FPGA & CPLD
Produits (6666)
EPF10K200SFI672-2N - 200K-Gate FLEX 10KE FPGA, 672-BGA | Intel
The Intel (formerly Altera) EPF10K200SFI672-2N is a 200,000-gate member of the FLEX 10KE embedded programmable logic device family, integrating 9,984 logic elements (LEs), 98,304 bits of embedded memory, and 470 user I/Os into a single 672-ball FineLine BGA (FBGA) package. Speed grade -2 places the device in the mid-speed bin for the family, while the "I" suffix denotes the industrial temperature grade (-40C to +85C). The "N" suffix indicates a lead-free, RoHS-compliant package finish. FLEX 10KE devices belong to the FLEX (Flexible Logic Element matriX) family of SRAM-based FPGAs, with each LE containing a 4-input look-up table, a programmable register, and dedicated carry and cascade chains. FLEX 10KE extends the original FLEX 10K architecture by adding True-Look-Up-Table dual-port embedded array blocks (EABs) that double as 4 Kbit SRAM memories, and by adding FastTrack Interconnect routing that improves timing predictability and density utilization. They sit within the broader hierarchy of SRAM-based programmable logic devices (PLDs), which in turn form a major branch of digital semiconductor ICs. Key differentiating specifications include 9,984 logic elements, 12 EABs delivering 98,304 RAM bits, 470 user I/Os, a 0.22 um CMOS process, 2.5 V core supply (5.0 V tolerant I/O with PCI compliance), JTAG boundary-scan test per IEEE Std. 1149.1, and 200 MHz internal operation. The embedded JTAG circuitry adds up to 31,250 gates overhead without consuming user logic. Typical applications include telecommunications line cards, industrial control backplanes, military/aerospace signal processing, and PCI-based add-in card prototyping. The combination of 470 I/Os and ~200K gates supports wide datapath designs including 32-bit microcontrollers, multi-channel DMA engines, and protocol bridges. When designing with this device, note that it is SRAM-based and therefore requires a configuration ROM (such as an EPC2) on every board - the FLEX 10KE will not retain its configuration through power cycles without external boot storage. The 672-FBGA package has a 27 x 27 mm body with 1.0 mm ball pitch, so PCB layout must support fine-pitch BGA fanout with microvia or via-in-pad technology on most stackups. EOL warnings apply; check Intel/Altera PCN history before new designs. This page synthesizes datasheet specifications, distributor pricing, drop-in alternatives from the same FLEX 10KE family, and practical design notes that the bare datasheet PDF does not provide in one place.
EPF10K200SRC240-1 - 200K Gate FLEX-10KS FPGA, 240-RQFP | Intel
The Intel EPF10K200SRC240-1 is a high-density FLEX-10KS series Field-Programmable Gate Array (FPGA) housed in a 240-pin RQFP (BFQFP with exposed pad) package, delivering up to 200,000 typical system gates and 9,984 logic elements backed by 98,304 bits of embedded SRAM. According to the Altera FLEX 10K Embedded Programmable Logic Family Data Sheet, the device provides 1,248 Logic Array Blocks (LABs), 182 user I/Os, and embedded array blocks that implement a wide range of memory and logic functions. The "SRC240-1" suffix indicates the standard 240-pin RQFP package and the -1 speed grade (fastest of the FLEX 10K family at 5.0 V). A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells. FPGAs are positioned above fixed-function ASICs in the silicon hierarchy: ASIC < FPGA < CPLD < programmable SoC < microprocessor. The FLEX 10K family pioneered embedded array blocks (EABs), which are RAM/ROM blocks that can be configured as wide SRAM, FIFO, ROM, or specialized logic, allowing each device to host both gates and megabytes of memory on one die. This makes FLEX 10K devices a bridge between simple glue-logic CPLDs and full-scale microprocessors. Key features of the EPF10K200SRC240-1 include the FLEX 10K SRAM-based architecture with in-system programmability via IEEE 1149.1 JTAG, multiVolt I/O supporting 5.0 V, 3.3 V, and 2.5 V interfaces, four dedicated clock input pins with on-chip PLL-style clock management, and built-in boundary-scan test. The device integrates 24 EABs totaling 40,960 bits, supports true dual-port RAM configurations, and provides configurable high-drive I/O for backplane driving. Embedded JTAG circuitry adds up to 31,250 gates beyond the listed gate count for boundary-scan and test logic. The 240-RQFP (32 x 32 mm BFQFP with exposed thermal pad) package exposes a metal pad on the underside for low thermal resistance and board-level grounding. Designers must use the standard FineLine BGA-pin-compatible migration strategy when planning a board that may move between FLEX 10K densities; Altera's datasheet recommends reserving only the I/O pins common to all candidate devices. Programming is performed through the JTAG port using Quartus II or MAX+PLUS II software. Typical applications include telecom line-card glue logic, industrial control state machines, PCI bridge interfaces, and legacy 5 V prototyping platforms. The exposed-pad package requires a thermal via array and copper pour directly under the part for heat spreading. When designing with this device, ensure all I/O banks share a common VCCIO if 5 V tolerance is required, since multiVolt I/O is per-bank. Designers migrating from FLEX 10K to FLEX 10KE should review the migration guide because EAB block RAM speeds and LAB interconnect changed between families. This page synthesizes distributor pricing, drop-in same-package alternatives from the same FLEX 10K family, and practical design notes not found in the manufacturer datasheet alone.
EPF10K200SRC240-1N - 200K FLEX 10KE FPGA, 240-BFQFP | Intel
The Intel (Altera) EPF10K200SRC240-1N is a member of the FLEX 10KE family of Field-Programmable Gate Arrays (FPGAs) featuring 9,984 logic elements and 200K equivalent gates, fabricated on a 0.22 µm CMOS process. It is housed in a 240-pin BQFP (Exposed Pad) package operating from a 2.5 V core supply. The device supports up to 182 user I/Os and includes 1,248 Logic Array Blocks (LABs), with embedded array blocks (EABs) that provide on-chip memory and arithmetic functions, making it well suited for high-density glue-logic, datapath, and interface bridging tasks. An FPGA (Field-Programmable Gate Array) is a reprogrammable semiconductor device containing an array of configurable logic blocks (CLBs / LABs), programmable interconnect, and I/O cells that engineers can customize via a hardware description language (HDL). Within the broader hierarchy, an FPGA belongs to programmable logic devices -> digital logic ICs -> integrated circuits -> semiconductors. FPGAs fill the gap between fixed-function ASICs (high NRE, high volume) and discrete glue logic (low density, fixed function), enabling rapid prototyping, low-volume production, and field upgradability. Key features include 9,984 logic elements (cells), 1,248 LABs, 182 I/O pins, embedded array blocks for memory, and a maximum internal operating frequency of 250 MHz. The device is built on SRAM-based configuration cells, supporting in-system reprogrammability via the Altera/Intel Quartus or MAX+PLUS II design flows. It is rated for commercial operating temperature grades and uses the 240-pin BQFP exposed-pad package for improved thermal dissipation in surface-mount reflow processes. The FLEX 10KE architecture combines a fine-grained logic fabric with coarse-grained EABs, allowing efficient implementation of wide multiplexers, arithmetic functions, and small FIFOs without consuming general-purpose routing. Configuration data is stored in an SRAM cell, requiring a configuration device or microcontroller for in-system programming. The exposed pad on the BQFP package provides a low-thermal-resistance path to the PCB, important for the high toggle rates typical of 200K-gate designs. Typical applications include industrial control glue logic, legacy telecommunications interface cards, low-volume prototyping adapters, custom peripheral bridges, and educational digital-design platforms. The wide I/O count and embedded memory make it suitable for systems that require parallel datapath processing combined with control logic. Because the silicon is older and the family is in obsolescence transition, it is most commonly deployed as a long-life replacement for installed equipment rather than for green-field designs. When designing with this device, allocate sufficient PCB area for the exposed thermal pad and follow Intel/Altera application notes for JTAG chain configuration and in-system programming. Because the EPF10K200SRC240-1N is a mature part approaching end-of-life, designers should validate long-term supply and consider newer Cyclone or MAX families for new programs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping procurement and design engineers evaluate the EPF10K200SRC240-1N against modern substitutes.
