EPF8282ALI84-4 - FLEX 8000 FPGA 2.5K Gates | Intel / Altera
MPN: EPF8282ALI84-4 ✗ Cuối đờiEPF8282ALI84-4 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho EPF8282ALI84-4 — 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 EPF8282ALI84-4 (cùng hình factor và footprint) — khác nhau ở Configuration Method, Mounting Type, Operating Temperature, Usable Gates, Package.
EPF8282ALC84-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-4N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALI84-4 Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 84-pin PLCC |
| Kiểu lắp đặt | Through-Hole (PLCC socket) |
| Configuration Method | SRAM (in-circuit reconfigurable) |
| JTAG Boundary Scan | Yes (IEEE 1149.1) |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Lead-Free / RoHS | Non-compliant (legacy PLCC, SnPb finish) |
| Logic Block Architecture | Continuous FastTrack interconnect with EABs |
Cấu hình chân EPF8282ALI84-4
| Chân 1 | I/O — General purpose I/O pin |
| Chân 2 | I/O — General purpose I/O pin |
| Chân 3 | I/O — General purpose I/O pin |
| Chân 4 | I/O — General purpose I/O pin |
| Chân 5 | I/O — General purpose I/O pin |
| Chân 6 | I/O — General purpose I/O pin |
| Chân 7 | I/O — General purpose I/O pin |
| Chân 8 | I/O — General purpose I/O pin |
| Chân 9 | I/O — General purpose I/O pin |
| Chân 10 | I/O — General purpose I/O pin |
| Chân 11 | GND — Ground |
| Chân 12 | I/O — General purpose I/O pin |
| Chân 13 | I/O — General purpose I/O pin |
| Chân 14 | I/O — General purpose I/O pin |
| Chân 15 | I/O — General purpose I/O pin |
| Chân 16 | I/O — General purpose I/O pin |
| Chân 17 | I/O — General purpose I/O pin |
| Chân 18 | I/O — General purpose I/O pin |
| Chân 19 | I/O — General purpose I/O pin |
| Chân 20 | I/O — General purpose I/O pin |
| Chân 21 | I/O — General purpose I/O pin |
| Chân 22 | I/O — General purpose I/O pin |
| Chân 23 | I/O — General purpose I/O pin |
| Chân 24 | I/O — General purpose I/O pin |
| Chân 25 | I/O — General purpose I/O pin |
| Chân 26 | I/O — General purpose I/O pin |
| Chân 27 | I/O — General purpose I/O pin |
| Chân 28 | I/O — General purpose I/O pin |
| Chân 29 | I/O — General purpose I/O pin |
| Chân 30 | GND — Ground |
| Chân 31 | I/O — General purpose I/O pin |
| Chân 32 | I/O — General purpose I/O pin |
| Chân 33 | I/O — General purpose I/O pin |
| Chân 34 | I/O — General purpose I/O pin |
| Chân 35 | I/O — General purpose I/O pin |
| Chân 36 | I/O — General purpose I/O pin |
| Chân 37 | I/O — General purpose I/O pin |
| Chân 38 | I/O — General purpose I/O pin |
| Chân 39 | I/O — General purpose I/O pin |
| Chân 40 | I/O — General purpose I/O pin |
| Chân 41 | I/O — General purpose I/O pin |
| Chân 42 | VCC — 5V supply voltage |
| Chân 43 | I/O — General purpose I/O pin |
| Chân 44 | I/O — General purpose I/O pin |
| Chân 45 | I/O — General purpose I/O pin |
| Chân 46 | I/O — General purpose I/O pin |
| Chân 47 | I/O — General purpose I/O pin |
| Chân 48 | I/O — General purpose I/O pin |
| Chân 49 | I/O — General purpose I/O pin |
| Chân 50 | I/O — General purpose I/O pin |
| Chân 51 | I/O — General purpose I/O pin |
| Chân 52 | I/O — General purpose I/O pin |
| Chân 53 | I/O — General purpose I/O pin |
| Chân 54 | I/O — General purpose I/O pin |
| Chân 55 | I/O — General purpose I/O pin |
| Chân 56 | I/O — General purpose I/O pin |
| Chân 57 | I/O — General purpose I/O pin |
| Chân 58 | I/O — General purpose I/O pin |
| Chân 59 | I/O — General purpose I/O pin |
| Chân 60 | GND — Ground |
| Chân 61 | I/O — General purpose I/O pin |
| Chân 62 | I/O — General purpose I/O pin |
| Chân 63 | nCONFIG — Configuration control (active low) |
| Chân 64 | nSTATUS — Configuration status (active low) |
| Chân 65 | CONF_DONE — Configuration done (open-drain) |
| Chân 66 | DCLK — Configuration clock |
| Chân 67 | DATA0 — Configuration data input |
| Chân 68 | TDI — JTAG test data in |
| Chân 69 | TDO — JTAG test data out |
| Chân 70 | TMS — JTAG test mode select |
| Chân 71 | TCK — JTAG test clock |
| Chân 72 | I/O — General purpose I/O pin |
| Chân 73 | I/O — General purpose I/O pin |
| Chân 74 | I/O — General purpose I/O pin |
| Chân 75 | I/O — General purpose I/O pin |
| Chân 76 | I/O — General purpose I/O pin |
| Chân 77 | I/O — General purpose I/O pin |
| Chân 78 | I/O — General purpose I/O pin |
| Chân 79 | I/O — General purpose I/O pin |
| Chân 80 | I/O — General purpose I/O pin |
| Chân 81 | I/O — General purpose I/O pin |
| Chân 82 | I/O — General purpose I/O pin |
| Chân 83 | I/O — General purpose I/O pin |
| Chân 84 | I/O — General purpose I/O pin |
Ứng dụng tiêu biểu
EPF8282ALI84-4 phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8282ALI84-4 — 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 | 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) |
Bảo phân biệt quan trọng
- Industrial temperature grade (-40C to +85C) (vsEPF8282ALC84-4)
- Through-hole 84-pin PLCC package (vsEPF81500AQC240-4)
- 5 V tolerance for legacy buses (vsCyclone IV E (modern FPGA))
Ghi chú thiết kế
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.
Thông tin tuân thủ
Legacy PLCC package with SnPb finish, not RoHS compliant. Choose EPF8282ALC84-4N variant for lead-free RoHS-compliance. No AEC-Q100 automotive qualification.
