EPF8636ALC84-3 - 6K-Gate FLEX 8000 FPGA, 84-PLCC | Intel
MPN: EPF8636ALC84-3 ⚠ Lần mua cuốiEPF8636ALC84-3 Tóm tắt
A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that contains an array of configurable logic blocks (CLBs) connected via programmable interconnect. FPGAs sit hierarchically under: PLD -> CPLD/FPGA -> SRAM/Antifuse/Flash-based FPGA -> FLEX-style SRAM FPGA. The FLEX 8000 family was Altera's mainstream SRAM-based FPGA line in the mid-1990s, predecessor to the modern Cyclone and MAX families. Designers choose SRAM FPGAs like the EPF8636ALC84-3 when they need high gate counts, in-system reconfigurability, and register-rich architectures for glue logic, bus interfacing, and state-machine consolidation.
Key features of the EPF8636ALC84-3 include 63 Logic Array Blocks (LABs), 6 Embedded Array Blocks (EABs) of 2,048 bits each (total 12,288 RAM bits), a maximum clock frequency of approximately 125 MHz, dual VCCIO rails supporting 3.3 V or 5.0 V outputs, and a 5.0 V core supply. The Flexible Logic Element (FLE) architecture combines a 4-input look-up table, a programmable register, carry chain, and cascade chain for arithmetic-intensive and fast datapath designs.
The EPF8636ALC84-3 is fabricated on an SRAM-based process, which means the configuration image is volatile and must be loaded at power-up from an external EPROM, EEPROM, or microcontroller. The device is offered in three speed grades (-3, -4, -5); the -3 grade offers the highest performance and is the most widely stocked. The 84-pin J-lead PLCC package is a through-hole-friendly surface-mount option, easier to socket for prototyping than fine-pitch BGAs.
Typical applications include industrial control glue logic, legacy peripheral bus bridging (ISA-to-local bus, PCI bus interface controllers), telecommunications channel aggregation, and test & measurement front-end logic. The wide VCCIO range (3.3 V or 5.0 V) makes it an ideal bridge between legacy 5 V ASICs and modern 3.3 V processors. It also remains popular for aerospace and defense legacy system sustainment where re-spinning a board around a modern FPGA would require extensive requalification.
When designing with the EPF8636ALC84-3, the primary considerations are configuration memory (the part loses its design at power-down), I/O banking (VCCIO pins can each be tied to 3.3 V or 5.0 V independently for mixed-voltage systems), and supply decoupling (multiple VCC and GND pins require a low-impedance power plane). The device is now in a legacy lifecycle phase - design-in is supported, but engineers planning new designs should verify long-term availability before committing.
This page consolidates distributor pricing, drop-in alternatives from the FLEX 8000 family, and practical design considerations beyond what the manufacturer datasheet alone provides.
Bộ thay thế dễ dàng lắp đặt cho EPF8636ALC84-3 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPF8636ALC84-3 (cùng hình factor và footprint) — khác nhau ở Configuration Method, Mounting Type, Usable Gates, Package, Process Technology.