EPF10K200SRC240-1X - 200K Gate FLEX-10KS FPGA, 240-RQFP | Intel
The Intel (formerly Altera) EPF10K200SRC240-1X is a 200,000-gate member of the FLEX 10KS family of SRAM-based FPGAs, delivering 9,984 logic elements, 182 user I/O pins, and 98,304 bits of embedded SRAM in a 240-pin RQFP (32x32 mm, 0.5 mm pitch) package. The '-1X' suffix denotes the commercial speed grade (fastest) with industrial temperature range support. It operates from a 2.375 V to 2.625 V core supply with separate V/CCINT and V/CCIO rails for I/O banking flexibility. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around a matrix of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that an engineer can rewire after manufacturing to implement arbitrary digital circuits. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs) between traditional CPLDs (smaller, non-volatile, deterministic timing) and ASICs (custom-silicon performance at high NRE cost). The FLEX 10KS architecture introduced by Altera in the late 1990s was among the first commercial FPGAs to embed dedicated SRAM blocks (EABs/ESBs), making it suitable for data-path, DSP, and memory-intensive glue logic. Key features of the EPF10K200SRC240-1X include 9,984 logic elements, 1248 Logic Array Blocks (LABs), 98,304 embedded SRAM bits organized into Embedded Array Blocks (EABs), 182 maximum user I/O across 4 I/O banks, and multi-voltage I/O support (5.0 V, 3.3 V, 2.5 V). The device supports in-system configuration via serial or parallel EPROM/Flash, and is pin-compatible within the FLEX 10KS 240-pin RQFP family, enabling SameFrame migration to smaller or larger density parts without PCB rework. The FLEX 10KS architecture pairs a fine-grained logic fabric with row/column interconnect, an embedded array of SRAM blocks for wide-word memory or lookup-table expansion, and four I/O banks with independent V/CCIO rails for mixed-voltage interfacing. The '-1X' speed grade typically yields internal toggle rates around 250 MHz for simple counter paths, making the device adequate for legacy telecom, industrial control, and bus-bridging applications rather than high-speed SERDES work. Typical applications include legacy telecom line-card glue logic, industrial PLC backplanes, MIL-STD-1553 / ARINC 429 protocol bridges, parallel bus expansion (ISA, VME, PC/104), and pin-compatible upgrades for designs originally built on EPF10K100 / EPF10K130 / EPF10K200E FLEX 10K family members. The 240-RQFP package is also attractive for hand-solderable prototypes and field-repair scenarios where BGA rework equipment is unavailable. When designing with this part, verify that the chosen JTAG chain programmer supports the FLEX 10KS family (Quartus II 13.0 or MAX+PLUS II 10.2 are the last fully supported toolchains). For new designs, consider Cyclone IV or MAX II as modern pin-compatible migration targets; for drop-in replacement of an obsolete or EOL FLEX 10KS board, the part is currently available through authorized distributors and franchised brokers. This page consolidates distributor stock, drop-in same-package alternatives within the FLEX 10KS family, and practical sourcing notes that are not present in the legacy FLEX 10KS datasheet volume.
EPF10K200SRC240-2 - FLEX 10KS FPGA, 9984 LEs, 240-RQFP | Intel
The Intel (formerly Altera) EPF10K200SRC240-2 is a member of the FLEX 10KS family of Field Programmable Gate Arrays (FPGAs) fabricated on a 0.42 micrometer CMOS SRAM process, delivering 9984 logic elements (LEs), 1248 Logic Array Blocks (LABs) and 98304 bits of embedded RAM in a 240-pin RQFP (32x32 mm) package with exposed thermal pad. The device supports 182 user I/O pins and operates from a 2.5 V core supply (2.375 V to 2.625 V). The “-2” suffix denotes a speed grade of approximately 80 MHz internal operation, suitable for medium-speed glue-logic, bridge and control applications. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that combines configurable logic blocks, programmable interconnect and embedded memory arrays into a single silicon die. Within the broader taxonomy, FPGAs sit under the Programmable Logic Device umbrella -> Integrated Circuit -> Semiconductor. The FLEX 10KS family was the industry’s first FPGA with embedded system blocks, allowing designers to integrate ASIC-like memory, bus controllers, and arithmetic units alongside conventional logic fabric. Key features include 9984 logic elements distributed across 1248 LABs, 98304 bits of distributed RAM, 182 user I/Os, and a commercial-grade 0C to 70C operating range. The 240-pin RQFP (also referred to as 240-BFQFP with exposed pad) supports surface-mount assembly on standard FR-4 PCB technology, with gull-wing leads on a 32x32 mm body. The device is in-system programmable via the IEEE 1149.1 JTAG interface or the legacy Altera EPC configuration EEPROM family. The architecture combines four-input look-up table (LUT) based logic elements with embedded array blocks (EABs) that can be configured as RAM, ROM or product-term logic. This hybrid fabric allows the implementation of both datapath pipelines and large memory arrays on a single device, eliminating external memory and reducing board area. The exposed thermal pad provides a low thermal-resistance path to the PCB copper pour, enabling higher sustained logic utilization. Typical applications include industrial control backplanes, telecommunications line-card glue logic, legacy PCI bridge designs, machine vision pre-processing, and test & measurement instrumentation. The 182 I/Os make the EPF10K200SRC240-2 well-suited for systems that need to consolidate multiple discrete logic devices, ASIC replacement, and rapid-prototyping of new bus architectures. When designing with this part, ensure that the Quartus II (or MAX+PLUS II for legacy flows) generated bitstream targets the FLEX 10KS device family and the -2 speed grade. Verify that the configuration EEPROM, clock buffers and decoupling network follow the FLEX 10KA/10KS handbook recommendations, and that the exposed pad is soldered to a sufficient ground copper pour for thermal dissipation. This page synthesizes distributor pricing, drop-in package alternatives within the FLEX 10KS family, and practical design notes not found in the original FLEX 10KS datasheet, enabling engineers to evaluate the EPF10K200SRC240-2 against modern and legacy FPGA alternatives.
EPF10K200SRC240-2X - FLEX 10K 200K Gates 9984 Cells FPGA | Altera
The Altera EPF10K200SRC240-2X is a high-density FLEX 10K-series Field Programmable Gate Array (FPGA) delivering 200,000 system gates, 9984 logic cells, and 1248 Logic Array Blocks (LABs), housed in a 240-pin PowerQuad Flat Package (RQFP/RQFP-240). It belongs to Intel/Altera's FLEX 10K family of embedded programmable logic devices (PLDs) that combine look-up table (LUT)-based logic with embedded array blocks (EABs) for on-chip memory and DSP functions. The device supports up to 470 user I/Os in some packages and provides typical propagation delays of approximately 0.4 ns to 0.8 ns at room temperature. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit designed to be configured by the customer or designer after manufacturing—hence "field-programmable". The FLEX 10K family specifically pioneered the embedded array architecture, where rows of logic elements are interleaved with columns of embedded array blocks (EABs), each EAB providing up to 2048 bits of RAM or a small ROM/DSP function. This positions FLEX 10K as a hybrid between classical FPGAs and early system-on-chip (SoC) devices, often referred to as system-on-a-programmable-chip (SOPC) integration. In the broader taxonomy, FPGAs sit under programmable logic devices (PLDs), which include SPLDs, CPLDs, and FPGAs, all of which fall under digital logic ICs and ultimately integrated circuits. Key features of the EPF10K200SRC240-2X include 200K equivalent gates, 9984 logic elements/cells, embedded array blocks providing up to approximately 98 Kbits of RAM, JTAG-compliant boundary-scan test (IEEE 1149.1) support, multi-voltage I/O standards, and a core supply of 2.5 V with I/O banks supporting 3.3 V, 5 V tolerant interfaces. The -2X speed grade denotes an industrial-temperature-grade device optimized for higher clock rates compared to -3 or -1N grades. The 240-pin RQFP-240 package (34.6 mm x 34.6 mm body, 0.5 mm pitch, gull-wing leads) is designed for surface-mount assembly on high-layer-count PCBs with thermal management via the exposed pad. Typical applications for the EPF10K200SRC240-2X include telecom switching equipment, ASIC prototyping, high-speed data-acquisition front-ends, industrial control systems, military and aerospace logic integration, glue logic for embedded motherboards, and legacy MRO (maintenance, repair, overhaul) programs where long-life-cycle parts are required. The device is widely used in PCI interface bridging, custom bus architectures, and DSP pre/post-processing pipelines. Compared to its sibling grades (-1N, -2, -3N), the -2X places in the upper-mid speed range with improved timing margin. Designers should pay close attention to I/O bank partitioning and VCCIO rail planning—each of the multiple I/O banks must be tied to a single VCCIO voltage (3.3 V typical, but 2.5 V and 5 V-tolerant inputs also supported on dedicated banks). Decoupling requirements call for multiple low-ESR 0.1 µF and 10 µF capacitors placed as close as possible to each VCC/VCCIO pin pair. Programming uses the Altera ByteBlaster or BitBlaster cable via JTAG or the legacy PS (passive serial) configuration mode. This page synthesizes distributor pricing, drop-in pin-compatible alternatives (including speed-grade variants in the same RQFP-240 footprint), parametric comparisons, and practical design notes not collated in any single manufacturer datasheet—giving sourcing engineers and program managers a one-stop reference for this long-life-cycle FPGA.
