EPF8282ALI84-4 - FLEX 8000 FPGA 2.5K Gates | Intel / Altera
MPN： EPF8282ALI84-4 ✗ 停產EPF8282ALI84-4 概覽
A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable routing channels, and I/O cells, all controlled by user-loaded SRAM configuration bits. FPGAs sit between discrete logic ICs (74-series glue logic) and ASICs in the design hierarchy: like glue logic they are field-reprogrammable, but unlike ASICs they require no fab cycles, making them ideal for prototyping, low-volume production, and design iteration. The FLEX 8000 family represents one of the early Altera SRAM-based FPGA families, positioned as a register-rich CMOS PLD alternative to mask-programmed gate arrays.
Key features of the EPF8282ALI84-4 include 2,500 typical gates (up to 16,000 usable gates per family), 208 logic cells/elements, in-circuit reconfigurability (ICR) via external configuration devices, 5 V core supply, 125 MHz internal performance, and JTAG-based boundary-scan test support. The 84-pin PLCC package provides through-hole compatibility for legacy and ruggedized designs.
Architecturally, the FLEX 8000 device employs continuous FastTrack interconnect routing with predictable delay, embedded array blocks (EABs) for memory functions, and a SRAM configuration cell that supports infinite reconfiguration. The -4 speed grade places this part in the slower industrial-spec timing bin suitable for cost-sensitive applications.
Typical applications include industrial control logic, glue-logic replacement on legacy 5 V buses, ASIC prototyping, and bridging interfaces between microprocessors and peripherals. The 5 V tolerance makes it a fit for legacy industrial PC/104, VME, and STD bus designs where 3.3 V FPGAs cannot be used.
When designing with the EPF8282ALI84-4, ensure the configuration device (EPC2 or compatible) is correctly wired and that the 5 V supply rail stays within ±5 % tolerance during power-up to avoid partial configuration states. JTAG pins (TDI, TDO, TMS, TCK) must be pulled to known logic levels if unused.
This page synthesizes distributor stock, lifecycle status, and drop-in alternative information for the EPF8282ALI84-4 that is not aggregated in the manufacturer datasheet alone.
直接替換替代品，適用於 EPF8282ALI84-4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EPF8282ALI84-4 （相同外形與佔位） — 差異在於 Configuration Method, Mounting Type, Operating Temperature, Usable Gates, Package.
EPF8282ALC84-4
✅ 直接替換聯絡詢價
查看資料表 →EPF8282ALC84-4N
✅ 直接替換聯絡詢價
查看資料表 →EPF8282ALC84-3
✅ 直接替換聯絡詢價
查看資料表 →EPF8282ALC84-2
✅ 直接替換聯絡詢價
查看資料表 →EPF8282ALI84-4 最大額定值與電氣特性
| Family | FLEX 8000 |
| Usable Gates (typical) | 2,500 |
| Usable Gates (family max) | 16,000 |
| Logic Elements / Cells | 208 |
| Maximum Operating Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS SRAM |
| Core Supply Voltage | 5 V |
| Speed Grade | -4 |
| 封裝 | 84-pin PLCC |
| 安裝類型 | Through-Hole (PLCC socket) |
| Configuration Method | SRAM (in-circuit reconfigurable) |
| JTAG Boundary Scan | Yes (IEEE 1149.1) |
| 工作溫度 | -40C to +85C (industrial) |
| Lead-Free / RoHS | Non-compliant (legacy PLCC, SnPb finish) |
| Logic Block Architecture | Continuous FastTrack interconnect with EABs |
EPF8282ALI84-4 腳位配置
| 腳位 1 | I/O — General purpose I/O pin |
| 腳位 2 | I/O — General purpose I/O pin |
| 腳位 3 | I/O — General purpose I/O pin |
| 腳位 4 | I/O — General purpose I/O pin |
| 腳位 5 | I/O — General purpose I/O pin |
| 腳位 6 | I/O — General purpose I/O pin |
| 腳位 7 | I/O — General purpose I/O pin |
| 腳位 8 | I/O — General purpose I/O pin |
| 腳位 9 | I/O — General purpose I/O pin |
| 腳位 10 | I/O — General purpose I/O pin |
| 腳位 11 | GND — Ground |
| 腳位 12 | I/O — General purpose I/O pin |
| 腳位 13 | I/O — General purpose I/O pin |
| 腳位 14 | I/O — General purpose I/O pin |
| 腳位 15 | I/O — General purpose I/O pin |
| 腳位 16 | I/O — General purpose I/O pin |
| 腳位 17 | I/O — General purpose I/O pin |
| 腳位 18 | I/O — General purpose I/O pin |
| 腳位 19 | I/O — General purpose I/O pin |
| 腳位 20 | I/O — General purpose I/O pin |
