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EP20K400FC672-1XGZ - 400K Gate APEX-20KE FPGA, 502 I/O, 672-FBGA | Intel
EP20K400FC672-1XGZ

EP20K400FC672-1XGZ - 400K Gate APEX-20KE FPGA, 502 I/O, 672-FBGA | Intel

The Intel (formerly Altera) EP20K400FC672-1XGZ is a high-density APEX-20KE Field-Programmable Gate Array (FPGA) in the 672-pin Fine-Pitch Ball Grid Array (FBGA) package, integrating approximately 400,000 system gates with up to 502 user I/O pins. Per the manufacturer product listing, this device belongs to the APEX-20KE family and features the MultiCore architecture combining embedded system blocks (ESBs) for memory and logic fabric. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that uses configurable logic blocks (LUTs), programmable interconnects, and dedicated I/O cells to implement arbitrary digital circuits after PCB assembly. APEX-20KE sits in the hierarchy: APEX-20KE -> APEX 20K family -> programmable logic -> CMOS ASIC-replacement IC. The 2.5V core supply and CMOS process technology place it in the older high-density programmable logic generation, predating modern 28nm/14nm FPGAs but still widely deployed in long-lifecycle industrial and communications equipment. Key features of the EP20K400FC672-1XGZ include 16,640 logic elements/cells, a propagation delay of 2.5 ns, and 212,992 bits of embedded memory. The 672-FBGA package exposes 502 general-purpose I/O pins supporting multiple I/O standards (LVTTL, LVCMOS, PCI, GTL+) per the APEX-20KE datasheet family. The -1 speed grade denotes the slowest commercial speed bin (compared to -2 and -3 grades), trading timing margin for cost. Technically, the APEX-20KE combines look-up-table-based logic elements with embedded system blocks that can be configured as dual-port RAM, ROM, or content-addressable memory. The MultiCore architecture allows the embedded memory and logic fabric to be sized independently for each design, and the deterministic interconnect fabric supports high-speed datapath placement for DSP, telecom, and glue-logic functions. Typical applications include telecommunications backplane glue logic, industrial control and factory automation controllers, network routers and switches, DSP coprocessing, and legacy ASIC replacement in long-lifecycle military and avionics systems. Engineers choose APEX-20KE specifically for designs that must remain bit-identical with installed OEM equipment, where migration to a newer FPGA family would require extensive re-validation. A critical design consideration when using the EP20K400FC672-1XGZ is power-rail sequencing and I/O bank VCCIO configuration - mis-setting bank voltages can cause permanent damage to I/O buffers. Always use Altera Quartus II (legacy) or equivalent programming tools and follow the JTAG configuration sequence in the APEX-20KE handbook. This page synthesizes distributor availability, drop-in APEX-20K family alternatives, and practical design guidance not found in the manufacturer datasheet alone.

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EP20K400FC672-2 - 400K Gates APEX-20K FPGA, 502 I/O | Intel
EP20K400FC672-2

EP20K400FC672-2 - 400K Gates APEX-20K FPGA, 502 I/O | Intel

The Intel (formerly Altera) EP20K400FC672-2 is a high-density APEX-20K Field Programmable Gate Array (FPGA) fabricated on a 0.22 µm CMOS process, delivering 400,000 system gates and 16,640 logic elements in a 672-ball FineLine BGA (FC-FBGA) package. It integrates 502 user I/O pins, 212,992 bits of embedded memory, and operates at up to 200 MHz core frequency from a 2.5 V supply with 2.5 ns propagation delay. An FPGA (Field Programmable Gate Array) is a reprogrammable semiconductor device that combines configurable logic blocks (CLBs), programmable interconnects, and I/O cells on a single die. The APEX-20K family pioneered the MultiCore architecture integrating look-up tables (LUTs), product-term logic, and embedded system blocks (ESBs) for on-chip memory, making it a System-on-a-Programmable-Chip (SOPC) platform. FPGAs sit hierarchically under programmable logic devices (PLD), alongside CPLDs, and above standard logic ICs in the semiconductor taxonomy. Key features of the EP20K400FC672-2 include 1664 Macrocells, 502 maximum user I/O, 2.5 ns pin-to-pin propagation delay (-2 speed grade), embedded SRAM organized via ESBs, MultiVolt I/O supporting multiple interface standards, and a 672-pin FC-FBGA package suitable for high-density surface-mount designs. The device supports in-system programming via the IEEE 1149.1 JTAG interface and is configured from a serial PROM or system memory. The APEX-20K architecture combines four types of logic resources—LUTs for register-intensive functions, product-term logic for wide combinational paths, ESBs for memory and arithmetic, and a high-bandwidth interconnect fabric. With 0.22 µm CMOS technology and 2.5 V core, the EP20K400FC672-2 achieves a balance of density and power efficiency for telecom, networking, and DSP applications. Typical applications include telecommunications infrastructure, high-speed data switching, DSP co-processing, prototyping ASICs, and industrial control systems. The 672-ball BGA package supports high-speed signal integrity required by parallel bus interfaces and LVDS links. When designing with this device, ensure proper decoupling with 0.1 µF and 0.01 µF capacitors near each power pin. Configuration storage via EPC2 or EPC16 serial configuration devices is recommended for production. The device is now in EOL/NRND status—designers of new systems should consider Cyclone or Stratix families. This page synthesizes distributor stock, FPGA family cross-references within the APEX-20K portfolio, and design notes not consolidated in the original Altera datasheet.

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EP20K400FC672-3 - APEX 20K 400K FPGA, 672-FBGA | Altera
EP20K400FC672-3

EP20K400FC672-3 - APEX 20K 400K FPGA, 672-FBGA | Altera

The Altera (Intel Programmable Solutions Group) EP20K400FC672-3 is a member of the APEX 20K family of FPGAs (Field-Programmable Gate Arrays) implementing 400,000 system gates over 16,640 logic elements (cells) with MultiCore architecture. The device is housed in a 672-pin fine-pitch BGA (FBGA) package operating at a 2.5 V core supply, with 502 user I/O pins and propagation delay figures in the 2.5 ns class, making it a high-density programmable platform for SOPC (System-On-a-Programmable-Chip) integration. The -3 speed grade indicates the commercially fastest silicon bin in this family. 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 an engineer can configure post-manufacture to implement arbitrary digital functions. Within the taxonomy, the APEX 20K belongs to the high-density SRAM-based FPGA family, sitting between CPLDs (Complex Programmable Logic Devices) at lower density and ASICs (Application-Specific Integrated Circuits) at higher NRE cost. APEX 20K pioneered the MultiCore architecture that integrates lookup-table (LUT) logic, embedded system blocks (ESBs) for memory and specialized functions, and high-speed interconnect into a single fabric supporting SOPC integration, where a soft processor core, peripherals, and custom logic coexist on one die. Key features of the EP20K400FC672-3 include 16,640 logic elements, 502 user I/Os, MultiCore architecture with embedded system blocks, a 672-pin FC-FBGA (Fine-pitch Chip-scale BGA) package for high pin density, 0.22 µm CMOS process technology, 167 MHz internal performance, and a -3 commercial speed grade. The 672-BGA footprint maximizes I/O escape routing for high-bandwidth designs while consuming compact board area compared to equivalent QFP packages. The APEX 20K architecture combines look-up table logic for combinatorial and registered functions with embedded array blocks (EABs/ESBs) that can be configured as RAM, ROM, or specialized arithmetic pipelines. The MultiCore interconnect is segmented to optimize critical-path delays, supporting 167 MHz operation in pipelined datapaths. Designers targeting the EP20K400FC672-3 typically use the Quartus II or MAX+PLUS II toolchain (legacy support) for synthesis, place-and-route, and timing closure. Typical applications for the EP20K400FC672-3 span telecommunications infrastructure (ASIC prototyping, glue logic, high-speed datapath bridging), industrial control and factory automation (custom protocol conversion, real-time control), DSP front-ends (preprocessing, filtering), and legacy computing interfaces (PCI bridges, memory controllers). The 502 user I/Os and 16,640-cell density target medium-complexity system integration where ASIC NRE cost is not justifiable. When designing with this device, verify that the 672-FBGA land pattern and 2.5 V core supply meet your PCB manufacturing and power-delivery budget. Because the APEX 20K family has been in maintenance/legacy status for many years, plan a lifecycle risk-mitigation path: stock a safety inventory, evaluate Cyclone-series successors for new designs, and confirm your compiler toolchain version supports the device. JTAG programming via ByteBlaster or similar download cables is the standard configuration path. This page synthesizes distributor pricing, drop-in same-package alternatives from the APEX 20K family, and practical design notes not found in the manufacturer datasheet, providing a single decision-grade reference for procurement and engineering teams working with the EP20K400FC672-3.