EPF10K200SRC240-3 - FLEX 10KE 200K-Gate FPGA, 240-RQFP | Intel
The Intel (formerly Altera) EPF10K200SRC240-3 is a member of the FLEX 10KE family of SRAM-based FPGAs, integrating 200,000 system gates, 9,984 logic elements, and 98,304 bits of embedded memory in a 240-pin RQFP (Power Quad Flat Pack) package with exposed pad. Built on a 0.22 um CMOS process and operating from a 2.5 V core supply, this device provides 470 user I/Os at a 0.5 mm pitch and is rated for the commercial 0 C to 70 C temperature range. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be configured by the customer after manufacturing to implement any digital logic function. The FLEX 10KE family specifically pioneered embedded array blocks (EABs) that combine programmable logic with on-chip dual-port RAM and ROM, enabling System-on-a-Programmable-Chip (SOPC) integration in a single device - a precursor to modern SoC FPGAs. FPGAs sit above ASICs and CPLDs in density while remaining reprogrammable. Key features of the EPF10K200SRC240-3 include 1,248 Logic Array Blocks / Configurable Logic Blocks (LABs/CLBs), four Delay-Locked Loops (DLLs) for clock skew management, 12 Embedded Array Blocks providing up to 98 Kbits of RAM, MultiVolt I/O supporting mixed-voltage interfacing, and an in-system programmability (ISP) interface via the passive serial or ByteBlaster configuration schemes. The device consumes approximately 0.4 ns propagation delay per logic element and runs at internal clock rates up to 166.67 MHz. Typical applications include telecommunications line cards, industrial control and factory automation, high-speed data acquisition front-ends, and legacy telecommunications and imaging systems designed during the late 1990s and early 2000s. The wide 470 I/O count makes it well suited for bus-intensive designs such as PCI bridges, memory controllers, and parallel DSP pipelines. When designing with this device, ensure the Quartus II or MAX+PLUS II toolchain is used for synthesis, place-and-route, and bitstream generation. The exposed pad of the RQFP-240 must be soldered to a copper pour to meet thermal specifications, and decoupling capacitors must be placed within 5 mm of every VCCINT and VCCIO pin pair.
EPF10K200SRC240-3N - FLEX 10KE FPGA 200K Gates 9984 Cells | Intel
The Intel (formerly Altera) EPF10K200SRC240-3N is a FLEX 10KE family Field Programmable Gate Array (FPGA) built on a 0.22 µm CMOS process, integrating 200,000 typical system gates and 9,984 logic elements (LEs) in a 240-pin RQFP (Power QFP) package with exposed pad. It features 470 user I/Os, 1248 Logic Array Blocks (LABs), and 24 Embedded Array Blocks (EABs) providing up to 98,304 bits of on-chip RAM, with a maximum internal operating frequency of 166.67 MHz and 0.22 µm SRAM-based configuration cells. A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the high integration density of an Application-Specific Integrated Circuit (ASIC) with the field-programmability of a Complex PLD (CPLD). Within the broader taxonomy, the FLEX 10KE belongs to the PLD -> CPLD/FPGA -> SRAM-based FPGA -> low-power FPGA hierarchy, intended for system-on-a-programmable-chip (SOPC) designs that require embedded memory, embedded logic, and substantial user I/O in a single device. Key differentiating features include a 2.5 V core supply, multi-volt I/O support for 2.5 V and 3.3 V interfaces, embedded IEEE Std 1149.1 JTAG boundary-scan test circuitry (contributing up to 31,250 gates of test logic), built-in phase-locked loops (PLLs) for clock management, and on-chip memory configured via Embedded Array Blocks (EABs). The -3N speed grade denotes a commercial-temperature device with a maximum propagation delay of 0.40 ns at the fastest logic path. The FLEX 10KE architecture combines a coarse-grained Logic Array Block fabric with fine-grained Logic Element cells and dedicated EAB SRAM blocks, allowing designers to implement both register-rich glue logic and moderately sized dual-port or ROM memories without external components. MultiVolt I/O pins enable seamless interfacing with 2.5 V, 3.3 V, and 5 V devices through configurable voltage-reference and PCI-compliant I/O standards. Typical applications include telecommunications line-card glue logic, industrial control and factory-automation backplanes, test-and-measurement instrumentation front-ends, PCI bridge prototyping, image and video pipeline prototyping, and low-volume ASIC replacement designs that benefit from embedded memory and the FLEX 10KE's high I/O count. Designers should remember that FLEX 10KE devices are SRAM-based, requiring a configuration ROM on the board for power-up loading, and the exposed thermal pad of the 240-pin RQFP must be soldered to a sufficiently large copper pour to meet the device's thermal dissipation envelope under continuous switching loads. This page synthesizes distributor pricing across 10 channels, drop-in FLEX 10KE alternatives in the same 240-pin RQFP footprint, and practical design notes that the manufacturer datasheet alone does not provide, including speed-grade trade-offs and configuration-ROM selection guidance.
EPF10K20RC208-3 - FLEX 10K FPGA, 20K Gates, 147 I/O, RQFP-208 | Intel
The Intel (formerly Altera) EPF10K20RC208-3 is a member of the FLEX 10K family of SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 20,000 typical gates and 1,152 logic elements in a 208-pin RQFP (Power Quad Flat Pack) package with exposed thermal pad. Speed grade -3 indicates the device is specified for a propagation delay tier suitable for up to 125 MHz internal operation, fabricated on a 5V, 0.42 µm CMOS process with 4-input look-up tables (LUTs) and embedded array blocks (EABs) for on-chip memory. The device provides 147 user I/O pins and 12,288 bits of embedded SRAM for distributed buffering. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit whose logic function is defined after manufacture by the end user. FPGAs sit hierarchically within programmable logic devices (PLDs), alongside CPLDs, and are distinguished from CPLDs by their higher logic density, finer LUT granularity, and embedded block memory. The FLEX 10K family was Altera's first device family to integrate embedded array blocks (EABs) of SRAM memory alongside the logic array, creating a system-on-a-programmable-chip (SOPC) platform. Key features of the EPF10K20RC208-3 include 144 Logic Array Blocks (LABs) each containing 8 Logic Elements, configurable I/O standards supporting 5V TTL/CMOS interfaces, an in-system programmability (ISP) interface via the serial configuration EPROM, and built-in JTAG boundary-scan test (IEEE 1149.1 BST) support. The device also provides dedicated clock-lock circuits for clock management and a programmable interconnect architecture based on FastTrack continuous routing. Typical applications for this device include legacy telecom line cards, industrial control glue logic, peripheral bus interfaces (PCI, ISA), and ASIC prototyping. Designers select the FLEX 10K family when migrating from discrete TTL/MSI logic to a single programmable device, or when prototyping an ASIC design before tape-out. When designing with this part, ensure 5.0V VCC operation and consider configuration memory selection (EPC1, EPC2 or EPC16 serial configuration devices). Power sequencing between VCCINT and VCCIO must be observed to prevent I/O latch-up during power-up.