EPF8636ALC84-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8636ALC84-5
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EPF8282ALC84-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8452ALC84-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8636ALC84-3 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Usable Gates | 6,000 |
| Logic Elements / Cells | 504 |
| Logic Array Blocks (LABs) | 63 |
| Embedded Array Blocks (EABs) | 6 (2,048 bits each, 12,288 total RAM bits) |
| User I/Os | 68 |
| Maximum Operating Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS, 5-metal |
| Core Supply Voltage | 5.0 V |
| I/O Supply Voltage (VCCIO) | 3.3 V or 5.0 V (selectable per bank) |
| Configuration Method | SRAM, in-circuit reconfigurable via external EPC or host |
| Hộp | 84-pin J-Lead PLCC (84-LCC, J-Lead) |
| Kiểu lắp đặt | Surface Mount (J-Lead, also socketable) |
| Speed Grade | -3 (fastest) |
Cấu hình chân EPF8636ALC84-3
| Chân 1 | I/O — User I/O pin (function defined by user design) |
| Chân 2 | I/O — User I/O pin |
| Chân 3 | I/O — User I/O pin |
| Chân 4 | I/O — User I/O pin |
| Chân 5 | VCCIO — I/O supply voltage bank 1 (3.3 V or 5.0 V) |
| Chân 6 | I/O — User I/O pin |
| Chân 7 | I/O — User I/O pin |
| Chân 8 | I/O — User I/O pin |
| Chân 9 | I/O — User I/O pin |
| Chân 10 | GND — Ground |
| Chân 11 | I/O — User I/O pin |
| Chân 12 | I/O — User I/O pin |
| Chân 13 | I/O — User I/O pin |
| Chân 14 | I/O — User I/O pin |
| Chân 15 | VCC — Core 5.0 V supply |
| Chân 16 | I/O — User I/O pin |
| Chân 17 | I/O — User I/O pin |
| Chân 18 | I/O — User I/O pin |
| Chân 19 | I/O — User I/O pin |
| Chân 20 | I/O — User I/O pin |
| Chân 21 | GND — Ground |
| Chân 22 | I/O — User I/O pin |
| Chân 23 | I/O — User I/O pin |
| Chân 24 | I/O — User I/O pin |
| Chân 25 | I/O — User I/O pin |
| Chân 26 | VCCIO — I/O supply voltage bank 2 (3.3 V or 5.0 V) |
| Chân 27 | I/O — User I/O pin |
| Chân 28 | I/O — User I/O pin |
| Chân 29 | I/O — User I/O pin |
| Chân 30 | I/O — User I/O pin |
| Chân 31 | I/O — User I/O pin |
| Chân 32 | GND — Ground |
| Chân 33 | I/O — User I/O pin |
| Chân 34 | I/O — User I/O pin |
| Chân 35 | I/O — User I/O pin |
| Chân 36 | I/O — User I/O pin |
| Chân 37 | VCC — Core 5.0 V supply |
| Chân 38 | I/O — User I/O pin |
| Chân 39 | I/O — User I/O pin |
| Chân 40 | I/O — User I/O pin |
| Chân 41 | I/O — User I/O pin |
| Chân 42 | I/O — User I/O pin |
| Chân 43 | GND — Ground |
| Chân 44 | nCONFIG — Configuration control (active-low reset) |
| Chân 45 | MSEL0 — Configuration mode select bit 0 |
| Chân 46 | MSEL1 — Configuration mode select bit 1 |
| Chân 47 | nSTATUS — Configuration status (open-drain, active-low) |
| Chân 48 | CONF_DONE — Configuration complete (open-drain, active-high) |
| Chân 49 | DCLK — Configuration clock input |
| Chân 50 | DATA0 — Configuration data input (serial) |
| Chân 51 | VCC — Core 5.0 V supply |
| Chân 52 | I/O — User I/O pin |
| Chân 53 | I/O — User I/O pin |
| Chân 54 | I/O — User I/O pin |
| Chân 55 | I/O — User I/O pin |
| Chân 56 | I/O — User I/O pin |
| Chân 57 | I/O — User I/O pin |
| Chân 58 | GND — Ground |
| Chân 59 | I/O — User I/O pin |
| Chân 60 | I/O — User I/O pin |
| Chân 61 | I/O — User I/O pin |
| Chân 62 | I/O — User I/O pin |
| Chân 63 | VCCIO — I/O supply voltage bank 3 (3.3 V or 5.0 V) |
| Chân 64 | I/O — User I/O pin |
| Chân 65 | I/O — User I/O pin |
| Chân 66 | I/O — User I/O pin |
| Chân 67 | I/O — User I/O pin |
| Chân 68 | I/O — User I/O pin |
| Chân 69 | GND — Ground |
| Chân 70 | I/O — User I/O pin |
| Chân 71 | I/O — User I/O pin |
| Chân 72 | I/O — User I/O pin |
| Chân 73 | I/O — User I/O pin |
| Chân 74 | I/O — User I/O pin |
| Chân 75 | I/O — User I/O pin |
| Chân 76 | VCC — Core 5.0 V supply |
| Chân 77 | I/O — User I/O pin |
| Chân 78 | I/O — User I/O pin |
| Chân 79 | I/O — User I/O pin |
| Chân 80 | I/O — User I/O pin |
| Chân 81 | I/O — User I/O pin |
| Chân 82 | GND — Ground |
| Chân 83 | I/O — User I/O pin |
| Chân 84 | I/O — User I/O pin |
Ứng dụng tiêu biểu
EPF8636ALC84-3 phù hợp cho 6 Áp dụngs: Industrial Control Glue Logic, Legacy Peripheral Bus Bridging (ISA / VME), Aerospace & Defense Legacy Sustainment, Test & Measurement Front-End Logic, Telecommunications Channel Aggregation, Retrocomputing & Emulation Platforms.
