EPF8820ATI144-2 - FLEX 8000 FPGA 672-LE PQFP Industrial | Intel
MPN: EPF8820ATI144-2 ✗ Cuối đờiEPF8820ATI144-2 Tóm tắt
An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells, allowing the designer to implement arbitrary digital logic after PCB fabrication. In the system hierarchy, the FLEX 8000 family sits under SRAM-based programmable logic -> programmable logic device -> logic IC -> integrated circuit. The EPF8820 targets glue-logic, bus-interface, and low-to-medium-density state-machine applications where a small ASIC would otherwise be required.
Key features include 1.7 ns pin-to-pin propagation delay through the FastTrack interconnect, 84 Logic Array Blocks (LABs), continuous FastTrack routing for predictable timing, and built-in JTAG (IEEE 1149.1) boundary-scan support. The 0.50 mm terminal-pitch PQFP-144 (S-PQFP-G144) package supports surface mounting and is compatible with standard SMT assembly lines. The device is configured at power-up from a serial PROM or microcontroller via the FLEX 8000 passive serial/parallel configuration scheme.
Architecturally, the EPF8820A uses an SRAM configuration cell, requiring an external boot device on every power cycle. Each LE contains a 4-input LUT, a programmable register, and a carry chain for arithmetic. The 84 LABs are arranged in rows and columns around the periphery, with 16 LEs per LAB and dedicated cascade chains for wide fan-in functions. The I/O ring supports 5V-tolerant inputs on a 5V VCCIO, plus programmable slew-rate and pull-up resistors.
Typical applications include industrial control glue logic, telecommunications backplane interface bridging, custom peripheral expansion for embedded microprocessors, and legacy 5V system upgrades that cannot move to 3.3V FPGAs. The 1.7 ns tPD also makes it useful for fast custom-state-machine replacement of discrete 74-series logic.
When designing, treat the EPF8820ATI144-2 as an SRAM FPGA: a configuration source (EPC1, EPC2, or a microcontroller) is mandatory because internal SRAM is volatile. Ensure VCC ramps monotonically per the FLEX 8000 handbook; an incomplete power-up can corrupt configuration and cause bus contention on the outputs. Place a 0.1 uF decoupling capacitor at every VCC/VCCIO pin and provide a low-impedance ground plane.
This page consolidates distributor pricing, real FLEX 8000 family drop-in alternatives, and practical design guidance beyond what is reproduced in the legacy Altera datasheet.
Bộ thay thế dễ dàng lắp đặt cho EPF8820ATI144-2 — 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 EPF8820ATI144-2 (cùng hình factor và footprint) — khác nhau ở Package, Process Technology, Operating Temperature, Configuration Method, Usable Gates.
EPF8820ATC144-2
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPF8820ATI144-1
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPF8820ATC144-3
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPF8820ATC144-4
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPF81188AQI208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ATI144-2 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Device | EPF8820A |
| Logic Elements (LEs) | 672 |
| Logic Array Blocks (LABs) | 84 |
| User I/Os | 112 |
| Dedicated Inputs | 4 |
| Propagation Delay (tPD) | 1.7 ns |
| Supply Voltage (VCCINT) | 4.5 V to 5.5 V (5 V nominal) |
| Configuration Technology | SRAM (volatile, requires external boot device) |
| Configuration Modes | Passive Serial, Passive Parallel, Active Serial |
| Temperature Grade | Industrial |
| Hộp | 144-pin PQFP (S-PQFP-G144) |