EPF10K20RC208-3N - FLEX 10K FPGA 20K Gates 208-BFQFP | Intel
The Intel (Altera) EPF10K20RC208-3N is a FLEX-10K family Field-Programmable Gate Array (FPGA) fabricated on a 0.42 µm CMOS process, integrating 20,000 typical gates, 1,152 logic elements (LEs), 144 logic array blocks (LABs), and 12,288 bits of embedded RAM in a 208-pin BFQFP exposed-pad package. According to the verified distributor listings, this part provides 147 user I/O pins, a maximum internal operating frequency of 125 MHz, and supports a 5V core supply (4.75 V to 5.25 V). It belongs to the -3 speed grade and ships in lead-free, surface-mount 208-BFQFP. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit that can be configured by the customer after manufacture to implement arbitrary digital logic. Architecturally, an FPGA sits within the broader hierarchy of programmable logic: programmable logic device (PLD) -> complex PLD (CPLD) -> FPGA -> SoC FPGA. The FLEX 10K family in particular pioneered the embedded array block (EAB) concept, allowing blocks of on-chip SRAM to be used as RAM, ROM, or multiplier functions, which was revolutionary for the late-1990s era. Key differentiating specifications of the EPF10K20RC208-3N include 144 LABs organized across the FLEX 10K interconnect fabric, 12,288 total RAM bits distributed in EABs, and 147 I/O pins supporting multiple I/O standards of that generation. The 208-BFQFP package with exposed pad provides thermal dissipation suitable for industrial/commercial operating ranges. From an architectural standpoint, the FLEX 10K family employs a continuous routing fabric called the FastTrack Interconnect, with each LE containing a 4-input look-up table (LUT), a programmable flip-flop, and dedicated carry-chain logic. The EABs provide dual-port RAM capability and configurable widths from 256x8 to 2048x1, enabling efficient on-chip memory implementations. Typical applications for the EPF10K20RC208-3N include glue logic for telecommunications backplane designs, industrial control system prototyping, PCI bus interface bridges, and legacy embedded computing platforms that required mid-density programmable logic at 5V tolerance. The part is also commonly found in test equipment and data acquisition front-ends of that era. Designers should note that the EPF10K20RC208-3N is in production but is widely regarded as a legacy/legacy-supported part; new designs should consult the Altera/Intel product longevity statement. Configuration is performed via the classic Altera ByteBlaster or BitBlaster download cables, and the legacy MAX+PLUS II development toolchain supports this device natively. This page synthesizes distributor availability, drop-in compatible FLEX 10K variants in the same 208-RQFP footprint, and practical design notes not consolidated in any single manufacturer document.
EPF10K20RC208-4 - FLEX 10K FPGA, 20K Gates, 208-RQFP | Intel/Altera
The Intel (formerly Altera) EPF10K20RC208-4 is a member of the FLEX 10K family of embedded programmable logic devices, delivering 20,000 typical gates (10,000 logic gates) and 1,152 logic elements in a 208-pin RQFP package with exposed pad. It operates on a 5V supply at a maximum internal frequency of 125 MHz using 0.42 µm CMOS process technology, and provides 147 user I/O pins for system-level integration. What is a FLEX 10K FPGA? The FLEX 10K family is a hierarchical SRAM-based programmable logic family that combines a logic array with an embedded array block (EAB) for on-chip RAM and ROM. Within the broader taxonomy it is an FPGA (Field-Programmable Gate Array), a sub-class of programmable logic devices (PLD), which itself belongs to the semiconductor IC family of digital logic. FLEX 10K devices target high-density, system-on-a-programmable-chip (SOPC) integration in a single device, replacing multiple discrete logic and memory components with one configurable chip. Key features of the EPF10K20RC208-4 include a propagation delay of 0.4 ns, 12,288 typical RAM bits distributed across embedded array blocks, an operating temperature range of 0 °C to +70 °C (commercial grade), and PCI-compliant I/O buffers. The -4 speed grade is one of the faster bins offered within the FLEX 10K family for this die and package combination, giving designers extra timing margin for state-machine and datapath paths that do not require the higher-grade -3 or -2 bins. The 208-RQFP (also written 208-BFQFP) package places the device in the same socket as the rest of the EPF10K20 family, enabling reuse of existing PCB footprints. Typical applications include telecommunications line cards, industrial control and instrumentation, glue-logic replacement for ASIC prototyping, PCI interface bridging, and bus-interconnect multiplexing. The 5V I/O compatibility of the FLEX 10K family makes it attractive for legacy 5V system buses where newer 3.3V-only FPGAs cannot directly connect without level shifters. When designing with the EPF10K20RC208-4, allow at least one heat-spreading copper pour under the exposed pad of the 208-RQFP package, since the device can dissipate several hundred milliwatts at full toggle rate. Altera's MAX+PLUS II and Quartus development flows both support the EPF10K20 family, allowing reuse of legacy design files.
EPF10K20RC208-4N - FLEX 10K FPGA, 20K Gates, 208-RQFP | Intel
The Intel (formerly Altera) EPF10K20RC208-4N is a member of the FLEX 10K family of embedded programmable logic devices (EPLDs) packaged as a Field-Programmable Gate Array (FPGA) with 20,000 typical gates, 1,152 logic cells, 144 Logic Array Blocks (LABs), and 12,288 bits of embedded memory. It is housed in a 208-pin RQFP (Plastic Quad Flat Pack with exposed pad) package measuring 28 x 28 mm, providing 147 user I/O pins. Speed grade -4 indicates a propagation delay of approximately 0.6 ns per logic element. The device operates from a single 5 V nominal supply (4.75 V to 5.25 V) and is offered in a commercial 0 to 70 °C temperature range. A FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit that can be configured by the customer or designer after manufacturing. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs) and are widely used for digital logic prototyping, glue logic, signal processing, and hardware acceleration. The FLEX 10K family specifically introduced Look-Up Table (LUT)-based logic combined with embedded array blocks (EABs) that implement RAM, ROM, and FIFO functions, bridging the gap between earlier PLDs and modern SRAM-based FPGAs. Key features include 147 user I/Os, 12 EABs for memory implementation, SRAM-based configuration cells, in-system programmability via the ByteBlaster or JTAG interfaces, and support for multi-volt I/O standards including 5.0 V, 3.3 V, and 2.5 V with proper configuration. The 'N' suffix indicates lead-free / Pb-free construction consistent with RoHS requirements. The exposed thermal pad on the 208-BFQFP package aids heat dissipation in moderate-power designs. From an architectural standpoint, the EPF10K20RC208-4N uses 0.42 µm CMOS process technology with four-input LUTs, dedicated carry chains for arithmetic, and a continuous interconnect fabric routed across LABs. Configuration data is stored in SRAM cells, allowing unlimited re-programmability, which is essential for design iteration and field upgrades. The 208-RQFP footprint is the largest QFP variant in this family, maximizing I/O access for parallel interfaces. Typical applications include telecommunications line cards, industrial control glue logic, data-acquisition pre-processing, PCI bridge prototypes, and legacy system emulation where large gate counts and abundant I/O are required. Newer Cyclone or MAX series parts generally supersede this device in new designs, but it remains valuable for maintenance of installed systems. When designing with this device, consider using the Quartus II (legacy) or MAX+PLUS II development environment for synthesis, place-and-route, and bitstream generation. The exposed pad must be soldered to a copper pour for thermal relief and to maintain the mechanical integrity of the fine-pitch RQFP package.
