EPF8282ALC84-2 - FLEX 8000 FPGA, 2.5K Gates, 84-PLCC | Intel / Altera
MPN: EPF8282ALC84-2 ✗ Cuối đờiEPF8282ALC84-2 Tóm tắt
An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that the user can define after manufacture via a configuration bitstream. The FLEX 8000 family sits within the programmable-logic hierarchy as: FPGA -> programmable logic -> logic IC -> integrated circuit. FPGAs differ from CPLDs in offering register-rich, SRAM-based logic optimized for higher density and finer-grained arithmetic, whereas CPLDs are typically non-volatile and better suited to wide combinatorial decode logic. Within the broader PLD market, FPGAs occupy the high-density, high-register-count tier between small CPLDs and ASICs.
Key features of the EPF8282ALC84-2 include 26 Logic Array Blocks (LABs), 208 flip-flops, 68 I/O pins, in-circuit reconfigurability (ICR) via external configuration devices (such as the EPC1 or EPC1441), and built-in JTAG (IEEE 1149.1) boundary-scan support. The device operates from a 5.0 V core supply and is offered in a commercial temperature grade. Its SRAM-based fabric requires configuration on every power-up but enables unlimited re-programmability, making it suitable for prototyping and field-upgradable systems.
The FLEX 8000 architecture uses a hierarchical interconnect structure with fast row and column channels, providing predictable timing for registered designs. Each LAB contains 8 logic elements, and the 26-LAB array is well suited to 16-bit datapath designs, address decoding, and FIFO controllers. The 84-pin PLCC package with J-leads is a through-hole-friendly surface-mount format that simplifies prototyping on socketed carriers while still supporting reflow assembly.
Typical applications include industrial control glue logic, telecommunications line-card glue, military/aerospace retrofit boards (where long-life FLEX 8000 stocks are still maintained), legacy ASIC replacement, bus-bridge logic between microprocessors and peripherals, and state-machine consolidation on multi-board systems. Designers value the FLEX 8000 series for its deterministic timing, JTAG-driven in-system programmability, and abundant third-party toolchain support (MAX+PLUS II, Quartus II legacy support).
When designing with this part, note that the FLEX 8000 family is mature and recommended for new designs only when second-source supply and pin-compatible alternatives are required. For new greenfield designs, Intel recommends the MAX 10 or Cyclone IV series. Always include a configuration PROM (EPC1/EPC1441) in the reference schematic, and follow the JTAG chain recommendations in the FLEX 8000 datasheet for multi-device boards.
This page synthesizes distributor pricing, same-family drop-in alternatives (including pin-compatible speed grades -2/-3/-4), and practical design notes not consolidated in a single place on the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho EPF8282ALC84-2 — 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 EPF8282ALC84-2 (cùng hình factor và footprint) — khác nhau ở Configuration Method, Mounting Type, Speed Grade, Package, Operating Temperature.