| Terminal Pitch | 0.500 mm |
| Terminal Form | Gull Wing |
| Kiểu lắp đặt | Surface Mount |
| JTAG (IEEE 1149.1) | Yes |
| Process Technology | CMOS |
Cấu hình chân EPF8820ATI144-2
| Chân 1 | I/O — User I/O (general purpose, bank 1) |
| Chân 2 | I/O — User I/O (general purpose, bank 1) |
| Chân 3 | I/O — User I/O (general purpose, bank 1) |
| Chân 4 | VCCINT — Core supply (5V nominal) |
| Chân 5 | I/O — User I/O (general purpose, bank 1) |
| Chân 6 | GND — Ground |
| Chân 7 | I/O — User I/O (general purpose, bank 1) |
| Chân 8 | I/O — User I/O (general purpose, bank 1) |
| Chân 9 | I/O — User I/O (general purpose, bank 1) |
| Chân 10 | I/O — User I/O (general purpose, bank 1) |
| Chân 11 | I/O — User I/O (general purpose, bank 1) |
| Chân 12 | nSTATUS — Configuration status (open-drain, pulled-up) |
| Chân 13 | I/O — User I/O (general purpose, bank 2) |
| Chân 14 | I/O — User I/O (general purpose, bank 2) |
| Chân 15 | I/O — User I/O (general purpose, bank 2) |
| Chân 16 | I/O — User I/O (general purpose, bank 2) |
| Chân 17 | I/O — User I/O (general purpose, bank 2) |
| Chân 18 | I/O — User I/O (general purpose, bank 2) |
| Chân 19 | I/O — User I/O (general purpose, bank 2) |
| Chân 20 | I/O — User I/O (general purpose, bank 2) |
| Chân 21 | GND — Ground |
| Chân 22 | I/O — User I/O (general purpose, bank 2) |
| Chân 23 | I/O — User I/O (general purpose, bank 2) |
| Chân 24 | I/O — User I/O (general purpose, bank 2) |
| Chân 25 | I/O — User I/O (general purpose, bank 2) |
| Chân 26 | I/O — User I/O (general purpose, bank 2) |
| Chân 27 | VCCINT — Core supply (5V nominal) |
| Chân 28 | I/O — User I/O (general purpose, bank 2) |
| Chân 29 | I/O — User I/O (general purpose, bank 2) |
| Chân 30 | I/O — User I/O (general purpose, bank 2) |
| Chân 31 | I/O — User I/O (general purpose, bank 2) |
| Chân 32 | I/O — User I/O (general purpose, bank 2) |
| Chân 33 | GND — Ground |
| Chân 34 | I/O — User I/O (general purpose, bank 3) |
| Chân 35 | I/O — User I/O (general purpose, bank 3) |
| Chân 36 | I/O — User I/O (general purpose, bank 3) |
| Chân 37 | DCLK — Configuration clock input |
| Chân 38 | I/O — User I/O (general purpose, bank 3) |
| Chân 39 | I/O — User I/O (general purpose, bank 3) |
| Chân 40 | I/O — User I/O (general purpose, bank 3) |
| Chân 41 | I/O — User I/O (general purpose, bank 3) |
| Chân 42 | I/O — User I/O (general purpose, bank 3) |
| Chân 43 | VCCINT — Core supply (5V nominal) |
| Chân 44 | I/O — User I/O (general purpose, bank 3) |
| Chân 45 | I/O — User I/O (general purpose, bank 3) |
| Chân 46 | I/O — User I/O (general purpose, bank 3) |
| Chân 47 | I/O — User I/O (general purpose, bank 3) |
| Chân 48 | I/O — User I/O (general purpose, bank 3) |
| Chân 49 | I/O — User I/O (general purpose, bank 3) |
| Chân 50 | I/O — User I/O (general purpose, bank 3) |
| Chân 51 | I/O — User I/O (general purpose, bank 3) |
| Chân 52 | I/O — User I/O (general purpose, bank 3) |
| Chân 53 | GND — Ground |
| Chân 54 | I/O — User I/O (general purpose, bank 4) |
| Chân 55 | I/O — User I/O (general purpose, bank 4) |
| Chân 56 | DATA — Configuration data input |
| Chân 57 | I/O — User I/O (general purpose, bank 4) |
| Chân 58 | I/O — User I/O (general purpose, bank 4) |
| Chân 59 | I/O — User I/O (general purpose, bank 4) |
| Chân 60 | I/O — User I/O (general purpose, bank 4) |
| Chân 61 | I/O — User I/O (general purpose, bank 4) |
| Chân 62 | I/O — User I/O (general purpose, bank 4) |
| Chân 63 | VCCINT — Core supply (5V nominal) |
| Chân 64 | I/O — User I/O (general purpose, bank 4) |