EPF10K20RC240-3 - FLEX 10K FPGA, 20K Gates, 240-PQFP | Intel
The Intel EPF10K20RC240-3 is a member of the FLEX 10K family of SRAM-based FPGAs delivering 20,000 typical gates (12,288 logic elements / 1,152 LAB cells) in a 240-pin Power Quad Flat Pack (PQFP / RQFP / BFQFP) exposed-pad package. Operating from a 5V core supply, the -3 speed grade corresponds to a commercial-temperature device with maximum propagation delay around 0.4 ns and internal performance sufficient for 125 MHz state-machine designs. A Field Programmable Gate Array (FPGA) is a programmable logic device that uses look-up tables (LUTs), configurable logic blocks (CLBs), and a programmable interconnect matrix to implement arbitrary digital logic. FPGAs sit in the broader hierarchy of programmable logic devices (PLDs) alongside CPLDs and one-time-programmable (OTP) arrays, and they occupy the high-density end of that hierarchy. The FLEX 10K family is Intel's (formerly Altera's) second-generation embedded-array family, combining logic fabric with embedded array blocks (EABs) intended for on-chip memory, ROM, or multiplier functions, enabling system-on-a-programmable-chip (SOPC) integration. Key features include 189 LABs, 12288 logic elements (LEs), 1152 dedicated flip-flops, 470 user I/O pins, in-system programmability through the IEEE 1149.1 JTAG interface, multi-voltage I/O support for interfacing to 5V, 3.3V, and 2.5V rails, and an embedded array block (EAB) architecture for efficient on-chip memory. The exposed thermal pad on the RQFP-240 package provides a low-thermal-resistance path for heat extraction in continuous-duty designs. The architecture is built on a 0.42 µm CMOS process with five layers of metal interconnect. The Look-up Table (LUT)-based combinational path feeds a programmable register that can be configured as D, T, JK, or SR, and carry-chain logic accelerates wide arithmetic operations. Embedded Array Blocks (EABs) provide 2 Kbits of dual-port RAM each and can be cascaded to implement FIFOs, ROMs, or small DSP kernels without consuming general-purpose logic. Typical applications include legacy telecom line cards, industrial control and factory-automation backplanes, military and avionics retrofits, ASIC prototyping, and glue-logic replacement on 5V-tolerant backplanes. The 240-pin PQFP footprint is compatible with many 1990s-era designs, simplifying field upgrades of installed equipment. When designing with the EPF10K20RC240-3, plan for an external configuration PROM (EPC2 or EPC8) on older boards or use the JTAG port for in-system configuration during prototyping. The 5V VCCINT requirement makes the FLEX 10K family incompatible with modern 1.8V/2.5V FPGA boards without level shifting. This page synthesizes distributor stock, parametric drop-in alternatives, and design notes not present in the manufacturer datasheet, giving procurement and design engineers a single source for evaluating this mature FLEX 10K device.
EPF10K20RC240-3N - 20K-Gate FLEX 10K FPGA, 240-RQFP | Altera
The Altera (Intel) EPF10K20RC240-3N is a FLEX 10K-series embedded programmable logic device (EPLD) delivering 20,000 usable gates, 1,152 logic cells, and 189 user I/Os in a 240-pin RQFP (RQFP-HFQFP) package with exposed pad. It is fabricated on a 0.42 µm CMOS process and operates from a 5 V supply with a 125 MHz internal performance rating and a -3 speed grade. FLEX 10K is the first family to combine embedded array blocks (EABs), which are dual-port RAM blocks usable as FIFOs, ROM, or RAM, with a fine-grained Look-Up Table (LUT) logic fabric. An EAB can implement up to 2,048 bits of memory plus optional registered outputs, while surrounding Logic Array Blocks (LABs) deliver combinatorial and sequential logic. The architecture is positioned between classic PLDs and modern SRAM FPGAs, providing a system-on-a-programmable-chip (SOPC) integration path that simplified glue-logic and bus-interface designs in the late 1990s and early 2000s. Key features include 144 LABs, 12,888 typical logic capacity, 189 programmable user I/O pins, multi-volt I/O support (5.0 V PCI-compliant, 5.0 V tolerant), JTAG-based in-system programmability via ByteBlaster/MasterBlaster/ByteBlasterMV cables, and built-in Joint Test Action Group (JTAG) boundary-scan. The -3 speed grade reflects AC performance at commercial temperature (0 °C to 70 °C). The device is targeted at glue logic, PCI bus interfaces, peripheral bridging, and embedded memory (FIFO/dual-port RAM) consolidation on a single chip. Typical applications include PCI controller/peripheral interfaces, asynchronous-transfer-mode (ATM) and telecom glue logic, peripheral bridging in embedded CPU boards, DSP co-processors, and pre-existing 5 V industrial platforms. Its 5 V tolerance simplifies integration with legacy 5 V logic without external level shifters. The 240-RQFP package offers a JEDEC-standard gull-wing footprint compatible with the FLEX 10K family, easing board layout for upgrades and form-factor-compatible variants. Designers should note that EAB blocks must be configured to match the chosen memory mode and width; unused EABs can be left disabled. Combined EAB + LAB usage reduces total logic available for general LUT-based design, so early floorplanning and Quartus (or MAX+PLUS II) resource estimation is recommended before commit.
EPF10K20RC240-4 - FLEX 10K FPGA 20K Gates 240-BFQFP | Intel
The Intel (formerly Altera) EPF10K20RC240-4 is a member of the FLEX 10K family of embedded programmable logic devices (PLDs), delivering approximately 20,000 usable gates in a 240-pin BFQFP (RQFP) exposed-pad package. The device integrates 1,152 logic elements across 144 LABs (logic array blocks) and offers 189 user I/O pins, providing system-on-a-programmable-chip (SOPC) integration in a single device. It is fabricated on a 0.42 µm CMOS process and operates from a 5 V supply with industrial 0 °C to 70 °C temperature support. An FPGA (Field Programmable Gate Array) is a type of integrated circuit containing an array of programmable logic blocks, interconnect, and I/O cells that can be configured by the customer after manufacturing to implement arbitrary digital logic functions. FPGAs sit hierarchically below ASICs and above standard logic in flexibility-vs-cost, and the FLEX 10K family specifically pioneered embedded array blocks (EABs) for on-chip SRAM/ROM, enabling system-on-chip integration of logic plus memory in one device. Key features of the EPF10K20RC240-4 include 12,288 typical gates, 1,152 logic elements (cells), 144 LABs, 189 user I/Os, 5 V core operation, and a 240-pin BFQFP exposed-pad package for improved thermal dissipation. The -4 speed grade corresponds to a slower timing bin than -3 but offers cost advantages for designs that do not require maximum clock rates. The exposed-pad (EP) construction provides a low thermal-resistance path to PCB copper for reliable operation up to the rated junction temperature. Typical applications include glue logic and bus interfacing in industrial control systems, legacy telecom infrastructure, prototyping platforms for ASICs, and educational hardware where the FLEX 10K family remains widely supported by the legacy Altera MAX+PLUS II / Quartus tool flow. The 189 I/O count is well matched to peripheral-rich embedded designs. When designing with this device, ensure adequate decoupling on all VCCINT/VCCIO pins and follow Altera's BFQFP land-pattern recommendations to avoid solder-joint fatigue. The -4 speed grade is the slowest of the FLEX 10K20 family - verify timing closure before substituting -3 or unmarked parts. This page synthesizes distributor pricing, drop-in alternatives within the FLEX 10K family, and practical design notes not aggregated in any single manufacturer datasheet.