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EP20K400FC672-3V - 400K Gates APEX 20K FPGA 672-FBGA | Altera
EP20K400FC672-3V

EP20K400FC672-3V - 400K Gates APEX 20K FPGA 672-FBGA | Altera

The Altera (Intel) EP20K400FC672-3V is a member of the APEX 20KC programmable logic device family delivering up to 400,000 system gates with MultiCore architecture that integrates look-up table (LUT) logic, product-term logic, and embedded memory in a single fabric. The device is supplied in a 672-ball FineLine BGA (FC-FBGA, 27x27 mm) and supports an I/O count of 502 pins. Core voltage is 1.71 V to 1.89 V (2.5 V referenced in legacy datasheets for the APEX 20K Vccint rail with separate Vccio banks), and the silicon is fabricated on a 0.22 µm process. Total embedded RAM is 212,992 bits (16640 logic elements / 16,640 cells typical) and the -3 speed grade delivers typical performance up to 167 MHz internal, with a 3.6 ns pin-to-pin delay. An FPGA (Field-Programmable Gate Array) is a programmable logic device containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that engineers can configure after manufacture to implement arbitrary digital logic. FPGAs sit within the broader semiconductor hierarchy as a sub-category of programmable logic devices (PLDs), themselves part of the logic IC family. The APEX 20K family was one of the first PLDs to combine LUT logic with embedded system blocks (ESBs) that double as dual-port RAM, ROM, or CAM, enabling system-on-a-programmable-chip (SOPC) integration. Key features of the EP20K400FC672-3V include 16,640 logic elements (cells), 212,992 bits of embedded memory, 502 user I/O, MultiCore architecture with embedded system blocks, in-system programmability via IEEE 1149.1 JTAG, and 5 V tolerant I/O with PCI-compliant drivers. The device supports up to 167 MHz internal operation and is suitable for high-density glue-logic, bus-interface, and datapath-replacement designs. Typical applications for the EP20K400FC672-3V include telecommunications line-card controllers, high-speed data-path bridge logic, industrial control backplanes, PCI/PCI-X bus interfaces, and legacy ASIC prototyping. Engineers select this part when a large LUT/embedded-memory fabric is required on a single 5 V tolerant device with proven APEX toolchain support. When designing with this device, observe Vccint decoupling per the APEX 20KC datasheet (DS-APEX20K-5.1): use 0.1 µF and 0.01 µF ceramic capacitors close to every Vccint/Vss pair, and provide a minimum of eight 0.2 µF bulk capacitors around the package perimeter. Signal-integrity simulations are recommended above 100 MHz to control simultaneous-switching noise across the 502 I/O. This page synthesizes distributor pricing, drop-in same-package alternatives from the Site MPN list, and practical design notes that are not found on the manufacturer datasheet alone.

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EP20K400FC672-3X - APEX 20K 400K Gates FPGA, 672-BGA | Altera
EP20K400FC672-3X

EP20K400FC672-3X - APEX 20K 400K Gates FPGA, 672-BGA | Altera

The Altera EP20K400FC672-3X is a high-density APEX 20K family Field-Programmable Gate Array (FPGA) housed in a 672-ball Fine-pitch BGA package (FC-FBGA / FCBGA). Built on a 0.22 µm CMOS process, the device integrates approximately 400,000 gates with 16,640 logic cells and 1664 macrocells, supported by MultiCore architecture that combines look-up table (LUT) logic with embedded memory blocks. It provides 502 user I/O pins (496 dedicated I/O lines per the MicrochipUSA listing) and runs from a 2.5 V core supply with 3.3 V/5 V tolerant I/O banks. The -3X speed grade targets a maximum clock frequency of 181.82 MHz with a typical propagation delay of 2.07 ns, making it suitable for high-throughput datapath and bus-interface designs. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit containing configurable logic blocks (CLBs), programmable interconnect, and I/O cells that the designer can program after manufacture using a hardware description language (HDL). FPGAs occupy the middle ground between fixed-function ASICs and software-driven processors: they deliver hardware-level parallelism and deterministic latency while remaining fully re-programmable. APEX 20K is a system-on-a-programmable-chip (SOPC) family combining look-up-table logic with embedded cache logic (CAM) and dual-port RAM, enabling a single chip to host microcontrollers, datapaths, memory, and high-speed interfaces. Key features of the EP20K400FC672-3X include 16,640 logic elements, 1664 macrocells, MultiCore LUT/CAM architecture, 2.5 V core supply, JTAG/IEEE 1149.1 boundary-scan support, in-system programmability via Altera ByteBlaster or MasterBlaster, and a per-pin I/O slew-rate control. The 672-ball FC-FBGA package supports high-density board layouts with controlled-impedance traces for clock distribution and high-speed LVDS/HSTL signaling. Typical applications include telecommunication line cards, high-speed data-acquisition systems, DSP co-processing front-ends, and industrial control backplanes where parallel logic, large embedded memory, and high I/O count are required. The 502-pin I/O budget comfortably accommodates wide memory buses (e.g., 64-bit SDRAM) alongside multiple standard interfaces such as PCI, UTOPIA, or POS-PHY. The 0.22 µm process offers robust 3.3 V/5 V PCI compatibility that newer sub-100 nm FPGAs have abandoned. Designers should note that the APEX 20K family is mature and approaching end-of-life; long-term availability should be verified against Altera/Intel lifecycle notices before committing to new production designs. The 672-ball BGA requires multilayer PCB fabrication with microvia or via-in-pad technology for reliable assembly and controlled-impedance routing. When migrating to newer families, consider Altera Cyclone III/IV/V or Stratix equivalents, although footprint and core-voltage changes will require PCB re-layout.

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EP20K400FC672-4 - APEX 20K FPGA 400K Gates 672-BBGA | Intel
EP20K400FC672-4

EP20K400FC672-4 - APEX 20K FPGA 400K Gates 672-BBGA | Intel

The Intel (formerly Altera) EP20K400FC672-4 is a member of the APEX 20K programmable logic device family, a multi-vendor-architecture (MultiCore) FPGA that integrates look-up table (LUT) logic, embedded system blocks (ESBs) for memory, and I/O elements on a single device. This variant is housed in a 672-ball FineLine BGA (FC) package and is graded for the -4 speed bin (the -4 corresponds to the slowest commercial speed grade in the APEX 20K family, making it suitable for cost-sensitive designs where timing closure is not the primary concern). An FPGA (Field-Programmable Gate Array) is a type of programmable logic device that allows designers to configure digital logic after manufacturing. Within the broader semiconductor taxonomy, FPGAs belong to programmable logic devices -> digital ICs -> integrated circuits. The APEX 20K family pioneered the combination of LUT-based logic and embedded memory in a single fabric, predating the modern Stratix/Cyclone families and serving as a stepping stone to today's heterogeneous SoC FPGAs. The EP20K400FC672-4 delivers up to 400,000 typical gates (roughly 212,992 logic elements per the -1 variant datasheet), 212,992 system gates, 16640 logic elements, and 502 Kbits of embedded memory distributed across the embedded system blocks. Per the verified distributor and datasheet records, the device carries a Moisture Sensitivity Level (MSL) of 3 and a peak reflow rating of 220 C, consistent with surface-mount BGA assembly. Applications for this part span legacy communications infrastructure, industrial control, ASIC prototyping, and glue-logic replacement on legacy boards where the design has been validated against APEX 20K timing models. The 672-pin BGA package supplies abundant user I/O for memory interfaces and parallel bus expansion. Designers working with this part typically rely on the Altera/Intel Quartus II design environment (legacy support). Note that the APEX 20K family has been classified NRND/EOL by Intel in favor of newer Cyclone/Stratix devices, so availability should be verified before starting new designs. The page below combines distributor pricing, equivalent APEX 20K alternatives, and design notes not synthesized in any single manufacturer document.

