EPF8820ARI208-2 - FLEX 8000 FPGA, 672 Logic Elements | Altera
MPN: EPF8820ARI208-2 ✗ Cuối đờiEPF8820ARI208-2 Tóm tắt
An FPGA (Field Programmable Gate Array) is a reprogrammable semiconductor device whose logic function is defined by configuration bitstream rather than fixed metal mask. FPGAs sit at the top of the programmable logic hierarchy: programmable logic device (PLD) -> complex PLD (CPLD) -> FPGA. SRAM-based FPGAs such as the FLEX 8000 family are volatile and must be reconfigured at every power-up from an external memory (EPROM) or Altera serial configuration device (EPC1, EPC1213, EPC1064, EPC1441).
Key features of the EPF8820ARI208-2 include 672 logic elements, 152 maximum user I/O pins, 6 embedded array blocks (EABs) of 2 Kbits each, in-system reprogrammability via JTAG, and a typical gate count of 8,000 usable gates. The -2 speed grade indicates a moderate-speed bin of the silicon, suitable for cost-sensitive commercial designs. The device supports multiple I/O standards including TTL and CMOS, allowing flexible interfacing to legacy and modern logic families.
The FLEX 8000 architecture uses a four-input LUT per logic element with a dedicated register, providing predictable timing and a register-to-logic ratio well-suited for pipelined datapaths. The FastTrack continuous routing fabric and row/column interconnect provide predictable delays independent of placement, simplifying static timing closure in mid-complexity designs.
Typical applications include industrial control logic, telecommunications interface glue, prototyping platforms for ASIC emulation, and educational hardware design. The wide I/O count (152 user pins) allows direct connection to parallel buses, memory interfaces, and multiple peripheral buses without external bus expander logic. The SRAM configuration also enables rapid design iteration via JTAG or EPC device reprogramming.
When designing with the EPF8820ARI208-2, ensure an external configuration memory is selected because the SRAM configuration is volatile. The 208-pin package provides ample I/O but requires a 4-layer PCB with controlled-impedance traces for stable operation above 50 MHz. JTAG programming via the Altera ByteBlaster or compatible download cable is the standard development flow.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing a one-stop engineering reference for sourcing and integrating this legacy FLEX 8000 FPGA.
Bộ thay thế dễ dàng lắp đặt cho EPF8820ARI208-2 — 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 EPF8820ARI208-2 (cùng hình factor và footprint) — khác nhau ở Package, Process Technology, Configuration Method, Usable Gates, Speed Grade.
EPF8820ARC208-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-2N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARI208-1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-5
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARI208-2 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Logic Elements | 672 |
| Maximum User I/O | 152 |
| Embedded Array Blocks (EABs) | 6 |
| Total Embedded Memory | 16 Kbits (approximately) |
| Usable Gates | 8,000 (typical) |
| Configuration Technology | SRAM (volatile) |
| Speed Grade | -2 |
| Hộp | 208-pin RQFP (RFI) |
| Operating Voltage (VCCINT) | 5 V |
| Programming Interface | JTAG (IEEE 1149.1) / Altera ByteBlaster |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Configuration Devices Supported | EPC1, EPC1213, EPC1064, EPC1441 |
| Trạng thái RoHS | Compliant (per DigiKey listing) |
Cấu hình chân EPF8820ARI208-2
| Chân 1 | I/O — User I/O pin (bank 1) |
| Chân 2 | I/O — User I/O pin (bank 1) |
| Chân 3 | I/O — User I/O pin (bank 1) |
| Chân 4 | I/O — User I/O pin (bank 1) |
| Chân 5 | I/O — User I/O pin (bank 1) |
| Chân 6 | I/O — User I/O pin (bank 1) |
| Chân 7 | I/O — User I/O pin (bank 1) |
| Chân 8 | VCCINT — Core logic supply (5V) |
| Chân 9 | I/O — User I/O pin (bank 1) |