| Chân 65 | I/O — User I/O (general purpose, bank 4) |
| Chân 66 | I/O — User I/O (general purpose, bank 4) |
| Chân 67 | I/O — User I/O (general purpose, bank 4) |
| Chân 68 | I/O — User I/O (general purpose, bank 4) |
| Chân 69 | I/O — User I/O (general purpose, bank 4) |
| Chân 70 | I/O — User I/O (general purpose, bank 4) |
| Chân 71 | I/O — User I/O (general purpose, bank 4) |
| Chân 72 | I/O — User I/O (general purpose, bank 4) |
| Chân 73 | GND — Ground |
| Chân 74 | nCONFIG — Configuration control input (active-low) |
| Chân 75 | I/O — User I/O (general purpose, bank 5) |
| Chân 76 | I/O — User I/O (general purpose, bank 5) |
| Chân 77 | I/O — User I/O (general purpose, bank 5) |
| Chân 78 | I/O — User I/O (general purpose, bank 5) |
| Chân 79 | I/O — User I/O (general purpose, bank 5) |
| Chân 80 | I/O — User I/O (general purpose, bank 5) |
| Chân 81 | I/O — User I/O (general purpose, bank 5) |
| Chân 82 | I/O — User I/O (general purpose, bank 5) |
| Chân 83 | VCCINT — Core supply (5V nominal) |
| Chân 84 | I/O — User I/O (general purpose, bank 5) |
| Chân 85 | I/O — User I/O (general purpose, bank 5) |
| Chân 86 | I/O — User I/O (general purpose, bank 5) |
| Chân 87 | I/O — User I/O (general purpose, bank 5) |
| Chân 88 | I/O — User I/O (general purpose, bank 5) |
| Chân 89 | I/O — User I/O (general purpose, bank 5) |
| Chân 90 | I/O — User I/O (general purpose, bank 5) |
| Chân 91 | I/O — User I/O (general purpose, bank 5) |
| Chân 92 | I/O — User I/O (general purpose, bank 5) |
| Chân 93 | GND — Ground |
| Chân 94 | I/O — User I/O (general purpose, bank 6) |
| Chân 95 | I/O — User I/O (general purpose, bank 6) |
| Chân 96 | I/O — User I/O (general purpose, bank 6) |
| Chân 97 | TDI — JTAG test data input |
| Chân 98 | I/O — User I/O (general purpose, bank 6) |
| Chân 99 | I/O — User I/O (general purpose, bank 6) |
| Chân 100 | I/O — User I/O (general purpose, bank 6) |
| Chân 101 | I/O — User I/O (general purpose, bank 6) |
| Chân 102 | I/O — User I/O (general purpose, bank 6) |
| Chân 103 | TMS — JTAG test mode select |
| Chân 104 | VCCINT — Core supply (5V nominal) |
| Chân 105 | I/O — User I/O (general purpose, bank 6) |
| Chân 106 | I/O — User I/O (general purpose, bank 6) |
| Chân 107 | I/O — User I/O (general purpose, bank 6) |
| Chân 108 | I/O — User I/O (general purpose, bank 6) |
| Chân 109 | TCK — JTAG test clock |
| Chân 110 | I/O — User I/O (general purpose, bank 6) |
| Chân 111 | I/O — User I/O (general purpose, bank 6) |
| Chân 112 | I/O — User I/O (general purpose, bank 6) |
| Chân 113 | I/O — User I/O (general purpose, bank 6) |
| Chân 114 | I/O — User I/O (general purpose, bank 6) |
| Chân 115 | GND — Ground |
| Chân 116 | I/O — User I/O (general purpose, bank 7) |
| Chân 117 | I/O — User I/O (general purpose, bank 7) |
| Chân 118 | I/O — User I/O (general purpose, bank 7) |
| Chân 119 | TDO — JTAG test data output |
| Chân 120 | I/O — User I/O (general purpose, bank 7) |
| Chân 121 | I/O — User I/O (general purpose, bank 7) |
| Chân 122 | I/O — User I/O (general purpose, bank 7) |
| Chân 123 | I/O — User I/O (general purpose, bank 7) |
| Chân 124 | I/O — User I/O (general purpose, bank 7) |
| Chân 125 | I/O — User I/O (general purpose, bank 7) |
| Chân 126 | I/O — User I/O (general purpose, bank 7) |
| Chân 127 | VCCINT — Core supply (5V nominal) |
| Chân 128 | I/O — User I/O (general purpose, bank 7) |
| Chân 129 | I/O — User I/O (general purpose, bank 7) |
| Chân 130 | I/O — User I/O (general purpose, bank 7) |
| Chân 131 | I/O — User I/O (general purpose, bank 7) |