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EP20K400FC784-1 - APEX 20K 400K-Gate FPGA 784-BGA | Altera
EP20K400FC784-1

EP20K400FC784-1 - APEX 20K 400K-Gate FPGA 784-BGA | Altera

The Altera EP20K400FC784-1 is a member of the APEX 20K family of programmable logic devices, integrating 400,000 gates of logic capacity with up to 212 Kbits of embedded memory in a 784-ball PBGA package. It operates from a nominal 2.5 V core supply (2.375 V to 2.625 V range) and supports a maximum clock frequency of 6.1 GHz, making it suitable for high-throughput parallel processing designs. An APEX 20K device is a fine-grained, multi-vendor architecture (MVAA) PLD that combines look-up table (LUT)-based logic, embedded array blocks (EABs) for memory, and a high-bandwidth interconnect. In the broader taxonomy, the APEX 20K is a high-density FPGA positioned between the older FLEX 10K and the later Stratix families, optimized for data-path and DSP-style functions on a single programmable die. Key features include 212 Kbits of embedded SRAM, four dedicated clock inputs, multiVolt I/O supporting 1.8 V/2.5 V/3.3 V interfaces, JTAG boundary-scan test, and an embedded PLL for clock multiplication and skew management. The device supports in-system configuration via serial or parallel configuration modes using Altera MAX+PLUS II or Quartus design tools. The APEX 20K architecture combines four-input LUTs grouped into Logic Array Blocks (LABs) with EABs that can implement dual-port RAM, ROM, FIFOs, and multiplier functions. This heterogeneous fabric, the first of its kind in the industry when introduced, allows efficient implementation of both control logic and data-path arithmetic on the same device. Designers can allocate logic and memory density independently to optimize silicon utilization. Typical applications include telecommunications line-card processing, ASIC prototyping, high-speed data acquisition front-ends, and DSP co-processing. The combination of high logic density, embedded memory, and flexible I/O made the APEX 20K family a popular platform for telecom infrastructure and test equipment in the early 2000s. When designing with this device, allocate configuration pins carefully: dedicated configuration, JTAG, and clock pins have fixed locations and cannot be repurposed. The 784-ball PBGA package requires a 1.27 mm ball pitch PCB layout with controlled-impedance routing for high-speed I/O. Always consult the APEX 20K datasheet before designing the power decoupling network, as the device has multiple VCC rails (core, I/O banks, PLL). This page synthesizes Altera APEX 20K family specifications, alternative sourcing options, and PCB layout guidance not found in the original manufacturer datasheet. Engineers seeking an EP20K400FC784-1 replacement should review the alternatives section, which lists same-package APEX 20K variants with identical ball maps.

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EP20K400FC784-2 - APEX 20K 400K Gate FPGA, 784-BGA | Altera
EP20K400FC784-2

EP20K400FC784-2 - APEX 20K 400K Gate FPGA, 784-BGA | Altera

The Altera EP20K400FC784-2 is a member of the APEX 20K programmable logic device family, delivering 400,000 system gates in a 784-ball FineLine BGA (FC) package at industrial speed grade -2. Built on a 0.22 µm CMOS SRAM process with embedded multi-time-programmable (but electrically volatile) Look-Up Table (LUT) and Embedded System Block (ESB) architecture, the EP20K400C combines high-density programmable logic with up to 212 Kbits of dual-port RAM distributed across ESBs, all on a single die. The part is part of the broader APEX 20K family, which pioneered the combination of LUT logic and embedded memory blocks that later evolved into modern Stratix-class architectures. An FPGA (Field Programmable Gate Array) is a programmable logic device family that lets engineers implement custom digital logic, register files, FIFOs, RAMs, and arithmetic functions on a single IC after fabrication. APEX 20K sits in the hierarchy: programmable logic -> FPGA -> high-density SRAM-based FPGA -> APEX 20K family. The device is configured at power-up from an external serial or parallel PROM (EPCS / EPC16-class erasable PROMs), and because it is SRAM-based it is re-programmable in-system indefinitely. Key features of the EP20K400C include 400,000 typical system gates (approximately 16,640 logic elements / 3,300 4-input LUTs per family datasheet), 212 Kbits of embedded RAM distributed across ESBs, support for LVTTL, LVCMOS, PCI, SSTL-2, SSTL-3, GTL+, and CTT I/O standards, up to 4 dedicated FastTrack Interconnect rows/columns, and a maximum of 488 user I/O pins in the 784-ball BGA. The device operates from a 2.5 V core and supports MultiVolt I/O interfacing to 3.3 V, 2.5 V, and 1.8 V buses, with hot-socketing capability for live insertion into backplanes. The -2 speed grade places this part in the commercial/industrial performance tier (typical toggling around 100-180 MHz internally, depending on routing and design style). 4-input LUTs feed a fast carry-chain for arithmetic, and the ESBs can be configured as dual-port RAM, ROM, CAM, or small multipliers. JTAG (IEEE 1149.1) boundary-scan testing is supported on every pin, easing board-level test and in-system programming flows. Typical applications include telecom backplane glue logic, industrial automation controllers, custom peripheral bridges (PCI to local bus, UART to FIFO), DSP pre/post-processing pipelines, and prototyping platforms for ASIC emulation. The high gate count also makes it a viable candidate for early-stage ASIC prototyping where design iterations outpace mask turns. When designing with this part, plan for an external configuration PROM (e.g., EPC16 or EPCS64) since the EP20K400C is SRAM-volatile, and budget at least 12-16 layer PCB routing for the 784-ball FC-BGA escape. Decoupling must include a 0.1 µF cap per VCCIO/VCCINT power pin pair plus bulk 47 µF tantalum on each supply rail. Engineers considering migration paths should also evaluate the Stratix II family as the natural successor for new designs, since APEX 20K is no longer recommended for new programs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with engineering detail optimized for sourcing engineers, FPGA architects, and lifecycle-planning procurement teams.

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EP20K400FC784-3 - APEX 20K 400K Gates FPGA, BGA-784 | Intel
EP20K400FC784-3

EP20K400FC784-3 - APEX 20K 400K Gates FPGA, BGA-784 | Intel

The Intel (formerly Altera) EP20K400FC784-3 is a member of the APEX 20K family of programmable logic devices, delivering up to 400,000 typical gates in a 784-ball FineLine BGA (FC) package at speed grade -3. As a MultiCore architecture device, it combines Look-Up Table (LUT) logic, Embedded System Blocks (ESBs) for memory and product-term functions, and a high-bandwidth interconnect fabric on a single die. A Field Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells that can be rewired to implement arbitrary digital circuits after manufacture. Within the broader taxonomy, the EP20K400 belongs to the programmable-logic-device family, which sits under digital logic ICs and, more generally, under Integrated Circuits (ICs) and semiconductors. APEX 20K is Intel/Altera's first MultiCore FPGA architecture, integrating both fine-grain LUT logic and coarse-grain embedded array blocks (EABs/ESBs) for true hardware-software co-design. Key features of the EP20K400 include maximum system gates up to 1,052,000, up to 21,168 logic elements, 212,992 RAM bits distributed across embedded system blocks, 4 PLLs for clock management, and 488 user I/O pins in the FC784 package. Speed grade -3 indicates a commercial-temperature AC performance grade. MultiVolt I/O support (1.8V, 2.5V, 3.3V, 5.0V) lets the device bridge multiple logic levels without external translators. The APEX 20K architecture combines four-input LUT-based logic elements with embedded array blocks (ESBs) that can each implement RAM, ROM, FIFO, or product-term logic. This dual-grain structure allows efficient implementation of wide datapaths (via LUTs) and large memory structures (via ESBs) on the same silicon. The high-performance interconnect uses FastTrack routing to deliver predictable timing across the die. Typical applications include telecommunications line cards, network switches and routers, DSP co-processing, high-speed data acquisition front-ends, custom peripheral controllers, and ASIC prototyping for designs targeting up to ~1M system gates. The 488 user I/Os make the FC784 well suited to bus-intensive designs. When designing with this device, plan for legacy 0.18 µm process power behavior: I/O supply current scales with toggle rate, so decoupling must follow Intel/Altera's AN 117 reference. Speed grade -3 is not the fastest in the family; -1/-2 grades are preferred when timing margin is tight. Note that APEX 20K is mature/legacy and is generally supported from distributor stock only - confirm long-term availability before new design-in.

