density with reconfigurable interconnect and logic. Within the broader taxonomy, the EPF8820ARC208-4 belongs to the FLEX 8000 family (PLD -> CPLD/FPGA -> SRAM-based FPGA -> FLEX 8000). FPGAs differ from CPLDs in architecture by offering distributed logic-element arrays with SRAM-based configuration memory, enabling higher density and more flexible routing at the cost of requiring external configuration memory on power-up. Key differentiating features include 152 maximum user I/O pins, 672 logic cells (registers), an approximate 16,000-gate device density ceiling, 5 V tolerant I/O, and the -4 speed grade designation. The -4 speed grade implies a particular toggle-rate/performance tier within the FLEX 8000 family, with other grades (-3, -2) offering different fMAX/per-pin performance. The 208-RQFP package with exposed pad aids thermal dissipation for high-utilization designs. Architecturally, the FLEX 8000 family uses a continuous SRAM-based configuration memory (each logic element and routing switch is loaded from a serial/parallel configuration bitstream at power-up). This is the same fundamental approach used by modern SRAM FPGAs and explains why the family supports in-circuit reconfigurability - the device can be reloaded while resident on a board, unlike antifuse or one-time-programmable devices. Typical applications include legacy telecom line cards, industrial glue logic replacement, prototyping platforms for ASIC emulation, and 5 V-tolerant bus-interface bridging. The wide 5 V supply tolerance and 152 I/O make the EPF8820ARC208-4 well suited to mixed 3.3 V / 5 V system integration where modern 1.8 V-only FPGAs cannot directly interface legacy logic. When designing with the EPF8820ARC208-4, designers should account for the external configuration device requirement (the part is SRAM-based and does not retain configuration without an EPC/EPCS serial configuration memory or parallel PROM). Engineers also planning a modern redesign should note that this family is mature/last-time-buy, and that newer Cyclone or MAX families from Intel/Altera are pin-compatible upgrades for many footprints.

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