| Chân 132 | I/O — User I/O (general purpose, bank 7) |
| Chân 133 | I/O — User I/O (general purpose, bank 7) |
| Chân 134 | nCE — Chip enable (active-low, used in multi-device configuration) |
| Chân 135 | I/O — User I/O (general purpose, bank 7) |
| Chân 136 | I/O — User I/O (general purpose, bank 7) |
| Chân 137 | GND — Ground |
| Chân 138 | I/O — User I/O (general purpose, bank 8) |
| Chân 139 | I/O — User I/O (general purpose, bank 8) |
| Chân 140 | I/O — User I/O (general purpose, bank 8) |
| Chân 141 | INPUT — Dedicated input (high-speed, clock/clear) |
| Chân 142 | INPUT — Dedicated input (high-speed, clock/clear) |
| Chân 143 | INPUT — Dedicated input (high-speed, clock/clear) |
| Chân 144 | INPUT — Dedicated input (high-speed, clock/clear) |
Ứng dụng tiêu biểu
EPF8820ATI144-2 phù hợp cho 6 Áp dụngs: Industrial Glue Logic Replacement, Legacy 5V Telecom Backplane Bridging, Custom Peripheral Expansion for Embedded CPUs, Fast State-Machine Replacement, Test and Measurement Instrument Logic, Aerospace and Defense Legacy Avionics.
Industrial Glue Logic Replacement
The EPF8820ATI144-2's 672 logic elements and 1.7 ns tPD make it a strong drop-in replacement for banks of 74-series glue logic on 5V industrial backplanes. Its industrial temperature grade ensures reliable operation in factory-floor enclosures from -40C to +85C. Configure the device from an EPC1/EPC2 serial PROM and use the 112 user I/Os to consolidate address decoding, bus arbitration, and interrupt steering that previously required dozens of discrete gates.
Được đề xuất
Legacy 5V Telecom Backplane Bridging
5V telecommunications backplanes that pre-date the 3.3V transition still rely on FLEX 8000 devices for protocol bridging and clock-domain crossing. The EPF8820ATI144-2 operates from a single 5V rail and supports JTAG (IEEE 1149.1) boundary-scan for in-system test, which is critical for telecom card maintenance. Use it to bridge TTL and CMOS bus standards, generate proprietary framing signals, or implement custom serial protocols unavailable in standard logic ICs.
Được đề xuất
Custom Peripheral Expansion for Embedded CPUs
The EPF8820ATI144-2 can extend an embedded 8051, x86, or Motorola 68k processor with custom peripherals - timers, PWM, custom bus masters, or proprietary interfaces - without requiring a new ASIC. The 1.7 ns combinatorial delay supports peripheral cycles up to 50 MHz, and the FLEX 8000 passive-parallel configuration allows in-system reconfiguration from the host CPU. This was a common architecture in 1990s industrial PCs and remains useful for legacy support.
Được đề xuất
Fast State-Machine Replacement
Complex Mealy and Moore state machines with 20+ states become impractical in discrete 74LS/74HC logic but fit easily into 672 LEs. The EPF8820ATI144-2's 1.7 ns tPD allows state transitions at clock rates up to 50 MHz, supporting fast custom controllers, protocol decoders, and sequencers. Engineers often use one FLEX 8000 to replace several pages of discrete state-machine schematics on a single 5V board.
Được đề xuất
Test and Measurement Instrument Logic
Bench-top test equipment in the late 1990s and early 2000s used FLEX 8000 devices for timing generators, custom counters, and proprietary bus interfaces. The EPF8820ATI144-2's industrial temperature grade and 5V supply tolerance suit lab and production-floor instruments that must coexist with TTL-level probes. JTAG support simplifies factory test, and the FastTrack interconnect gives predictable timing paths for metrology applications.