EPF10K20RI208-4 - FLEX 10K FPGA, 20K Gates, 208-Pin RQFP | Altera
The Intel (formerly Altera) EPF10K20RI208-4 is a member of the FLEX 10K family of Field-Programmable Gate Arrays (FPGAs) integrating approximately 20,000 typical gates with 1,152 logic elements (LEs), 12,288 bits of embedded SRAM and 144 LABs in a 208-pin RQFP (Power Quad Flat Pack) exposed-pad package. According to the Altera FLEX 10K datasheet family, this member supports up to 147 user I/O pins and operates from a 5 V supply at up to 125 MHz internal performance using a 0.42 µm CMOS SRAM process. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs), programmable interconnect and I/O cells that the designer programs after manufacture. FPGAs sit hierarchically above Application-Specific Integrated Circuits (ASICs) and microcontrollers in the digital logic landscape: they provide ASIC-class performance and parallelism while retaining the ability to be re-programmed in the field. The FLEX 10K series was Altera's first embedded-memory SRAM-based FPGA family, pioneering the look-up-table (LUT) plus embedded-array-block (EAB) architecture that influenced later families such as APEX, Cyclone and the modern Intel Cyclone/Agilex lines. Key features of the EPF10K20RI208-4 include 1,152 logic elements distributed across 144 Logic Array Blocks, 12 Kbits of true dual-port SRAM realized as Embedded Array Blocks, 147 usable I/Os, low-power CMOS technology, FastTrack Interconnect for predictable timing closure, and 100% functional test coverage at the factory. The "-4" speed grade designates the slowest (most conservative timing) of the FLEX 10K grades, giving the best timing margin in return for lower Fmax. The "I" pin-suffix marks the industrial temperature range (–40 °C to +85 °C), and "R" denotes the RQFP package family. Architecturally, FLEX 10K devices combine a sea-of-LABs fabric with column-based EAB memory; each LAB contains 8 LEs and each LE a 4-input LUT plus a programmable register. The FastTrack continuous routing structure delivers fast, predictable interconnect delays that simplify static timing closure compared with segmented routing architectures of competitor families of the era. Typical applications for the EPF10K20RI208-4 include telecommunications glue logic, industrial control and factory automation controllers, prototyping for ASIC emulation, DSP pre/post-processing pipelines, PCI bus interface bridges, and embedded control subsystems where moderate logic density and on-chip SRAM suffice. The 208-pin RQFP footprint makes it suitable for through-hole and socketed legacy designs where BGAs would be impractical. When designing with this device, remember that the FLEX 10K family requires a 5 V supply and a separate configuration EPROM (typically EPC2) loaded via the serial or parallel passive-serial configuration scheme. JTAG boundary-scan testing is supported via the IEEE Std 1149.1 (JTAG) interface for in-system programming and board test. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical legacy-design notes not found in the original manufacturer datasheet.
EPF10K20RI208-4U - FLEX 10K FPGA, 20K Gates, 208-Pin RQFP | Altera
The Altera EPF10K20RI208-4U is a member of the FLEX 10K family of Embedded Programmable Logic Devices, featuring 20,000 typical gates, 1,152 logic elements (LEs), 144 Logic Array Blocks (LABs), and 12,288 bits of embedded SRAM in a 208-pin PowerQuad-4 (RQFP) surface-mount package. Built on a 0.42 µm CMOS SRAM process, the device operates from a 5 V core supply with MultiVolt I/O supporting 3.3 V and 5.0 V interfaces. The integrated FastTrack Interconnect continuous routing fabric delivers predictable interconnect delays, while dedicated input registers, embedded memory, and a low-skew clock tree simplify glue-logic and datapath integration. A field-programmable gate array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs/LABs), programmable interconnect, and configurable I/O cells that can be re-programmed in the field to implement arbitrary digital logic. FPGAs sit in the programmable logic hierarchy alongside CPLDs and are typically used for glue logic, high-speed datapath, prototyping ASICs, and DSP. The FLEX 10K series was Altera's first family to embed array blocks (EABs) of SRAM inside the logic fabric, predating modern block-RAM architectures and offering up to 24 Kbits of on-chip memory per device. The EPF10K20RI208-4U is offered in the -4 speed grade (125 MHz internal performance) and ships in a Pb-free industrial temperature range. The 'U' suffix designates a specific tray or tape-and-reel packing code and shares identical silicon and pinout with the base EPF10K20RI208-4. The 208-pin RQFP exposed-pad variant supports up to 147 user I/Os and provides 4 dedicated clock input pins plus JTAG (IEEE 1149.1) boundary-scan testability. Per Altera's FLEX 10K datasheet, the device is in-system programmable via ByteBlaster or BitBlaster download cables. Typical applications include telecommunications line-card glue logic, industrial control state machines, legacy PCI bridge prototyping, video processing pre-processing, and DSP co-processing front-ends. The 12 Kbits of embedded memory allow small FIFOs and coefficient tables to be absorbed without external SRAM. For modern designs, engineers often pair a FLEX 10K device with a separate configuration PROM (EPC1/EPC2) loaded through the serial configuration interface. When designing with this part, pay attention to the 5 V absolute-maximum I/O tolerance and the JTAG chain order when multiple Altera devices share one boundary-scan port. Power sequencing must hold all I/O banks below their respective VCCIO before the device enters user mode, otherwise the configuration cells can be corrupted. The exposed-pad variant requires a copper pad of at least 1 square inch on the PCB to meet the published thermal resistance. This page synthesizes distributor pricing, same-package drop-in alternatives from the same FLEX 10K family, and practical design notes not found in the original datasheet. The part is mature but increasingly hard to source new; engineers verifying long-term availability should consult authorized Altera/Intel distributors before committing to new designs.
EPF10K20RI240-4 - FLEX 10K FPGA, 20K Gates, 240-Pin RQFP | Altera
The Altera (Intel) EPF10K20RI240-4 is a member of the FLEX 10K family of SRAM-based Field-Programmable Gate Arrays (FPGAs) fabricated on a 0.42 µm CMOS process, delivering approximately 20,000 usable gates organized into 1,152 logic cells and 144 logic array blocks (LABs) with 12,288 RAM bits. It is offered in a 240-pin RQFP (Power/QFP Quad Flat Pack) package with exposed pad, providing 189 user I/O pins, a maximum internal operating frequency of 125 MHz, and 5 V core / I/O supply. 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 that the designer can re-program after manufacture to implement arbitrary digital logic. FPGAs sit hierarchically between CPLDs and ASICs/SoCs, and the FLEX 10K family was Altera's first family to embed dedicated array blocks (EABs) for on-chip synchronous RAM and ROM, advancing the architecture beyond simple glue-logic replacement. Key features include in-system reconfigurability via SRAM configuration memory, support for 5 V PCI compliance, JTAG boundary-scan (IEEE 1149.1) for board test, built-in EAB blocks for 2 Kbit RAM/ROM each, and tri-state buffer on every I/O pin. The 240-pin RQFP footprint offers generous PCB escape routing and is widely supported by legacy design tools including Altera MAX+PLUS II and Quartus (legacy versions). The FLEX 10K architecture combines a fine-grained logic fabric with coarse-grained embedded array blocks (EABs), giving designers both efficient random logic and high-density memory in a single die. Look-up tables (LUTs) implement the combinational logic, while the EABs provide synchronous memory with user-configurable width/depth, useful for FIFOs, ROM lookups, and DSP coefficient storage. Typical applications include industrial control logic, telecommunications glue logic, glue logic for legacy 5 V microcontroller systems, PCI bus interface controllers, and prototyping of larger ASIC designs. The 5 V tolerance also makes it suitable for replacing older TTL/CMOS discrete logic in modernization programs. When designing with this part, observe the 5 V supply rail and provide a clean decoupling network of 0.1 µF and 10 µF capacitors near every VCC/VCCIO pin pair. Configuration via the dedicated serial or parallel EPROM interface must be respected; modern MAX 10 or Cyclone devices are recommended for new designs, but the EPF10K20RI240-4 remains a drop-in solution for maintaining existing production. This page synthesizes distributor pricing, same-package drop-in FLEX 10K alternatives, and practical design notes not aggregated on any single manufacturer or distributor page.