| 腳位 21 | I/O — General purpose I/O pin |
| 腳位 22 | I/O — General purpose I/O pin |
| 腳位 23 | I/O — General purpose I/O pin |
| 腳位 24 | I/O — General purpose I/O pin |
| 腳位 25 | I/O — General purpose I/O pin |
| 腳位 26 | I/O — General purpose I/O pin |
| 腳位 27 | I/O — General purpose I/O pin |
| 腳位 28 | I/O — General purpose I/O pin |
| 腳位 29 | I/O — General purpose I/O pin |
| 腳位 30 | GND — Ground |
| 腳位 31 | I/O — General purpose I/O pin |
| 腳位 32 | I/O — General purpose I/O pin |
| 腳位 33 | I/O — General purpose I/O pin |
| 腳位 34 | I/O — General purpose I/O pin |
| 腳位 35 | I/O — General purpose I/O pin |
| 腳位 36 | I/O — General purpose I/O pin |
| 腳位 37 | I/O — General purpose I/O pin |
| 腳位 38 | I/O — General purpose I/O pin |
| 腳位 39 | I/O — General purpose I/O pin |
| 腳位 40 | I/O — General purpose I/O pin |
| 腳位 41 | I/O — General purpose I/O pin |
| 腳位 42 | VCC — 5V supply voltage |
| 腳位 43 | I/O — General purpose I/O pin |
| 腳位 44 | I/O — General purpose I/O pin |
| 腳位 45 | I/O — General purpose I/O pin |
| 腳位 46 | I/O — General purpose I/O pin |
| 腳位 47 | I/O — General purpose I/O pin |
| 腳位 48 | I/O — General purpose I/O pin |
| 腳位 49 | I/O — General purpose I/O pin |
| 腳位 50 | I/O — General purpose I/O pin |
| 腳位 51 | I/O — General purpose I/O pin |
| 腳位 52 | I/O — General purpose I/O pin |
| 腳位 53 | I/O — General purpose I/O pin |
| 腳位 54 | I/O — General purpose I/O pin |
| 腳位 55 | I/O — General purpose I/O pin |
| 腳位 56 | I/O — General purpose I/O pin |
| 腳位 57 | I/O — General purpose I/O pin |
| 腳位 58 | I/O — General purpose I/O pin |
| 腳位 59 | I/O — General purpose I/O pin |
| 腳位 60 | GND — Ground |
| 腳位 61 | I/O — General purpose I/O pin |
| 腳位 62 | I/O — General purpose I/O pin |
| 腳位 63 | nCONFIG — Configuration control (active low) |
| 腳位 64 | nSTATUS — Configuration status (active low) |
| 腳位 65 | CONF_DONE — Configuration done (open-drain) |
| 腳位 66 | DCLK — Configuration clock |
| 腳位 67 | DATA0 — Configuration data input |
| 腳位 68 | TDI — JTAG test data in |
| 腳位 69 | TDO — JTAG test data out |
| 腳位 70 | TMS — JTAG test mode select |
| 腳位 71 | TCK — JTAG test clock |
| 腳位 72 | I/O — General purpose I/O pin |
| 腳位 73 | I/O — General purpose I/O pin |
| 腳位 74 | I/O — General purpose I/O pin |
| 腳位 75 | I/O — General purpose I/O pin |
| 腳位 76 | I/O — General purpose I/O pin |
| 腳位 77 | I/O — General purpose I/O pin |
| 腳位 78 | I/O — General purpose I/O pin |
| 腳位 79 | I/O — General purpose I/O pin |
| 腳位 80 | I/O — General purpose I/O pin |
| 腳位 81 | I/O — General purpose I/O pin |
| 腳位 82 | I/O — General purpose I/O pin |
| 腳位 83 | I/O — General purpose I/O pin |
| 腳位 84 | I/O — General purpose I/O pin |
典型應用
EPF8282ALI84-4 適用於 7 應用s: Industrial Control Logic, ASIC Prototyping, Legacy 5 V Bus Interface Bridging, Glue-Logic Consolidation, Test and Measurement Equipment, Military / Aerospace Legacy Avionics, Educational FPGA Labs.
Industrial Control Logic
The EPF8282ALI84-4 suits legacy industrial control designs where 5 V tolerance and through-hole PLCC mounting are required. With 208 logic cells and a -40C to +85C industrial temperature range, it absorbs glue logic, state machines, and protocol bridges between microcontrollers and actuators on PC/104, VME, and STD bus backplanes. The 125 MHz fMAX comfortably handles serial-protocol bit-banging and timer-driven control loops, while in-circuit reconfigurability lets field engineers update firmware via JTAG without swapping the board.
推薦
ASIC Prototyping
Engineers use the EPF8282ALI84-4 as an early-cycle ASIC prototype for sub-5K-gate designs in 5 V domains. Its SRAM-based fabric supports unlimited reprogramming, allowing iterative design verification before committing to mask-programmed gate arrays. The 84-pin PLCC package is breadboard-friendly, and the FLEX 8000 family integrates embedded array blocks (EABs) that emulate small ROM/RAM blocks. Quartus II design software continues to support legacy FLEX 8000 designs for migration to newer Cyclone or MAX families.