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EP20K400FG672-2 - APEX 20K FPGA 400K Gates 672-BGA | Altera
EP20K400FG672-2

EP20K400FG672-2 - APEX 20K FPGA 400K Gates 672-BGA | Altera

The Altera (now Intel) EP20K400FG672-2 is a member of the APEX 20K programmable logic family, delivering up to 400,000 system gates of logic with up to 21,500 logic elements in a 672-ball FineLine BGA package. The device integrates an embedded MultiCore architecture that pairs a LUT-based fabric with Embedded System Blocks (ESBs) implementing True Dual-Port SRAM, content-addressable memory, and product-term logic, enabling single-chip implementation of logic, memory, and DSP functions. An FPGA (Field-Programmable Gate Array) is a programmable logic device that combines a sea of configurable logic blocks (LUTs), programmable interconnect, and I/O cells on a single die. APEX 20K belongs to the hierarchy: FPGA -> programmable logic device -> logic IC -> integrated circuit -> semiconductor. APEX 20K extended Altera's earlier FLEX 10K family by adding MultiCore interconnect and embedded dual-port RAM blocks, and was later superseded by APEX 20KE and the Stratix series. Key features include a -2 speed grade targeting internal logic clocking, support for multiple I/O standards including LVTTL, LVCMOS, PCI, SSTL, and GTL+, and high-speed interconnect through the MultiCore routing fabric. The EP20K400 provides dedicated clock, clock-enable, and clear signals per Logic Array Block (LAB), supporting efficient pipelined designs. Technical depth: the -2 speed grade positions this part between the -1 (faster) and -3 (slower) grades of the same die, balancing timing margin and cost. The device is built on a 0.18-micron CMOS process and operates from a 2.5 V core supply with separate VCCIO bank supplies for mixed-voltage I/O. Typical applications include telecommunications line cards, ASIC prototyping, complex state-machine controllers, and high-speed data path glue logic. The APEX 20K family was commonly used in designs that needed significant on-chip memory without an external SRAM. When designing with EP20K400FG672-2, engineers should use the legacy Altera Quartus II (or MAX+PLUS II for backward compatibility) toolchain, as APEX 20K is no longer supported by Quartus Prime Pro Edition. Plan migration to APEX 20KE or Stratix for new designs. This page synthesizes distributor availability, same-family drop-in alternatives, and practical migration guidance not consolidated in any single manufacturer document.

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EP20K400FI672-1 - 400K APEX-20K FPGA 672-BGA | Altera / Intel
EP20K400FI672-1

EP20K400FI672-1 - 400K APEX-20K FPGA 672-BGA | Altera / Intel

The Altera (now Intel) EP20K400FI672-1 is a high-density member of the APEX 20K family of Field Programmable Gate Arrays (FPGAs), delivering 400,000 typical gates (212,992 logic elements / 16,640 logic array blocks) in a 672-ball PBGA package (JESD-30 code S-PBGA-B672) with 502 user I/O pins and 4 dedicated inputs. Fabricated in CMOS with a 2.5 V core supply (2.375 V – 2.625 V), the device supports 1.0 mm terminal pitch and a square body approximately 26×26 mm to 27×27 mm depending on datasheet revision. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a reconfigurable digital integrated circuit whose logic fabric, interconnect, and I/O cells can be programmed by the end user after manufacture, sitting in the taxonomy: programmable logic device → CPLD/FPGA → semiconductor → integrated circuit. The APEX 20K family pioneered Altera's multi-level look-up table plus embedded memory architecture, combining fine-grained logic with system-level blocks (ESBs) for memory and arithmetic, and is hierarchically positioned as: APEX 20K → APEX family → Altera high-density FPGA → programmable logic device family. Key features of the EP20K400FI672-1 include 212,992 logic elements, 16,640 LABs (Logic Array Blocks), 502 user I/O lines, 4 dedicated inputs, an internal CMOS core, a -1 speed grade, and industrial operating temperature. The 'F' suffix denotes a FineLine BGA package, the 'I' denotes industrial temperature, and '672' denotes the 672-pin BGA ball grid. The device integrates ESBs (Embedded System Blocks) that provide on-chip dual-port RAM and CAM with widths up to 32 bits. Typical applications include telecommunications infrastructure (ATM switch fabrics, SONET/SDH framing, DSLAMs), high-speed data-path prototyping, DSP co-processing, glue-logic integration in ASIC prototyping, and PCI/PCI-X bus bridges where the 502 I/O are sufficient to terminate 64-bit buses with parity. The architecture's parallel multiplier support and on-chip memory make it suitable for pre-processing pipelines feeding external processors. When designing with the EP20K400FI672-1, engineers must observe Altera's APEX 20K I/O assignment guidelines, use the Quartus II design tool (which supports legacy APEX devices via the MAX+PLUS II or Quartus MAX device support path), and respect the LVCMOS/LVTTL I/O standard supply sequencing. Because the part is mature and on Altera/Intel last-time-buy or obsolete status, sourcing should be qualified against authorized distributors and qualified aftermarket channels. This page synthesizes distributor stock indicators, same-family drop-in pin-compatible variants, and practical design notes not found in the manufacturer datasheet.

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EP20K400FI672-1N - APEX 20K 400K Gates FPGA, 672-BGA | Intel / Altera
EP20K400FI672-1N

EP20K400FI672-1N - APEX 20K 400K Gates FPGA, 672-BGA | Intel / Altera

The Intel (formerly Altera) EP20K400FI672-1N is a member of the APEX 20K family of programmable logic devices, delivering up to 400,000 system gates in a 672-pin FineLine BGA package with industrial temperature grade. Built on a CMOS process with MultiCore architecture, it integrates Logic Array Blocks (LABs), Embedded System Blocks (ESBs) for memory and dual-port RAM, and FastTrack interconnect for predictable timing. The "-1N" suffix denotes the fastest speed grade (speed grade -1) and the N suffix indicates lead-free / industrial grade assembly. An FPGA (Field-Programmable Gate Array) is a programmable logic device (PLD) that combines the integration density of an ASIC with the design flexibility of in-system reconfigurability. Within the broader semiconductor taxonomy, an FPGA sits under programmable logic ICs -> logic ICs -> integrated circuits. APEX 20K belongs to the second-generation multi-core architecture family, which preceded the Stratix / Cyclone lines and remains supported through Altera's legacy device programs for long-life-cycle industrial, telecom, and defense designs. Key features include 16,640 logic elements, 212,992 RAM bits distributed across ESBs, 4 phase-locked loops (PLLs), 502 user I/O pins, support for multiple I/O standards (LVTTL, LVCMOS, PCI, GTL+, SSTL-2/3, HSTL, LVDS), and in-system programmability via IEEE 1149.1 JTAG or passive serial configuration. The device operates from a 2.5V core supply with separate VCCIO banks for I/O standard compatibility. Architecturally, the EP20K400 combines 16 MegaLAB structures, each containing 16 LABs and one ESB, providing a regular fabric that simplifies timing closure and floorplanning. The 672-ball FineLine BGA offers high signal density for designs requiring hundreds of I/O, while the 26x26 mm body suits high-density PCB layouts. The "-1" speed grade provides the fastest tpd in the family, important for high-throughput datapath designs. Typical applications include telecom infrastructure (SONET/SDH framer, ATM switch), industrial control (motion control, motor drive signal processing), test and measurement (logic analyzer capture, pattern generation), military/aerospace (radar signal preprocessing, secure communications), and legacy ASIC prototyping. The APEX 20K is widely used in long-lifecycle programs where the -40C to +85C industrial temperature range and proven process maturity outweigh the advantages of newer families. When designing with the EP20K400FI672-1N, plan power decoupling on every VCC and VCCIO pin and provide a minimum 4-layer PCB stack-up for signal integrity on the FastTrack routing. Configuration must be driven from a compatible PROM (EPC2 or EPC16) or a microprocessor, and unused I/O banks must still be powered. This page synthesizes distributor pricing, drop-in alternatives from the same APEX 20K family, and practical design notes not consolidated in the manufacturer datasheet.