EPF8282ALC84-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8282ATC144-3
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
EPF8282ATC100-3
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPF8282ALC84-2 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Device Logic Elements / FFs | 208 |
| Usable Gates | 2,500 |
| Logic Array Blocks (LABs) | 26 |
| Maximum User I/Os | 68 |
| Process Technology | 0.42 micrometer CMOS, SRAM-based |
| Hộp | 84-pin LCC (J-Lead), PLCC-84 |
| Core Supply Voltage | 5.0 V |
| Configuration Method | External configuration device (EPC1/EPC1441) or JTAG |
| In-Circuit Reconfigurability | Yes (ICR) |
| JTAG Support | IEEE 1149.1 boundary-scan |
| Temperature Grade (this part) | Commercial (suffix 'C' in package code) |
| Speed Grade | -2 |
| Trạng thái RoHS | Unknown (legacy Altera part, pre-RoHS transition) |
| Lead-Free | Unknown |
| Kiểu lắp đặt | Surface Mount (J-Lead) |
Cấu hình chân EPF8282ALC84-2
| Chân 1 | I/O — User I/O pin (bank A) |
| Chân 2 | I/O — User I/O pin (bank A) |
| Chân 3 | I/O — User I/O pin (bank A) |
| Chân 4 | I/O — User I/O pin (bank A) |
| Chân 5 | I/O — User I/O pin (bank A) |
| Chân 6 | I/O — User I/O pin (bank A) |
| Chân 7 | VCC — 5.0 V core supply |
| Chân 8 | I/O — User I/O pin (bank A) |
| Chân 9 | I/O — User I/O pin (bank A) |
| Chân 10 | I/O — User I/O pin (bank A) |
| Chân 11 | I/O — User I/O pin (bank A) |
| Chân 12 | GND — Ground |
| Chân 13 | I/O — User I/O pin (bank B) |
| Chân 14 | I/O — User I/O pin (bank B) |
| Chân 15 | I/O — User I/O pin (bank B) |
| Chân 16 | I/O — User I/O pin (bank B) |
| Chân 17 | I/O — User I/O pin (bank B) |
| Chân 18 | I/O — User I/O pin (bank B) |
| Chân 19 | I/O — User I/O pin (bank B) |
| Chân 20 | I/O — User I/O pin (bank B) |
| Chân 21 | VCC — 5.0 V core supply |
| Chân 22 | I/O — User I/O pin (bank B) |
| Chân 23 | I/O — User I/O pin (bank B) |
| Chân 24 | I/O — User I/O pin (bank B) |
| Chân 25 | I/O — User I/O pin (bank B) |
| Chân 26 | GND — Ground |
| Chân 27 | I/O — User I/O pin (bank C) |
| Chân 28 | I/O — User I/O pin (bank C) |
| Chân 29 | I/O — User I/O pin (bank C) |
| Chân 30 | I/O — User I/O pin (bank C) |
| Chân 31 | I/O — User I/O pin (bank C) |
| Chân 32 | I/O — User I/O pin (bank C) |
| Chân 33 | I/O — User I/O pin (bank C) |
| Chân 34 | I/O — User I/O pin (bank C) |
| Chân 35 | VCC — 5.0 V core supply |
| Chân 36 | I/O — User I/O pin (bank C) |
| Chân 37 | I/O — User I/O pin (bank C) |
| Chân 38 | I/O — User I/O pin (bank C) |
| Chân 39 | I/O — User I/O pin (bank C) |
| Chân 40 | GND — Ground |
| Chân 41 | I/O — User I/O pin (bank D) |
| Chân 42 | I/O — User I/O pin (bank D) |
| Chân 43 | I/O — User I/O pin (bank D) |
| Chân 44 | I/O — User I/O pin (bank D) |
| Chân 45 | I/O — User I/O pin (bank D) |
| Chân 46 | I/O — User I/O pin (bank D) |
| Chân 47 | I/O — User I/O pin (bank D) |
| Chân 48 | I/O — User I/O pin (bank D) |
| Chân 49 | VCC — 5.0 V core supply |
| Chân 50 | I/O — User I/O pin (bank D) |
| Chân 51 | I/O — User I/O pin (bank D) |
| Chân 52 | I/O — User I/O pin (bank D) |
| Chân 53 | I/O — User I/O pin (bank D) |
| Chân 54 | GND — Ground |
| Chân 55 | I/O — User I/O pin (bank A) |
| Chân 56 | I/O — User I/O pin (bank A) |
| Chân 57 | I/O — User I/O pin (bank A) |
| Chân 58 | I/O — User I/O pin (bank A) |
| Chân 59 | I/O — User I/O pin (bank A) |
| Chân 60 | I/O — User I/O pin (bank A) |
| Chân 61 | I/O — User I/O pin (bank A) |
| Chân 62 | VCC — 5.0 V core supply |
| Chân 63 | nCONFIG — Configuration control (active-low) |
| Chân 64 | nSTATUS — Configuration status (active-low) |
| Chân 65 | CONFIG_DONE — Configuration complete status |
| Chân 66 | DCLK — Configuration clock input |
| Chân 67 | DATA0 — Configuration data input (serial) |