推薦
Legacy 5 V Bus Interface Bridging
The EPF8282ALI84-4 bridges incompatible 5 V bus standards such as ISA, PC/104, VME, and STD-bus to modern peripherals. Its 5 V TTL-compatible I/Os interface directly to these buses without level shifters, and its 208 logic cells implement multi-protocol state machines, address decoding, and DMA handshaking. The PLCC-84 footprint drops into standard 5 V through-hole designs, and JTAG boundary-scan compliance simplifies in-system test. Modern 3.3 V FPGAs cannot be used here because 5 V inputs would exceed their absolute maximum ratings.
推薦
Glue-Logic Consolidation
Replace 5-15 discrete 74-series TTL/CMOS packages with a single EPF8282ALI84-4 to reduce board area, cost, and signal-integrity risk on legacy 5 V designs. The 208 logic cells absorb address decoding, wait-state generation, interrupt controllers, and peripheral chip-select logic that historically consumed dozens of SSI/MSI packages. The in-system reconfigurability means design changes require only a JTAG download rather than a board re-spin, accelerating development cycles.
推薦
Test and Measurement Equipment
Test equipment manufacturers use the EPF8282ALI84-4 as timing generators, pattern generators, and protocol-analyzer state machines in 5 V test systems. The deterministic FastTrack interconnect routing delivers predictable delay, important for sub-nanosecond timing accuracy in bench instruments. The industrial temperature rating ensures stable operation in lab environments with temperature swings, and the JTAG boundary-scan interface simplifies board-level test.
推薦
Military / Aerospace Legacy Avionics
Ruggedized through-hole PLCC-84 sockets make the EPF8282ALI84-4 a fit for legacy avionics and defense electronics that demand mechanical robustness, 5 V supply tolerance, and industrial temperature ratings. Although the part is obsolete for new commercial designs, defense depots and MRO organizations continue to repair legacy systems with original FLEX 8000 stock. Long-term availability through obsolete distributors sustains these maintenance pipelines.
推薦
Educational FPGA Labs
University digital-logic labs and continuing-education courses continue to use the EPF8282ALI84-4 because its 84-pin PLCC through-hole package is breadboard-friendly and the legacy Quartus II Web Edition toolchain remains free. Students learn VHDL/Verilog design, synthesis, place-and-route, and JTAG programming without dealing with BGA soldering. Despite being obsolete, its low cost on the secondary market keeps it in curricula for introductory VLSI and digital-design courses.
推薦
推薦產品摘要
工程參考資料，適用於 EPF8282ALI84-4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EPF8282ALC84-4 | EPF8282ALC84-4N | EPF8282ALC84-3 | EPF8282ALC84-2 |
|---|---|---|---|---|---|
| Brand | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera |
| Package | 84-pin PLCC | 84-pin PLCC - same | 84-pin PLCC - same | 84-pin PLCC - same | 84-pin PLCC - same |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
| Logic Cells | 208 | 208 | 208 | 208 | 208 |
| Typical Usable Gates | 2,500 | 2,500 | 2,500 | 2,500 | 2,500 |
| Core Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Speed Grade | -4 | -4 | -4 | -3 (faster) | -2 (fastest) |
| Temperature Range | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C | Commercial 0C to +70C | Commercial 0C to +70C |
| Lead-Free Finish | No (SnPb legacy) | No (SnPb) | Yes (Pb-free) | No (SnPb) | No (SnPb) |
主要差異化特點
- Industrial temperature grade (-40C to +85C) (對比EPF8282ALC84-4)
- Through-hole 84-pin PLCC package (對比EPF81500AQC240-4)
- 5 V tolerance for legacy buses (對比Cyclone IV E (modern FPGA))
設計說明
The EPF8282ALI84-4 requires a stable 5 V ±5 % supply on VCC pins (84-pin PLCC has multiple VCC and GND pins for current distribution). During power-up, VCC must rise monotonically to avoid partial configuration. Add a 10 µF bulk capacitor and 0.1 µF decoupling at each VCC pin within 5 mm of the package. The nCONFIG pin must be held low during power-up until VCC is stable; release it after the supply settles to initiate configuration.
Use a PLCC-84 through-hole socket (e.g., 3M 8484 or equivalent) rated for the operating temperature range. Keep all 5 V traces wide (≥ 0.5 mm) to handle transient inrush during configuration. JTAG chain routing should keep TDI/TDO traces under 50 mm and avoid parallel routing with switching signals. Configure unused I/O pins as outputs driving low to minimize supply noise during configuration.
Do not substitute a 3.3 V FPGA in place of this 5 V part - 5 V signals on input pins would exceed absolute maximum ratings and damage the modern device. Avoid using the EPF8282ALC84-4 (commercial temp) in industrial environments outside 0C to +70C - use only I-grade variants. The -4 speed grade is the slowest; if timing closure fails, migrate to the -3 or -2 speed grade in the same family before redesigning.
合規資訊
Legacy PLCC package with SnPb finish, not RoHS compliant. Choose EPF8282ALC84-4N variant for lead-free RoHS-compliance. No AEC-Q100 automotive qualification.