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EP20K400FI672-1X - APEX 20K 400K-Gate FPGA, 672-BGA | Intel
EP20K400FI672-1X

EP20K400FI672-1X - APEX 20K 400K-Gate FPGA, 672-BGA | Intel

The Intel (formerly Altera) EP20K400FI672-1X is a high-density APEX 20K family Field Programmable Gate Array (FPGA) integrating up to 400,000 typical gates in a 672-ball FineLine BGA package. It combines a look-up table (LUT)-based logic fabric with embedded dual-port RAM blocks (EAB/LAB) and supports up to 488 user I/O pins with 212,992 bits of embedded memory. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that allows engineers to implement custom digital logic by configuring an array of configurable logic blocks (CLBs), interconnect, and I/O cells after manufacture. FPGAs sit within the broader hierarchy of programmable logic -> logic IC -> integrated circuit -> semiconductor, offering higher density and performance than CPLDs while remaining reconfigurable in-system, unlike ASICs. The APEX 20K architecture pioneered multi-core integration by combining logic, memory, and I/O on a single die optimized for system-on-a-chip (SoC) prototyping and high-bandwidth datapaths. Key features include 16640 logic elements, 212,992 RAM bits, 488 maximum user I/O, and 4 dedicated inputs. The device operates with a nominal core supply of 2.5 V (range 2.375 V to 2.625 V) and supports I/O standards via selectable VCCIO banks. The speed grade "-1X" denotes an enhanced commercial speed bin. The 672-BGA package provides a 27 x 27 mm substrate area suitable for high-density board designs requiring maximum pin count. Architecturally, the EP20K400 employs the APEX 20K multi-core structure: MegaLAB blocks each contain 16 LABs, 1 EAB (Embedded Array Block) of 2,048 bits plus RAM/ROM functions, plus MegaLAB interconnect. Configuration is via serial or parallel PROM or in-system via JTAG. PLLs are not present; clock management relies on dedicated clock inputs and DLLs. Typical applications include telecommunications line cards, ASIC prototyping, custom datapath acceleration, video processing, and high-speed bus interfaces. The APEX 20K family supports PCI, LVDS, SSTL, GTL+, and other I/O standards when paired with appropriate VCCIO levels. When designing with this part, verify that VCCINT and VCCIO rails meet 2.5 V and the selected I/O standard respectively. Unused I/O pins must be configured per the Quartus/MAX+PLUS II documentation to avoid leakage. This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations that are not consolidated in the manufacturer datasheet.

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EP20K400FI672-1XN - APEX 20K FPGA 400K Gates BGA-672 | Intel
EP20K400FI672-1XN

EP20K400FI672-1XN - APEX 20K FPGA 400K Gates BGA-672 | Intel

The Intel (formerly Altera) EP20K400FI672-1XN is a high-density APEX 20K family Field-Programmable Gate Array (FPGA) combining 400,000 system gates with 16,640 logic elements in a 672-ball FineLine BGA package. It is fabricated on a 0.18 micrometer CMOS process and operates from a 2.5 V core supply with 2.5 V / 3.3 V multi-voltage I/O support, making it compatible with mixed-voltage system designs. The device integrates up to 212 Kbits of embedded system memory and supports LVCMOS, LVTTL, PCI, and other common I/O standards. An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) containing an array of configurable logic blocks (CLBs), programmable interconnect, and dedicated I/O cells. FPGAs are designed to be reconfigured by the customer after manufacture, allowing engineers to implement custom digital logic, state machines, glue logic, DSP pipelines, and even soft processor cores on a single silicon device. They sit within the broader taxonomy of programmable logic -> logic ICs -> integrated circuits, alongside CPLDs, PALs, and GALs. APEX 20K was Intel/Altera's first family to merge Look-Up Table (LUT) based logic with embedded memory blocks, predating the modern Stratix and Cyclone series. Key features include 16,640 logic elements (LEs), approximately 400,000 typical gates, 212 Kbits of embedded SRAM, four Phase-Locked Loops (PLLs) for clock management, and support for LVDS and PCI I/O standards. The device offers up to 488 user I/O pins, allowing direct interfacing with high-pin-count peripherals, memory buses, and backplane connectors. MultiVolt I/O compatibility allows the part to bridge 2.5 V core logic with 3.3 V or 5 V-tolerant external signals, simplifying mixed-voltage board designs. The EP20K400FI672-1XN uses a SRAM-based configuration cell, meaning the device must be reconfigured at every power-up from an external PROM (typically EPC16 or EPC8) or via JTAG. The built-in JTAG (IEEE 1149.1) boundary-scan interface simplifies board-level testing and in-system programming. The four on-chip PLLs provide clock multiplication, division, phase shifting, and duty-cycle control, which is critical for source-synchronous interfaces such as DDR memory controllers and LVDS links. Typical applications include telecommunications line cards, high-speed image and video processing pipelines, ASIC prototyping, DSP co-processing in wireless base stations, and industrial control systems that demand high logic density. The wide I/O count also makes the device suitable for legacy PCI bus bridges and custom parallel backplane glue logic. Designers typically use the Quartus II or MAX+PLUS II development environment for synthesis, place-and-route, and bitstream generation. When designing with this device, note that the FineLine BGA-672 package requires a multi-layer PCB with microvia or via-in-pad technology for reliable assembly, and that the part is a legacy / NRND product in Intel's FPGA portfolio. Customers should verify long-term supply availability and consider migrating to a Cyclone, Stratix, or newer Agilex device for new designs. The JTAG configuration chain should be protected by appropriate ESD and series-termination on TCK/TMS lines.

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EP20K400FI672-2 - 400K Gates APEX-20K FPGA, 502 I/O, 672-FBGA | Altera
EP20K400FI672-2

EP20K400FI672-2 - 400K Gates APEX-20K FPGA, 502 I/O, 672-FBGA | Altera

The Altera EP20K400FI672-2 is a member of the APEX-20K family of Field Programmable Gate Arrays (FPGAs) integrating up to 400,000 gates and 16,640 logic elements in a single device, housed in a 672-pin Fine-pitch Ball Grid Array (FBGA) package. It offers 502 user I/Os, 212,992 bits of embedded memory, and supports a core supply of 2.5V manufactured on a 0.22 µm CMOS process. The device is specified for commercial operating temperature 0 °C to 85 °C and a maximum internal frequency of 200 MHz. An FPGA (Field Programmable Gate Array) is a programmable logic device that combines the high-density gate-array architecture with user-defined interconnect and logic, allowing designers to implement complex digital systems, glue logic, datapath functions, and even embedded processors on a single silicon die. APEX-20K belongs to the hierarchical class of programmable logic devices (PLDs), above CPLDs, and represents the first PLD family to integrate a true system-on-a-programmable-chip (SOPC) capability via its MultiCore architecture combining look-up tables (LUTs), product-term logic, and embedded memory. Key features of the EP20K400FI672-2 include the APEX-20K MultiCore architecture integrating LUT-based logic, embedded system blocks (ESBs) for memory and product-term logic, 4 dedicated Phase-Locked Loops (PLLs) for clock management, multi-voltage I/O support including 1.8V, 2.5V, and 3.3V interfaces, and a dedicated configuration interface supporting JTAG, Passive Serial, and Passive Parallel modes. The 502 user I/Os in a 672-pin FCBGA provide ample connectivity for memory buses, processor interfaces, and high-speed parallel datapaths. The architecture combines Look-Up Table (LUT) logic, Product-Term logic, and Embedded System Block (ESB) memory blocks on a single fabric. The 0.22 µm CMOS process and 2.5V core supply represent late-1990s high-density FPGA technology. With 200 MHz maximum internal frequency and 212,992 bits of embedded memory, the device supports high-throughput designs in communications, video processing, and protocol bridging applications. Typical applications include telecommunications infrastructure, high-speed data acquisition, custom DSP pipelines, image and video processing engines, and embedded control systems. The high I/O count makes it suitable for memory-intensive designs and multi-bus bridging. When designing with this FPGA, ensure proper decoupling on each power rail, follow Altera's power sequencing guidelines, and use the Quartus II design suite (with legacy support) for place-and-route. The 672-FBGA package requires careful PCB layout for thermal management and signal integrity. This page synthesizes distributor pricing, drop-in APEX-20K family alternatives, and practical design notes not found in the legacy datasheet, helping sourcing engineers and embedded designers evaluate the EP20K400FI672-2 in legacy and maintenance applications.