EPF10K20TC144 - FLEX 10K FPGA, 20K Gates, 144-TQFP | Intel
The Intel (formerly Altera) EPF10K20TC144 is a member of the classic FLEX 10K family of Field Programmable Gate Arrays (FPGAs), delivering approximately 20,000 typical gates and 1,152 logic elements in a 144-pin Thin Quad Flat Pack (TQFP) package. It is part of the industry's first embedded array family and integrates a 6,144-bit Embedded Array Block (EAB) that can be configured as memory, multipliers, or specialized logic functions. The device operates at 5V core and supports user I/O counts of 102 with 144-LAB architecture. An FPGA (Field Programmable Gate Array) is a type of integrated circuit that contains an array of programmable logic blocks and interconnect pathways that can be configured by the end user to implement custom digital logic functions. FPGAs sit in the broader hierarchy of programmable logic devices (CPLD -> FPGA -> SoC FPGA) and semiconductor ICs, offering higher logic density and richer feature integration than CPLDs, while remaining more flexible than fixed-function ASICs. The FLEX 10K series was historically significant as one of the first devices to embed SRAM-based look-up tables alongside dedicated memory blocks, an architecture that became foundational to all modern FPGAs. Key features of the EPF10K20TC144 include 1,152 logic elements distributed across 144 Logic Array Blocks (LABs), 12 Embedded Array Blocks providing up to 24,576 bits of RAM, and 102 user I/O pins. The device supports in-system programmability via the Altera ByteBlaster or BitBlaster interfaces through a dedicated JTAG chain, allowing rapid design iteration. Operating voltage is 5V, and the speed grade options (typically -3 or -4) determine maximum toggle frequencies of approximately 125 MHz. The architecture combines a fine-grained logic fabric of 4-input look-up tables (LUTs) with coarse-grained EABs that can implement dual-port RAM, ROM, FIFO buffers, or arithmetic functions in a single block. This heterogeneous mix makes the FLEX 10K family well-suited to designs requiring both glue-logic and moderate on-chip memory, such as glue logic for microprocessors, custom peripheral controllers, and DSP pre-/post-processing. Typical applications include glue-logic replacement for microprocessors and DSPs, custom interface bridging (e.g., PCI-to-local bus bridges), telecommunications line-card controllers, and industrial control logic. The 144-TQFP package supports surface-mount assembly and is widely accepted by both prototyping and production lines. Designers should note that this part is mature and may carry an NRND (Not Recommended for New Designs) lifecycle status. A key design consideration is that the FLEX 10K family requires a 5V supply and uses SRAM-based configuration, meaning the design must be loaded from an external EPROM, flash, or microcontroller on every power-up. This contrasts with Antifuse-based competitors like the Xilinx XC4000 series, which are one-time programmable but offer faster wake-up. Designers migrating from the EPF10K20TC144 to newer Cyclone or MAX families should plan for I/O voltage and configuration scheme changes. This page synthesizes distributor availability data, FLEX 10K family cross-reference options, and practical migration guidance not found in a single datasheet source.
EPF10K20TC144-3 - FLEX 10K FPGA 20K Gates 144-TQFP | Intel
The Intel EPF10K20TC144-3 is a member of the classic FLEX 10K family of SRAM-based FPGAs, providing approximately 20,000 usable gates and 1,152 logic elements in a 144-pin TQFP surface-mount package. It is built on a 0.42 micrometer CMOS process, operates from a 5 V supply, and is rated for commercial temperature (0 to 70 degrees C) applications. The device integrates an embedded array block (EAB) architecture that delivers system-on-a-programmable-chip (SOPC) capability for glue-logic, bus-interface, and state-machine designs. An FPGA (Field Programmable Gate Array) is a programmable logic device that allows engineers to define custom digital circuits after PCB fabrication. FPGAs sit in the programmable logic hierarchy between simple PLDs and high-end ASICs, offering a balance of density, I/O flexibility, and non-recurring engineering cost. The FLEX 10K series was among the first to embed dedicated RAM blocks (EABs), enabling single-chip implementation of registers, FIFOs, and small memory subsystems. Key features include 102 user I/O pins, 144 logic array blocks, 12 embedded array blocks totaling 24,576 RAM bits, and a maximum internal operating frequency around 125 MHz. The part supports in-system programmability through a serial configuration interface, allowing field firmware updates without removing the device from the board. The TQFP-144 package offers a 1.0 mm lead pitch suitable for multilayer PCBs and standard SMT assembly lines. Typical applications include legacy telecom and industrial controllers, PCI and ISA bus bridges, glue-logic replacement for discrete TTL, custom peripheral interfaces for embedded microprocessors, and prototyping platforms for ASIC emulation. The wide 5 V tolerance and abundant I/O count make it well suited to industrial backplane designs where 3.3 V parts are not desired. When designing with this part, note that the FLEX 10K family uses 5 V VCCIO and VCCINT, and the configuration EEPROM must be a compatible EPC1 or EPC2 device. Designers should also confirm that the chosen speed grade (-3) meets the target fMAX for critical paths; faster -4 speed grades are available within the same package for timing closure. This page synthesizes distributor stock levels, drop-in alternatives within the FLEX 10K family, and practical design notes not consolidated in the original manufacturer datasheet.
EPF10K20TC144-3N - FLEX 10K FPGA 20K Gates 102 I/O TQFP-144 | Intel
The Intel EPF10K20TC144-3N is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs), delivering approximately 20,000 gates, 1,152 logic elements (cells), and 12,288 bits of embedded memory in a 144-pin TQFP (LQFP) surface-mount package with 102 user I/O pins. Fabricated on a 0.42 µm CMOS process and rated for 125 MHz internal operation at 5 V core, the -3N speed/packaging suffix indicates a commercial temperature grade with the standard performance tier. A Field Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and dedicated I/O cells that can be reconfigured by the end user after manufacture. The FLEX 10K family belongs to the broader hierarchy of programmable logic devices (PLDs), positioned between simple Complex Programmable Logic Devices (CPLDs) and high-density SRAM-based FPGAs. FLEX 10K parts integrate Look-Up Table (LUT)-based logic with Embedded Array Blocks (EABs) that provide on-chip SRAM, enabling single-chip implementation of wide datapaths, glue logic, and small state machines without external memory. Key specifications of the EPF10K20TC144-3N include 1,152 logic elements distributed across 144 Logic Array Blocks (LABs), 12,288 RAM bits, 102 maximum user I/O pins, and operation from a 5 V supply. The device supports in-system configuration via the Altera (now Intel) Quartus/MAX+PLUS II toolchain through a passive serial or JTAG interface. PCI-compliant I/O is supported on selected banks, allowing direct interface to 5 V PCI buses without external buffering. The FLEX 10K architecture combines a fine-grained, SRAM-based logic fabric with Embedded Array Blocks (EABs) that can implement RAM, ROM, or multiplier functions. Each EAB provides 2,048 bits of memory configurable as 256x8, 512x4, 1024x2, or 2048x1, allowing efficient implementation of FIFOs and small lookup tables. Continuous FastTrack interconnect routes signals across the die with predictable delays, simplifying timing closure at the -3 speed grade. Typical applications include telecommunications line cards, industrial control glue logic, PCI bus interfaces, prototyping platforms for ASIC migration, and legacy system upgrades where 5 V-tolerant I/O and embedded memory are required. The 144-pin TQFP package supports hand-soldering and socket-based prototyping, which remains valuable in maintenance and low-volume production. When designing with this device, note that configuration data must be loaded from an external EPROM, Flash, or microcontroller on every power-up because the SRAM-based fabric is volatile. Plan JTAG or passive-serial header access for in-field reprogramming, and observe the 5 V VCCINT/VCCIO supply requirements which are not directly compatible with modern 3.3 V or 1.8 V logic without level translation. This page synthesizes distributor stock, drop-in alternatives from the same FLEX 10K family, and practical design notes that extend the manufacturer datasheet with cross-reference and lifecycle information.