| 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 | GND — Ground |
| Chân 73 | DEV_CLRn — Device-wide clear (active-low) |
| Chân 74 | DEV_OE — Device-wide output enable |
| Chân 75 | I/O — User I/O pin (bank B) |
| Chân 76 | I/O — User I/O pin (bank B) |
| Chân 77 | I/O — User I/O pin (bank B) |
| Chân 78 | I/O — User I/O pin (bank B) |
| Chân 79 | I/O — User I/O pin (bank B) |
| Chân 80 | I/O — User I/O pin (bank B) |
| Chân 81 | I/O — User I/O pin (bank B) |
| Chân 82 | I/O — User I/O pin (bank B) |
| Chân 83 | GND — Ground |
| Chân 84 | VCC — 5.0 V core supply |
Ứng dụng tiêu biểu
EPF8282ALC84-2 phù hợp cho 6 Áp dụngs: Industrial Glue Logic Replacement, Legacy Telecom Line-Card Interface, Military / Aerospace Retrofit Logic, Bus-Bridge and Protocol Converter, State Machine Consolidation, ASIC Replacement for Low-Volume Production.
Industrial Glue Logic Replacement
The EPF8282ALC84-2 fits industrial glue-logic replacement because its 2,500 usable gates and 208 flip-flops consolidate dozens of 74-series TTL parts (decoders, muxes, latches) onto a single 5.0 V SRAM-based device. The 68 user I/Os handle address/data bus buffering, chip-select decoding, and handshake logic between microprocessors and peripherals. FLEX 8000 ICR (in-circuit reconfigurability) lets field engineers update logic via JTAG without desoldering, critical for installed industrial PLCs and machine controllers where downtime is expensive.
Được đề xuất
Legacy Telecom Line-Card Interface
Telecom line cards built in the late 1990s and early 2000s frequently use the EPF8282ALC84-2 to bridge TDM backplanes to framers and codecs. The 68 I/Os comfortably handle 8-bit parallel TDM buses plus framing, alarm, and clock-distribution signals. Its 5.0 V TTL I/O matches legacy line-card bus voltages directly, eliminating level-shifters. For long-life telecom platforms, FLEX 8000 is preferred over newer families because it preserves the original BOM and avoids requalification cycles on carrier-grade equipment.
Được đề xuất
Military / Aerospace Retrofit Logic
The EPF8282ALC84-2 is widely used in military and aerospace retrofit programs where long-life-cycle support (15-25 years) outweighs the benefits of modern families. Its mature 0.42 micrometer CMOS process has well-characterized radiation and temperature behavior, and its 5.0 V core is robust against supply transients. The 84-pin PLCC with J-leads is also accepted on legacy avionics boards designed for through-hole-friendly sockets. Designers maintain FLEX 8000 designs to avoid re-qualifying flight hardware, and distributors stock inventory for defense maintenance channels.
Được đề xuất
Bus-Bridge and Protocol Converter
The EPF8282ALC84-2 is well suited as a bus-bridge between microprocessors and peripherals using mismatched protocols (e.g., ISA-to-PC/104, VME-to-local bus, custom backplane-to-DSP). The 208 flip-flops handle FIFOs and handshaking registers, while 26 LABs implement the state machines and address-mapping logic. Its SRAM-based fabric allows late-stage bug fixes via in-system JTAG reprogramming, a key advantage over mask-programmed ASIC bridges that require respin for any logic change.
Được đề xuất
State Machine Consolidation
Designers use the EPF8282ALC84-2 to consolidate multiple discrete PAL/GAL state machines into a single 5.0 V device, reducing board area and improving timing predictability. With 208 flip-flops and 26 LABs, it can host 8-12 independent Moore or Mealy state machines with up to 16 states each, alongside combinational glue. This is a common refactoring task on legacy boards where discrete PLDs have proliferated; consolidating into one FLEX 8000 part simplifies inventory, reduces power, and enables JTAG-driven in-system updates.