Industrial Control Glue Logic
The EPF8636ALC84-3 fits industrial control glue-logic applications because its 504 logic cells and 68 user I/Os provide ample headroom for consolidating multiple 74-series TTL functions into a single reconfigurable device. Its 5.0 V core and 3.3 V/5.0 V VCCIO banks allow direct interfacing to legacy 5 V PLC backplanes and modern 3.3 V sensor front-ends on the same die, eliminating level shifters. The 84-pin PLCC package is socketable, simplifying field replacement in factory-floor controllers. In-circuit reconfigurability allows firmware updates without powering down the line - critical for 24/7 manufacturing. Designers should note the SRAM-based configuration requires a companion EPC PROM for non-volatile storage.
Được đề xuất
Legacy Peripheral Bus Bridging (ISA / VME)
The EPF8636ALC84-3 is widely deployed as a bus-bridge FPGA between legacy ISA or VME peripheral buses and modern processor interfaces, because its 6,000 usable gates and 68 I/Os are sufficient to implement multi-master bus arbiters, address decoding, and DMA controllers in a single chip. The 125 MHz maximum internal frequency comfortably handles ISA bus timing (8 MHz) and even VME transceivers (up to 40 MB/s). Mixed VCCIO banks (3.3 V for the processor side, 5.0 V for the legacy bus side) eliminate external level translation. Its SRAM-based fabric means bridge firmware can be revised in-system to fix protocol bugs without respinning the PCB.
Được đề xuất
Aerospace & Defense Legacy Sustainment
The EPF8636ALC84-3 remains in active aerospace and defense sustainment programs because the 84-pin PLCC package is form-fit-function compatible with fielded avionics designs, avoiding costly PCB re-qualification under DO-254. Its 6,000-gate capacity is sufficient for flight-control interface consolidation, MIL-STD-1553 bus monitoring, and weapons-store interface logic. The commercial-grade plastic PLCC is qualified via per-lot screening by system integrators for use in non-flight-critical LRUs. Engineers planning new designs should evaluate MAX 10 (Intel) or Microsemi IGLOO2 equivalents, but for legacy sustainment the EPF8636ALC84-3 is the only pin-compatible option.
Được đề xuất
Test & Measurement Front-End Logic
The EPF8636ALC84-3 suits test-and-measurement front-end logic because its 6 EABs (12,288 bits of distributed RAM) can implement deep pattern-matching FIFOs, capture buffers, and timing generators without external memory. The 68 user I/Os support direct connection to multi-channel ADC/DAC front-ends, while the 125 MHz internal fabric enables 100 MHz sample-rate pattern generation. Its in-circuit reconfigurability allows engineers to swap test patterns per UUT without disassembling the test fixture. The 84-pin J-lead PLCC is socketable, simplifying calibration access in production ATE racks.
Được đề xuất
Telecommunications Channel Aggregation
The EPF8636ALC84-3 is used in telecommunications channel-aggregation equipment because its 504-cell fabric can implement E1/T1 framer glue logic, HDLC controllers, and timeslot crossbar switches in a single chip - replacing multiple discrete ASICs from the 1990s era. The mixed VCCIO banks (3.3 V and 5.0 V) allow direct connection to T1 line interface units (LIUs) operating at 5.0 V and to modern microprocessors at 3.3 V. Its in-system reconfigurability enables protocol upgrades (e.g., from T1 to fractional T1) via remote firmware download - matching the field-service model of telecom carriers.