EPF10K20TC144-4 - Flex 10K FPGA, 20K Gates, 144-LQFP | Intel
The Intel (formerly Altera) EPF10K20TC144-4 is a member of the FLEX 10K family of SRAM-based Field-Programmable Gate Arrays (FPGAs) delivering 20,000 typical gates, 1,152 logic elements, 144 logic array blocks (LABs), and 12,288 bits of embedded memory, housed in a 144-pin LQFP (TQFP) surface-mount package. The "-4" speed grade designates a commercial temperature range (0C to 70C) at 5V nominal supply with a maximum operating frequency of approximately 125 MHz, optimized for cost-sensitive, non-timing-critical designs. A Field-Programmable Gate Array (FPGA) is a reconfigurable semiconductor device containing an array of programmable logic blocks, interconnect, and I/O cells that the user defines after manufacture via a hardware description language (HDL) and a vendor toolchain. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs), occupying the high-density tier above simple PLDs (SPLDs) and complex PLDs (CPLDs), and below ASICs in unit cost but above in flexibility and time-to-market. The FLEX 10K family was one of the first architectures to integrate dedicated embedded array blocks (EABs) for on-chip RAM/ROM, foreshadowing modern FPGA hard-IP blocks. Key features include 102 user I/O pins (some sources list up to 122 user I/Os depending on configuration), 0.42 um CMOS process technology, 5 V single-supply operation (4.75 V to 5.25 V), 0.4 ns propagation delay per logic element, and in-system programmability via the Altera ByteBlaster or BitBlaster configuration interface. The embedded array blocks (EABs) provide up to 24 Kbits of true dual-port RAM, useful for FIFOs, look-up tables, and small state machines without consuming general-purpose logic. Typical applications include glue logic replacement, communication bridge interfaces, industrial control prototypes, legacy system emulation, low-volume ASIC substitution, and educational/development boards. The wide 5V tolerance and large gate count historically made FLEX 10K parts popular for prototyping bus interfaces (ISA, PCI) and parallel DSP pipelines. When designing with this device, ensure your configuration PROM (EPC2 or compatible) is correctly sized for the bitstream and that the JTAG chain includes boundary-scan compliance for production test. Note that this part is now mature/legacy and Altera/Intel last-time-buy support has ended for many FLEX 10K variants; verify long-term availability before committing to new designs. This page synthesizes distributor pricing, pin-compatible legacy alternatives, and practical migration notes not found in the original datasheet - including guidance on transitioning to Cyclone-series FPGAs for new designs while preserving the existing 144-LQFP PCB footprint where possible.
EPF10K20TC144-4N - 20K Gates FLEX 10K FPGA 144-TQFP | Altera
The Altera (now Intel) EPF10K20TC144-4N is a member of the FLEX 10K family of Field-Programmable Gate Arrays (FPGAs) housed in a 144-pin Thin Quad Flat Pack (TQFP) package. It integrates 20,000 equivalent gates with 1,152 logic elements (LEs), 144 Logic Array Blocks (LABs), 12,288 bits of embedded memory, and 102 user I/O pins, operating at a maximum internal frequency of 125 MHz on a 0.42 um CMOS process and a 5V core supply. The FLEX 10K family introduced the industry's first embedded array block (EAB) for on-chip RAM/ROM, making this part suitable for designs requiring both lookup-table logic and distributed memory in a single device. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit that can be reconfigured by the customer after manufacture to implement arbitrary digital logic. FPGAs sit at the apex of programmable logic devices, above simple PLDs and CPLDs, and are widely used for prototyping, glue logic, signal processing, and low-to-medium volume custom digital systems. The FLEX 10K family is one of the early commercial embedded-block FPGA families, combining coarse-grained logic with embedded array blocks (EABs) that can be configured as RAM, ROM, or product-term logic. Key features of the EPF10K20TC144-4N include 20,000 typical gates (63,000 maximum), 1,152 logic elements, 6 EABs, 144 LABs, 102 user I/Os, JTAG-compliant boundary-scan testing (IEEE Std 1149.1), in-system programmability via the ByteBlaster or BitBlaster download cable, and 3.3V/5V PCI-compatible I/O support. The "-4" speed grade targets a 0.4 ns propagation delay class and the "N" suffix denotes lead-free / Pb-free terminal finish. The architecture combines a symmetric logic array for fine-grained logic with embedded array blocks for high-density memory or arithmetic functions. Logic routing uses continuous FastTrack Interconnect with predictable delays regardless of placement, simplifying timing closure on the legacy Altera MAX+PLUS II and Quartus (legacy) design flows. The 5V core supply is unusual by modern standards (current FPGAs predominantly use sub-2V cores), so the EPF10K20TC144-4N is typically paired with 5V-tolerant buses and 5V/3.3V mixed-voltage I/O. Typical applications include industrial glue logic and bus bridges, PCI interface controllers, legacy telecommunications backplane glue, prototyping ASICs, motor control peripherals, and low-volume embedded digital systems. The 102 I/O count and TQFP-144 footprint make it well suited for designs that need many user pins but cannot accommodate fine-pitch BGA packages. When designing with this device, ensure that the Quartus (legacy MAX+PLUS II) tool flow is still available in your environment, as modern Quartus versions do not support FLEX 10K. Plan for a 5V analog supply and consider input clamp diodes for hot-insertion protection. A JTAG chain and dedicated configuration EEPROM (such as the EPC2) are required to load the bitstream at power-up. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, providing a one-stop reference for engineers maintaining or designing in EPF10K20TC144-4N today.
EPF10K20TI144-4 - 20K Gates FLEX 10K FPGA, 144-LQFP | Intel
The Intel (formerly Altera) EPF10K20TI144-4 is a member of the FLEX 10K family of SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering approximately 20,000 equivalent gates and 1,152 logic cells in a 144-pin LQFP (TQFP) package. It is fabricated on a 0.42 µm CMOS process and operates from a 5 V core supply with MultiVolt I/O supporting mixed-voltage interfacing, making it suitable for legacy 5 V system designs as well as 3.3 V peripherals. The device is specified at the -4 speed grade with typical toggle performance near 125 MHz. A Field-Programmable Gate Array (FPGA) is a reprogrammable logic device that combines programmable logic elements, interconnect, and dedicated function blocks such as block RAM, multipliers, or - in the FLEX 10K case - embedded array blocks (EABs). FPGAs occupy a position in the system hierarchy above discrete logic ICs (74-series glue logic) and below ASICs, offering ASIC-like density with the time-to-market advantage of in-system reprogrammability. FLEX 10K was Intel/Altera's first family to integrate embedded array blocks (EABs) for distributed dual-port RAM or ROM, which was a notable architectural step at its introduction. Key features of the EPF10K20TI144-4 include 144 logic array blocks (LABs), 102 user I/O pins, six EABs providing up to 12,288 bits of on-chip memory, and PCI-compliant I/O with slew-rate control and pull-up clamping diodes. The MultiVolt I/O interface allows each bank to operate at a different voltage by tying VCCIO to the desired level. The device supports in-system programming via the serial configuration EPROM (EPC) interface, allowing designers to update firmware in the field without removing the device. The FLEX 10K architecture combines a fine-grained sea-of-LABs structure with coarse-grained EABs for memory and DSP-style functions. Each LAB contains eight logic elements (LEs), each consisting of a 4-input look-up table, a programmable flip-flop, dedicated carry and cascade chains, and LAB-wide control signals. The 5 V tolerant inputs and programmable output slew rates simplify mixed-voltage interfacing with 3.3 V and 5 V buses, while the PCI pull-up clamping diode option enables compliance with the PCI bus electrical specification. Typical applications for the EPF10K20TI144-4 include industrial control, communication bridges, PCI bus interfaces, glue-logic replacement, and prototyping of ASIC designs in telecom, instrumentation, and embedded systems. The 102 user I/Os make it well suited as a peripheral controller in 16/32-bit embedded platforms. When designing with this device, ensure the configuration EPROM and JTAG chain are correctly wired and that VCCINT and VCCIO decoupling is local to each pin. For new designs, note that FLEX 10K is a legacy family approaching end-of-life; users should evaluate modern Cyclone or MAX 10 families for new projects. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers quickly assess the EPF10K20TI144-4 for both legacy support and cross-brand sourcing.