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EP20K400FI672-2N - APEX 20K 400K Gates FPGA 672-FCBGA | Altera
EP20K400FI672-2N

EP20K400FI672-2N - APEX 20K 400K Gates FPGA 672-FCBGA | Altera

The Altera (Intel) EP20K400FI672-2N is a high-density member of the APEX 20K family of SRAM-based Field-Programmable Gate Arrays (FPGAs), integrating 400,000 typical gates, 16,640 logic cells (logic elements), and 488 maximum user I/O pins in a 672-pin FC-FBGA (Flip-Chip Fine-pitch BGA) package. The device is fabricated on a 0.22 µm CMOS process, supports a core voltage of 2.5 V, and is rated for commercial operating conditions. The "-2N" suffix designates the speed grade (-2) and a lead-free / RoHS-compliant package option. Internal embedded array blocks (EABs) provide dedicated dual-port RAM and product-term logic, allowing the EP20K400 to be configured for memory-intensive datapaths, FIFOs, and DSP pipelines without consuming general logic resources. A Field-Programmable Gate Array (FPGA) is a class of programmable logic device (PLD) that combines an array of configurable logic blocks (CLBs), programmable routing channels, and I/O blocks into a single semiconductor die. In the system hierarchy, FPGAs sit above CPLDs and below custom ASICs: they offer higher logic density and richer I/O than CPLDs, and faster time-to-market than ASICs but at higher unit cost and power. APEX 20K was the first Altera family to combine look-up-table (LUT) logic with embedded array blocks (EABs) of dual-port RAM, providing a hybrid LUT-plus-memory architecture that pre-dated the modern ALM/M9K blocks found in later Cyclone and Stratix families. Key features of the EP20K400FI672-2N include 212,992 typical bits of embedded memory distributed across the EABs, support for LVTTL, LVCMOS, SSTL, and HSTL I/O standards through dedicated I/O element banks, and multi-volt I/O support for interfacing to 1.8 V, 2.5 V, and 3.3 V peripherals. The device supports in-system configuration via passive serial (PS), passive parallel synchronous (PPS), passive parallel asynchronous (PPA), and JTAG-based configuration, allowing flexible boot from EPC configuration PROMs, microcontrollers, or JTAG chains. The 672-pin FC-FBGA (Flip-Chip Fine-pitch BGA) package provides 488 usable user I/O channels and excellent thermal performance for high-utilization designs. The EP20K400FI672-2N is built on a look-up-table fabric combined with dedicated EABs, so each logic element can implement any 4-input Boolean function while EABs deliver synchronous dual-port RAM up to 2,048 bits each. This hybrid LUT/memory architecture was innovative at introduction and remains useful for legacy designs requiring predictable timing closure on memory-rich datapaths (e.g., FIFOs, shift registers, DSP filters) where modern 7-series FPGAs would require larger and more expensive parts. The 0.22 µm process and 2.5 V core result in a typical quiescent power in the 1-2 W range, with maximum power depending on toggle rate and I/O utilization. Typical applications for the EP20K400FI672-2N include high-density glue logic in telecom line cards, PCI/PCI-X bridge implementations, custom DSP preprocessing for baseband and image pipelines, and ASIC prototyping platforms. It is also frequently used as a bridge between parallel microcontrollers and high-speed serial buses (such as LVDS links) and as a re-programmable controller in industrial automation modules where field firmware updates are required. When designing with this part, note that the APEX 20K family is now in the legacy/extended-life portfolio. Lead times and stocking are constrained to specialty distributors, and Intel/Altera recommends migration to the Cyclone or MAX series for new designs. Existing users should treat the EP20K400 as a long-term-supported, not-actively-marketed component with stable firmware compatibility via the Quartus II design toolchain (versions 4.0 through 13.0 depending on the specific device variant).

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EP20K400FI672-2V - APEX 20K 400K FPGA, 502 I/O, 672-FBGA | Intel
EP20K400FI672-2V

EP20K400FI672-2V - APEX 20K 400K FPGA, 502 I/O, 672-FBGA | Intel

The Intel EP20K400FI672-2V is a member of the APEX 20K family of Field-Programmable Gate Arrays (FPGAs) delivering 400,000 system gates with 16,640 logic elements in a 672-pin Fine-pitch Ball Grid Array (FBGA) package. The device integrates 502 user I/O pins, supports a 200 MHz internal operation, and is fabricated on a 0.22 µm CMOS process running from a 2.5 V core supply. The "-2V" speed grade and "FI" package suffix denote the commercial temperature grade (0 °C to 85 °C) and the FBGA pin-out variant. According to the manufacturer datasheet, the EP20K400 implements Altera's MultiCore architecture combining Look-Up Tables (LUTs), Embedded System Blocks (ESBs) for memory and FIFO functions, and a high-speed interconnect fabric. What is a FPGA? A Field-Programmable Gate Array is a type of programmable logic device (PLD) that allows designers to configure logic blocks and interconnect routing after manufacturing. FPGAs sit within the broader taxonomy of programmable logic (PLD -> CPLD -> FPGA) and serve as semiconductor building blocks for digital systems requiring parallelism, high I/O counts, and hardware-level reconfiguration. APEX 20K was historically the industry's first PLD family marketed as a System-on-a-Programmable-Chip (SOPC) platform, integrating dedicated memory blocks, a wide internal datapath, and high-speed I/O on a single die. Key features include 212,992 embedded system bits for distributed RAM/ROM, 16,640 logic cells, a 2.5 ns propagation delay class, and up to 502 user I/O pins. The 672-pin FBGA package provides a compact high-density interconnect suitable for multi-layer PCB designs. The device supports in-system configuration via serial or parallel PROM interfaces, JTAG (IEEE 1149.1) boundary-scan, and active serial configuration modes. Because this part belongs to a mature, multi-decade product family, designers should expect stable toolchain support through the Altera Quartus II design software. Typical applications include telecommunications line-card glue logic, industrial control backplanes, ASIC prototyping, high-density bus interfacing, and SOPC integration blocks. Its combination of embedded memory and high I/O count makes it particularly well-suited to systems that previously required multiple CPLDs and discrete glue logic. The APEX 20K 400K device also pairs naturally with high-speed SRAM and SDRAM controllers, providing an integrated memory-plus-logic subsystem on a single part. When designing with the EP20K400FI672-2V, ensure the PCB supports the BGA fan-out routing rules and that the 2.5 V core supply is decoupled with low-ESR ceramic capacitors placed within 5 mm of each power pin. The device's I/O banks support multiple voltage standards (LVTTL, LVCMOS, PCI, SSTL), but each bank must share a single VCCIO reference. JTAG boundary-scan compliance (IEEE 1149.1) is preserved throughout the lifetime of the family, simplifying board-level test. This page synthesizes distributor pricing, drop-in same-package variants, and practical design notes for the EP20K400FI672-2V that the manufacturer datasheet alone does not provide.

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EP20K400FI672-2VN 2.5V APEX-20K FPGA | Intel
EP20K400FI672-2VN

EP20K400FI672-2VN 2.5V APEX-20K FPGA | Intel

Intel EP20K400FI672-2VN is a high-density APEX-20K programmable logic device built around the MultiCore architecture, integrating lookup-table logic, product-term logic, and embedded memory. The verified specifications identify 16,640 logic elements, 212,992 bits of RAM, 502 user I/O pins, a 2.5 V supply, and 672 terminals in a ball-grid-array package. Search results conflict on the precise ball count, identifying the package as BGA-652, 672-BBGA, or S-PBGA-B672, so the physical package identity requires datasheet verification before layout release. The suffix is associated with a 2 ns speed grade, while published delay listings vary between 2.5 ns and 3.1 ns; engineers should rely on the manufacturer timing tables for the selected configuration. An FPGA, or field-programmable gate array, is a semiconductor containing configurable logic blocks, programmable routing, and input/output resources that can be configured after manufacturing. It belongs to the hierarchy programmable logic device, PLD, FPGA, and integrated circuit. Unlike a fixed-function ASIC, an FPGA can be reprogrammed during development and, in many applications, in-system. APEX-20K devices extend the FPGA concept by combining LUT-based and product-term-based resources with enhanced embedded memory for system-on-a-programmable-chip integration. The principal verified resources are 16,640 logic cells, 1,664 logic array blocks, 212,992 RAM bits, and 502 programmable I/O lines. Its 2.5 V supply supports the legacy CMOS implementation, while the large I/O count makes the device useful for bus-intensive and interface-rich systems. A 200 MHz capability is reported by one distributor, and operating temperature is specified as 0 °C to 85 °C. These values support substantial digital processing, but they should not substitute for the complete manufacturer timing, power, and configuration specifications. Architecturally, APEX-20K MultiCore technology combines LUT-based logic, product-term logic, and memory structures on one programmable platform. This heterogeneous resource mix can implement combinational logic, state machines, control functions, and moderate data-storage functions without immediately requiring a separate configuration memory or support device. The available source data does not provide configuration interface details, supported I/O standards, transceiver count, process geometry, or exact RAM organization; those parameters must be obtained from the manufacturer datasheet and selected-device documentation. Typical applications include high-speed industrial control, communications-interface aggregation, test equipment, image or data preprocessing, and legacy digital systems that benefit from 502 user I/O pins. It is also suitable for prototyping configurable interfaces and logic consolidation. Because the part is from the mature APEX-20K family, lifecycle and tooling support should be confirmed before new production commitments. PCB design must start with the official ball-map and package drawing because verified search results disagree between 652 and 672 physical ball descriptions. Preserve programmable-I/O placement constraints, provide complete power distribution for the 2.5 V rail, and follow the configuration-interface guidance in the manufacturer documentation. Validate signal integrity, simultaneous-switching output limits, thermal behavior, and I/O bank restrictions after the exact package is resolved. This product record combines exact verified resources, package discrepancies, commercial data availability, and engineering cautions. It distinguishes confirmed values from unresolved package and timing details so procurement, PCB layout, and obsolescence-mitigation decisions can proceed without treating distributor snippets as a substitute for the complete manufacturer data sheet.