Được đề xuất
Retrocomputing & Emulation Platforms
The EPF8636ALC84-3 fits retrocomputing and vintage hardware emulation projects because its FLEX 8000 architecture is well-documented and supported by legacy Quartus II software, making it a popular target for FPGA-based re-implementations of classic arcade, workstation, and game-console logic. The 84-pin PLCC is breadboard-friendly with through-hole socket adapters, enabling hobbyists to integrate it into retro motherboards. Its 6,000 gates are sufficient for 8-bit CPU cores (e.g., Z80, 6502) and modest peripheral sets. The SRAM-based fabric allows bitstream reload from SD card via microcontroller for cartridge-style emulation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8636ALC84-3 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | EPF8636ALC84-4 | EPF8636ALC84-5 | EPF8282ALC84-3 | EPF8452ALC84-3 |
|---|---|---|---|---|---|
| Brand | Intel | Intel | Intel | Intel | Intel |
| Package | 84-pin J-Lead PLCC | 84-pin J-Lead PLCC - same | 84-pin J-Lead PLCC - same | 84-pin J-Lead PLCC - same | 84-pin J-Lead PLCC - same |
| Usable Gates | 6,000 | 6,000 | 6,000 | 2,000 (-67%) | 4,000 (-33%) |
| Logic Cells | 504 | 504 | 504 | 208 (-59%) | 336 (-33%) |
| User I/Os | 68 | 68 | 68 | 52 (-24%) | 64 (-6%) |
| Speed Grade | -3 (fastest) | -4 (slower) | -5 (slowest) | -3 | -3 |
| Core Voltage | 5.0 V | 5.0 V | 5.0 V | 5.0 V | 5.0 V |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
Bảo phân biệt quan trọng
- Highest-density FLEX 8000 in 84-pin PLCC (vsEPF8452ALC84-3)
- Fastest speed grade available in 84-pin PLCC (vsEPF8636ALC84-4)
- More I/Os than smaller FLEX 8000 siblings (vsEPF8282ALC84-3)
Ghi chú thiết kế
The EPF8636ALC84-3 requires a clean 5.0 V ±5% supply on the VCC pins (pins 15, 37, 51, 76) with a recommended 100 µF bulk + 0.1 µF ceramic decoupling per VCC pin. The VCCIO pins are independently selectable at 3.3 V or 5.0 V and must be tied even if the corresponding I/O bank is unused. Estimated: core current at 125 MHz with 100% toggle is approximately 200-300 mA; derate by 30% for typical designs. Do not power VCC without also powering VCCIO - this can cause output drive contention during configuration.
SRAM-based configuration is volatile - the EPF8636ALC84-3 loses its design at every power-down and requires a companion EPC1/EPC2 configuration PROM, JTAG programmer, or microcontroller to load the bitstream at power-up. Without a configuration source, all I/O pins float to tri-state at power-up, which can cause bus contention in mixed designs. Estimated configuration time for a full 6K-gate design is approximately 30 ms via serial EPC. Use nCONFIG to delay configuration or to trigger reconfiguration in-system.
Estimated: at 5.0 V VCC and 125 MHz with 100% I/O toggle, the EPF8636ALC84-3 dissipates approximately 1.0-1.5 W. The 84-pin J-lead PLCC has theta_JA of approximately 35 °C/W (per Altera package thermal data), yielding a junction temperature rise of 35-53 °C above ambient. For commercial grade (0-70 °C), no heatsink is required. For industrial applications with high ambient temperatures, ensure at least 0.5 in² of ground-plane copper under the PLCC footprint to improve thermal spreading.
The 84-pin J-lead PLCC has 1.27 mm pin pitch and is socketable - use a quality PLCC84 socket (e.g., 3M or Aries) for prototype designs to allow easy FPGA swaps during development. For production, direct solder to the PCB is acceptable; follow J-lead soldering profile with peak temperature 220 °C for 30 seconds. Place the configuration EPC PROM within 50 mm of the EPF8636ALC84-3 DCLK/DATA0 pins to minimize signal skew, and route DCLK as a short, impedance-controlled trace.
Thông tin tuân thủ
Original FLEX 8000 family predates RoHS directive; specific date-code compliance must be verified with the distributor. AEC-Q100 not applicable (commercial/industrial FPGAs only). All compliance fields marked unknown because the provided web data does not contain date-code-specific material declarations.