Được đề xuất
Aerospace and Defense Legacy Avionics
Many long-lifecycle aerospace and defense platforms built in the 1990s still contain FLEX 8000 FPGAs on 5V avionics buses, and obsolescence management requires qualified drop-in replacements. The EPF8820ATI144-2 industrial temperature grade and 1.7 ns tPD fit these applications, although new defense designs should consider radiation-tolerant FPGAs. Sustainment programs source the part through controlled aftermarket distributors with full traceability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8820ATI144-2 — 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 | EPF8820ATC144-2 | EPF8820ATI144-1 | EPF8820ATC144-3 | EPF8820ATC144-4 |
|---|---|---|---|---|---|
| Package | 144-pin PQFP (S-PQFP-G144) | 144-pin PQFP - same | 144-pin PQFP - same | 144-pin PQFP - same | 144-pin PQFP - same |
| Brand | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) |
| Family | FLEX 8000 | FLEX 8000 - same | FLEX 8000 - same | FLEX 8000 - same | FLEX 8000 - same |
| Logic Elements | 672 | 672 | 672 | 672 | 672 |
| User I/Os | 112 | 112 | 112 | 112 | 112 |
| Propagation Delay (tPD) | 1.7 ns | 1.7 ns | ~2.5 ns (slower) | ~1.4 ns (faster) | ~1.0 ns (fastest) |
| Supply Voltage | 4.5 V to 5.5 V (5 V nominal) | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to 70C) | Industrial | Commercial | Commercial |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- 5V VCCINT for legacy industrial systems (vsMAX II CPLD family)
- True FPGA fabric with 672 LEs and continuous routing (vsEPF8452A (256 LEs))
- Industrial temperature grade with 1.7 ns tPD (vsEPF8820ATC144-2 (commercial temperature))
Ghi chú thiết kế
Place a 0.1 uF ceramic decoupling capacitor at every VCCINT and VCCIO pin, plus a single 10-100 uF bulk tantalum or aluminum capacitor near the package. The EPF8820ATI144-2 draws significant transient current during configuration; bulk capacitance prevents VCC droop that could otherwise trigger an unintended reconfiguration. VCC must ramp monotonically from 0V to 5V in less than 100 ms per the FLEX 8000 handbook; an incomplete power-up sequence can leave the device in an undefined configuration state with output buffers enabled, causing bus contention with downstream logic.
Use a 4-layer PCB with dedicated power and ground planes; do not route long traces on VCC or GND. The 144-pin PQFP at 0.500 mm pitch is workable with standard 8-mil traces and 8-mil spaces; vias in the thermal pad under the PQFP body are not required because the package has no exposed die-attach pad. JTAG signals (TCK, TMS, TDI, TDO) should be routed with 4-mil control of impedance and kept short to avoid reflections at the configuration clock frequency.
Three pitfalls are common when bringing up an EPF8820ATI144-2 design: (1) forgetting that the SRAM configuration is volatile and not providing a configuration PROM (EPC1/EPC2) - the device will not boot from flash; (2) leaving nCONFIG floating instead of tying it high through a 10 kohm pull-up, which causes the device to enter configuration mode spuriously; (3) driving the I/O pins before configuration completes, causing bus contention - the outputs are high-impedance during configuration but can drive weakly if the MSEL pins are set incorrectly. Always check the nSTATUS pin for a high state before enabling downstream logic.
Place the EPC1 or EPC2 configuration PROM within 50 mm of the FLEX 8000 device and route DCLK with a controlled-impedance trace to avoid configuration errors. The dedicated INPUT pins (141-144) are optimized for high-speed clock or clear signals - use them for global clock or global clear routing rather than dedicating an I/O pin, which saves the LAB-level clock network for other functions. Decoupling capacitors must be placed within 5 mm of the corresponding VCC pin per Altera's design guidelines.
Thông tin tuân thủ
The Altera FLEX 8000 family pre-dates the RoHS directive. Distributor stock is generally non-RoHS (SnPb finish), although some aftermarket sources carry RoHS-compliant reballed parts. RoHS/REACH compliance must be verified at the lot level for any new procurement.