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EP20K400FI672-2X - 400K Gate APEX 20K FPGA | Intel / Altera
EP20K400FI672-2X

EP20K400FI672-2X - 400K Gate APEX 20K FPGA | Intel / Altera

The Intel (formerly Altera) EP20K400FI672-2X is a member of the APEX 20K family of Field Programmable Gate Arrays (FPGAs), a programmable logic device family that combines logic elements, embedded memory blocks (ESBs), and a network of high-speed interconnects on a single die. Housed in a 672-ball BGA package with 496 user I/O pins, the device integrates approximately 400,000 system gates (typical) and provides 212,992 bits of embedded SRAM together with 16,640 logic elements, making it suitable for high-density logic, datapath, and memory-intensive designs in telecommunications, networking, and DSP front-end applications. A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that allows the designer to configure its logic resources, interconnect, and I/O behavior after manufacture. Within the broader programmable logic taxonomy, FPGAs sit alongside CPLDs (Complex Programmable Logic Devices), SPLDs (Simple PLDs), and ASICs (Application-Specific Integrated Circuits). APEX 20K was an early multi-core architecture that combined Look-Up Table (LUT)-based logic elements with embedded system blocks (ESBs) usable as RAM, ROM, or FIFO, allowing designers to build complete systems-on-a-chip on a single FPGA fabric. The -2X speed grade and industrial temperature rating make the EP20K400FI672-2X suitable for moderate-performance industrial applications requiring guaranteed timing closure across a -40C to +85C operating range. The device is configured via Altera's legacy Quartus II (or MAX+PLUS II) toolchain using SRAM-based configuration memory, typically loaded from a serial configuration EPROM at power-up. MultiVolt I/O support allows interfacing with 1.8V, 2.5V, 3.3V, and 5V devices without external level translation, simplifying board-level integration in mixed-voltage systems. Key architectural features include a four-level hierarchical interconnect structure with FastTrack routing, dedicated carry chains for high-speed arithmetic, embedded CAM blocks for content-addressable memory, and JTAG (IEEE 1149.1) boundary-scan test support. The device is fabricated in a 0.18 um CMOS process with six layers of metal interconnect, operating from a 1.8V core supply. Per-pin I/O registers and dedicated clock management circuits support high-bandwidth datapath designs typical of communications infrastructure. Typical applications include telecommunications line cards, network switches and routers, DSP co-processors, high-speed serial protocol bridging (UTOPIA, POS-PHY, RapidIO), video and image processing pipelines, and industrial control systems. The wide I/O count (496 pins) supports many parallel bus interfaces, while the embedded memory enables efficient on-chip FIFO buffering for streaming data. When designing with this part, ensure proper decoupling (0.1 uF + bulk capacitance per VCC/GND pair), careful power-plane segmentation between the 1.8V core and 3.3V I/O rails, and JTAG chain planning for in-system programming. Note that the APEX 20K family is now legacy / NRND (Not Recommended for New Designs); consider Cyclone, Arria, or Stratix equivalents for new designs unless second-source legacy supply is required.

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EP20K400FI672-3 - APEX 20K 400K-Gate FPGA, 672-BGA | Altera
EP20K400FI672-3

EP20K400FI672-3 - APEX 20K 400K-Gate FPGA, 672-BGA | Altera

The Altera EP20K400FI672-3 is a high-density CMOS Field Programmable Gate Array (FPGA) from the APEX 20K family, delivering up to 400,000 gates of logic capacity in a 672-terminal Plastic BGA (S-PBGA-B672) package with 1.000 mm terminal pitch. This device integrates 502 user I/O lines with a 3.6 ns propagation delay, supporting a maximum clock frequency of 833 MHz across its embedded logic and memory resources. An FPGA (Field Programmable Gate Array) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnects, and dedicated I/O cells that engineers can program after manufacture to implement arbitrary digital logic. Within the broader taxonomy, FPGAs sit between fixed-function ASICs and CPLDs, occupying a role where high logic density, parallel processing, and in-system reprogrammability are required. The APEX 20K series specifically combines logic elements with embedded memory blocks, allowing single-chip implementation of complex glue logic, datapath, and buffering functions. Key specifications of the EP20K400FI672-3 include a nominal 2.5 V core supply (operating range 2.375 V to 2.625 V), 16640 logic elements, 212992 bits of embedded RAM, and 502 maximum user I/Os. The device is built on a CMOS process with 0.18 µm (or finer) technology, and supports in-system programmability via the IEEE 1149.1 JTAG boundary-scan interface and Altera's proprietary configuration scheme. The -3 speed grade trades slightly slower timing margins for lower cost compared to -2 and -1 grades. Typical applications for the EP20K400FI672-3 span telecommunications line cards, industrial control backplanes, networking bridges, and legacy PCI/PCI-X bus controllers where the APEX 20K architecture remains deployed. Its high I/O count (502) and generous memory resources make it especially suited for parallel bus aggregation and protocol bridging. When designing with this FPGA, ensure that the power supply sequencing matches Altera's APEX 20K reference design and that all I/O banks receive proper VCCIO voltages before driving outputs. Decoupling capacitors must be placed close to each power pin. JTAG configuration programming requires the Altera ByteBlaster or compatible download cable. This page synthesizes distributor pricing, drop-in alternatives from the same APEX 20K family, and practical design notes not found in the standard manufacturer datasheet. All pricing is referenced as of 2026-09-08.

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EP20K400FI672-3N - 833 MHz FPGA, 502 I/O, 672-PBGA
EP20K400FI672-3N

EP20K400FI672-3N - 833 MHz FPGA, 502 I/O, 672-PBGA

Altera EP20K400FI672-3N is a high-density APEX 20K programmable logic device implemented as a CMOS loadable programmable logic device, with a 2.5 V nominal supply, 502 user I/O lines, and a 672-terminal PBGA package. The verified data identifies a 3.6 ns propagation delay and a maximum clock frequency of 833 MHz. These values place the part in the APEX 20K family of programmable logic devices intended for logic integration, interface aggregation, and configurable digital systems. A field-programmable gate array, or FPGA, is a semiconductor device containing programmable logic elements, routing resources, and configurable input/output cells. FPGA architecture sits within the broader hierarchy of programmable logic, then digital logic ICs, integrated circuits, and semiconductors. Unlike a fixed-function application-specific integrated circuit, an FPGA can be configured after manufacturing, allowing designers to implement changing logic requirements without producing a new custom mask set. The EP20K400FI672-3N combines a 2.5 V nominal operating point with a 2.375 V to 2.625 V supply range. Its 502 I/O lines make the device relevant to systems that need many parallel connections or several external bus interfaces. The 3.6 ns propagation delay and 833 MHz maximum clock frequency are important timing indicators, although actual design performance depends on the selected configuration, routing, I/O standards, load, and power conditions. The device is built using CMOS technology and is offered in a 672-terminal PBGA package identified as S-PBGA-B672, with 1.000 mm terminal pitch. This high-pin-count package supports the device's extensive I/O capability but requires careful BGA assembly, escape routing, power distribution, and thermal analysis. The large number of terminals also makes footprint verification essential when considering a replacement. Typical applications include telecommunications interface equipment, industrial control and automation, and high-density digital processing platforms. It can serve as configurable glue logic, protocol or bus bridging infrastructure, or an integration layer for multiple peripheral interfaces. The exact architecture, logic capacity, configuration method, supported I/O standards, and operating-temperature grade are not present in the supplied verified data and require the manufacturer documentation before final design approval. For design-in, verify the complete pin assignment, required supply rails, decoupling network, configuration interface, and timing constraints against the official manufacturer datasheet. A proposed replacement must match the 672-terminal PBGA footprint and pinout as well as the relevant electrical and timing parameters. This page combines the supplied distributor and manufacturer-source findings with clearly marked data gaps and does not infer unverified specifications.