Được đề xuất
ASIC Replacement for Low-Volume Production
For low-volume production (typically under 5,000 units annually), the EPF8282ALC84-2 replaces obsolete or end-of-life ASICs without NRE charges. Its 2,500-gate capacity maps to many mid-complexity ASIC designs, and the SRAM-based fabric allows per-unit personality changes (different configuration bitstreams for product variants). The 84-pin PLCC package supports both socketed prototyping and reflow assembly, simplifying transition from engineering to manufacturing. This use case is common in industrial instrumentation and specialty test equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8282ALC84-2 — 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 | EPF8282ALC84-3 | EPF8282ALC84-4 |
|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | 84-pin LCC (J-Lead), PLCC-84 | 84-pin LCC (J-Lead), PLCC-84 - same | 84-pin LCC (J-Lead), PLCC-84 - same |
| Usable Gates | 2,500 | 2,500 | 2,500 |
| Logic Elements / FFs | 208 | 208 | 208 |
| LABs | 26 | 26 | 26 |
| User I/Os | 68 | 68 | 68 |
| Speed Grade | -2 (fastest) | -3 (~85% of -2 speed) | -4 (~70-80% of -2 speed) |
| Core Voltage | 5.0 V | 5.0 V | 5.0 V |
| Configuration | EPC1 / EPC1441 / JTAG | EPC1 / EPC1441 / JTAG | EPC1 / EPC1441 / JTAG |
| Lifecycle | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- Pin-compatible speed-grade flexibility within FLEX 8000 family (vsEPF8282ALC84-3)
- Mature 0.42 micrometer CMOS process with long-term support channels (vsMAX 10 (modern replacement))
- JTAG-driven in-circuit reconfigurability via EPC1/EPC1441 (vsDiscrete PAL/GAL state machines)
Ghi chú thiết kế
The EPF8282ALC84-2 requires a clean 5.0 V +/- 5% supply; per the FLEX 8000 datasheet, bulk decoupling of at least 22 uF tantalum plus 0.1 uF ceramic per VCC pin is recommended, plus a ferrite bead on the supply feed. In-circuit reconfigurability means the device draws surge currents during configuration; allow at least 100 mA headroom on the 5 V rail. Add a power-on reset supervisor (e.g., MAX811) tied to nCONFIG to ensure clean startup.
The 84-pin PLCC with J-leads has a 1.27 mm pitch; per Altera layout guidelines, keep all signal traces short, use a continuous ground plane on layer 2, and place the EPC1/EPC1441 configuration PROM within 50 mm of the FPGA's DCLK/DATA0 pins. JTAG chain integrity requires 10 kohm pull-ups on TMS and TDI to VCC, and a 10 kohm pull-down on TCK to GND, per the IEEE 1149.1 specification. The PLCC socket should be a low-profile through-hole type (e.g., 3M 8434) for field-replaceable assemblies.
Three common pitfalls with the EPF8282ALC84-2: (1) Forgetting the configuration PROM - the SRAM-based fabric has no on-chip non-volatile storage, so without an EPC1/EPC1441 the device will not function on power-up; (2) Mixing 5 V and 3.3 V signals without level-shifters - FLEX 8000 I/O is 5 V TTL-only; (3) Ignoring ICR timing - in-system JTAG reconfiguration requires nCONFIG held low during programming; failing to control nCONFIG can cause partial configuration and undefined behavior.
Thông tin tuân thủ
Legacy Altera part pre-dating RoHS transition. RoHS/REACH compliance status not stated in distributor listings or the FLEX 8000 datasheet; original parts may be SnPb finish. AEC-Q100 not applicable (FPGA not automotive-qualified).