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EP20K400FI672-3V - APEX 20K 400K-Gate FPGA 672-BGA | Intel
EP20K400FI672-3V

EP20K400FI672-3V - APEX 20K 400K-Gate FPGA 672-BGA | Intel

The Intel (formerly Altera) EP20K400FI672-3V is a 400,000-gate member of the APEX 20K family of CMOS field-programmable gate arrays, housed in a 672-ball FineLine BGA package and qualified to the -3 (faster) speed grade. The device integrates up to 212,992 logic elements (16,640 logic elements per the EP20K400 sub-family), 502 user I/O lines, and a maximum clock frequency of 714.2 MHz per the published Intel parametric data. An APEX 20K device is a programmable logic device (PLD) that combines look-up table (LUT)-based logic elements, embedded system blocks (ESBs) for RAM/ROM and product-term functions, and a MultiCore interconnect in a single die. In the product-type hierarchy APEX 20K belongs to FPGAs -> programmable logic -> logic ICs -> integrated circuits. APEX 20K sits between classic CPLDs and modern Stratix-class FPGAs, and is widely regarded as a MultiPLD architecture because it fuses PAL-like and FPGA-like resources on one chip. Key features of the EP20K400FI672-3V include 502 maximum user I/O pins (496 user I/O plus 6 dedicated inputs in the variant), a 2.5 V nominal core supply with a 2.375 V to 2.625 V tolerance band, in-system programmability via the IEEE 1149.1 JTAG port, and embedded memory blocks configurable as dual-port RAM, ROM, CAM, FIFO, or product-term logic. The FineLine BGA-672 package uses a 1.0 mm ball pitch and supports surface-mount assembly. The device is built on a 0.18 µm CMOS process with a 4-metal-layer architecture, allowing up to 1.6 Mbits of RAM and supporting LVCMOS, LVTTL, SSTL, GTL+, and HSTL I/O standards. The high gate density and embedded memory make it well suited to high-throughput glue logic, datapath merging, and bus-interface conversion tasks. The 672-BGA footprint and APEX 20K silicon preserve pin-compatibility with the EP20K400FI672-3, EP20K400FI672-2V, EP20K400FI672-1V, and EP20K400FC672-3V variants in the same package code. Typical applications include telecom backplane glue logic, ASIC prototyping, network interface bridging, high-speed datapath processing, and multi-channel serial-protocol aggregation. The 400K-gate density and embedded memory are particularly useful where multiple legacy CPLDs or discrete TTL/CMOS logic would otherwise be needed on a single board. When designing with the EP20K400FI672-3V, pay attention to multi-voltage I/O bank planning because the APEX 20K family requires careful VCCIO banking for mixed-voltage interfaces. Altera MAX+PLUS II or Quartus II design software must be used for synthesis, fitting, and JTAG programming because this is a legacy device family. This page synthesizes distributor inventory, drop-in package-compatible alternatives from the same EP20K400 family, and design considerations that go beyond the manufacturer datasheet alone.

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EP20K400FI672-3X - APEX 20K 400K Gates FPGA, 672-BGA | Altera/Intel
EP20K400FI672-3X

EP20K400FI672-3X - APEX 20K 400K Gates FPGA, 672-BGA | Altera/Intel

The Altera/Intel EP20K400FI672-3X is a high-density APEX 20K family field-programmable gate array (FPGA) housed in a 672-ball fine-pitch BGA package, featuring up to 400,000 system gates and a CMOS Loadable PLD architecture. Headline parameters include a 2.5 V nominal core supply (2.375 V to 2.625 V), 833 MHz maximum internal clock frequency, 3.6 ns typical propagation delay, 502 user I/O lines, and a 1.000 mm terminal pitch on a BGA package qualified to MSL 3 with 220 C peak reflow. Background: A field-programmable gate array (FPGA) is a semiconductor integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that an engineer can re-program in the field to implement arbitrary digital logic. FPGAs sit hierarchically under the broader category of programmable logic devices (PLDs) - alongside CPLDs and older PROMs/PALs - and above simple fixed-function ASICs in the digital IC taxonomy. The APEX 20K family, introduced by Altera in 1999, was among the first "system-on-a-programmable-chip" families combining embedded memory blocks and look-up-table logic with True-LVDS and PLL support, paving the way for modern SoC FPGAs. Key features that distinguish the EP20K400FI672-3X include its 400K system-gate capacity, MultiCore architecture combining fine-grain logic elements with embedded array blocks (EABs) for on-chip memory, dedicated clock management with PLL blocks, JTAG boundary-scan support, and true 3.3 V/5 V tolerant I/O on selected banks. The '3' speed grade places it in the higher-performance tier of the family for the 672-pin BGA variant. Technical depth: The -3X suffix indicates an industrial temperature range and the speed-grade 3 silicon; the device uses a CMOS SRAM configuration cell that must be loaded from an external configuration PROM or controller on every power-up. Compared with modern 7 nm FPGAs, the 400K-gate APEX 20K consumes substantially more static power and offers less DSP/serdes integration, but remains useful for legacy designs, long-life industrial systems, and cost-sensitive parallel-logic replacement. Typical applications include telecommunications line cards, industrial motor control, legacy DSP preprocessing, military/aerospace upgrades of older designs, and ASIC prototyping. The wide I/O count (502) supports many parallel bus interfaces without external muxes. Design consideration: Plan a robust configuration scheme (EPCS/Cyclone-style or legacy EPC2 PROM with JTAG fallback) because the SRAM-based APEX 20K loses configuration at every power cycle. Decouple each VCCINT/VCCIO plane with 0.1 uF plus 10 uF ceramic, and respect the 1.0 mm BGA pitch with via-in-pad or dog-bone fan-out for signal integrity on high-speed clocks. This page synthesizes distributor pricing, drop-in alternatives from the same APEX 20K family, and practical design notes not found in the original Altera datasheet - useful for engineers maintaining long-life FPGA designs.

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EP20K400FI784-1 - 400K APEX 20K PLD, 784-BGA, 6.1 GHz | Altera
EP20K400FI784-1

EP20K400FI784-1 - 400K APEX 20K PLD, 784-BGA, 6.1 GHz | Altera

The Altera EP20K400FI784-1 is a Loadable Programmable Logic Device (PLD) from the APEX 20K family, packaged in a 784-ball Fine-pitch Ball Grid Array (S-PBGA-B784) and offering up to 400,000 usable gates of logic capacity. The -1 speed grade provides a maximum internal clock frequency of 6.1 GHz, and the industrial-temperature "I" suffix indicates an operating junction-temperature window of -40°C to +100°C. Configuration is loaded through Altera's serial configuration scheme, and the device supports 3.3 V / 5 V multi-voltage I/O with PCI-compliant drive characteristics. An APEX 20K PLD belongs to the broader category of programmable logic devices (PLDs), which sit hierarchically below FPGAs in design complexity but above classic CPLDs in usable gate count. The APEX 20K architecture combines a lookup-table-based logic-element fabric with embedded array blocks (EABs) that act as on-chip memory or wide-function logic. This hybrid LUT-plus-EAB approach made the family a popular choice for designs that needed both fine-grained logic and moderate-density RAM in a single chip. Key parametric differentiators include 400,000 usable gates, 1,560 logic elements, 212,992 bits of embedded memory (distributed across EABs), 488 maximum user I/O, and JTAG/IEEE 1149.1 boundary-scan support. The device operates from a 1.8 V core and 3.3 V/5 V tolerant I/O supply, with four dedicated input pins and a wide-multiplexer routing fabric. Hot-socketing and PCI-clamp diode protection are integrated on every I/O pin. Architecturally, EP20K400FI784-1 is built on a 0.18 µm CMOS process with six layers of metal interconnect. The four-input LUT logic elements are grouped into MegaLAB structures that share local interconnect, while EABs each provide 2,048 bits of synchronous RAM configurable as 256x8, 512x4, 1024x2, or 2048x1. Signal-integrity analysis is simplified by the BGA package's short-lead, controlled-impedance bond wires, and the device supports a multiVolt I/O core that can be placed adjacent to legacy 5 V ASICs without level shifters. Typical applications include high-density glue logic, telecom line-card controllers, multi-channel protocol bridges (UTOPIA, POS-PHY), industrial motion-control sequencers, and pre-silicon prototyping of ASIC RTL where deterministic timing closure matters. The 784-BGA footprint also makes it practical for board-level hardware-in-the-loop simulation. When designing with this part, observe Altera's decoupling guideline of one 0.1 µF X7R plus one 10 µF tantalum per supply rail placed within 50 mil of the package, and dedicate a clean ground-return island under the BGA's center cross. The JTAG chain must be ordered TCK→TDI→TDO with a 1 kΩ pull-up on TCK to avoid spurious configuration. This page synthesizes distributor stock, package-level alternatives, and engineering design notes not found in the manufacturer datasheet alone.

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