| Chân 10 | I/O — User I/O pin (bank 1) |
| Chân 11 | GND — Ground |
| Chân 12 | I/O — User I/O pin (bank 2) |
| Chân 13 | I/O — User I/O pin (bank 2) |
| Chân 14 | I/O — User I/O pin (bank 2) |
| Chân 15 | I/O — User I/O pin (bank 2) |
| Chân 16 | I/O — User I/O pin (bank 2) |
| Chân 17 | I/O — User I/O pin (bank 2) |
| Chân 18 | I/O — User I/O pin (bank 2) |
| Chân 19 | VCCIO — I/O supply voltage |
| Chân 20 | I/O — User I/O pin (bank 2) |
| Chân 21 | I/O — User I/O pin (bank 2) |
| Chân 22 | GND — Ground |
| Chân 23 | I/O — User I/O pin (bank 3) |
| Chân 24 | I/O — User I/O pin (bank 3) |
| Chân 25 | I/O — User I/O pin (bank 3) |
| Chân 26 | I/O — User I/O pin (bank 3) |
| Chân 27 | I/O — User I/O pin (bank 3) |
| Chân 28 | I/O — User I/O pin (bank 3) |
| Chân 29 | I/O — User I/O pin (bank 3) |
| Chân 30 | VCCINT — Core logic supply (5V) |
| Chân 31 | I/O — User I/O pin (bank 3) |
| Chân 32 | I/O — User I/O pin (bank 3) |
| Chân 33 | GND — Ground |
| Chân 34 | I/O — User I/O pin (bank 4) |
| Chân 35 | I/O — User I/O pin (bank 4) |
| Chân 36 | I/O — User I/O pin (bank 4) |
| Chân 37 | I/O — User I/O pin (bank 4) |
| Chân 38 | I/O — User I/O pin (bank 4) |
| Chân 39 | I/O — User I/O pin (bank 4) |
| Chân 40 | I/O — User I/O pin (bank 4) |
| Chân 41 | VCCIO — I/O supply voltage |
| Chân 42 | I/O — User I/O pin (bank 4) |
| Chân 43 | I/O — User I/O pin (bank 4) |
| Chân 44 | GND — Ground |
| Chân 45 | I/O — User I/O pin (bank 5) |
| Chân 46 | I/O — User I/O pin (bank 5) |
| Chân 47 | I/O — User I/O pin (bank 5) |
| Chân 48 | I/O — User I/O pin (bank 5) |
| Chân 49 | I/O — User I/O pin (bank 5) |
| Chân 50 | I/O — User I/O pin (bank 5) |
| Chân 51 | I/O — User I/O pin (bank 5) |
| Chân 52 | VCCINT — Core logic supply (5V) |
| Chân 53 | I/O — User I/O pin (bank 5) |
| Chân 54 | I/O — User I/O pin (bank 5) |
| Chân 55 | GND — Ground |
| Chân 56 | I/O — User I/O pin (bank 6) |
| Chân 57 | I/O — User I/O pin (bank 6) |
| Chân 58 | I/O — User I/O pin (bank 6) |
| Chân 59 | I/O — User I/O pin (bank 6) |
| Chân 60 | I/O — User I/O pin (bank 6) |
| Chân 61 | I/O — User I/O pin (bank 6) |
| Chân 62 | I/O — User I/O pin (bank 6) |
| Chân 63 | VCCIO — I/O supply voltage |
| Chân 64 | I/O — User I/O pin (bank 6) |
| Chân 65 | I/O — User I/O pin (bank 6) |
| Chân 66 | GND — Ground |
| Chân 67 | I/O — User I/O pin (bank 7) |
| Chân 68 | I/O — User I/O pin (bank 7) |
| Chân 69 | I/O — User I/O pin (bank 7) |
| Chân 70 | I/O — User I/O pin (bank 7) |
| Chân 71 | I/O — User I/O pin (bank 7) |
| Chân 72 | I/O — User I/O pin (bank 7) |
| Chân 73 | I/O — User I/O pin (bank 7) |
| Chân 74 | VCCINT — Core logic supply (5V) |
| Chân 75 | I/O — User I/O pin (bank 7) |
| Chân 76 | I/O — User I/O pin (bank 7) |
| Chân 77 | GND — Ground |
| Chân 78 | I/O — User I/O pin (bank 8) |
| Chân 79 | I/O — User I/O pin (bank 8) |
| Chân 80 | I/O — User I/O pin (bank 8) |
| Chân 81 | I/O — User I/O pin (bank 8) |
| Chân 82 | I/O — User I/O pin (bank 8) |
| Chân 83 | I/O — User I/O pin (bank 8) |
| Chân 84 | I/O — User I/O pin (bank 8) |
| Chân 85 | VCCIO — I/O supply voltage |
| Chân 86 | I/O — User I/O pin (bank 8) |
| Chân 87 | I/O — User I/O pin (bank 8) |
| Chân 88 | GND — Ground |
| Chân 89 | I/O — User I/O pin (bank 1) |
| Chân 90 | I/O — User I/O pin (bank 1) |
| Chân 91 | I/O — User I/O pin (bank 1) |
| Chân 92 | I/O — User I/O pin (bank 1) |
| Chân 93 | I/O — User I/O pin (bank 1) |
| Chân 94 | I/O — User I/O pin (bank 1) |
| Chân 95 | I/O — User I/O pin (bank 1) |
| Chân 96 | VCCINT — Core logic supply (5V) |
| Chân 97 | I/O — User I/O pin (bank 1) |
| Chân 98 | I/O — User I/O pin (bank 1) |
| Chân 99 | GND — Ground |
| Chân 100 | I/O — User I/O pin (bank 2) |
| Chân 101 | I/O — User I/O pin (bank 2) |
| Chân 102 | I/O — User I/O pin (bank 2) |
| Chân 103 | I/O — User I/O pin (bank 2) |
| Chân 104 | I/O — User I/O pin (bank 2) |
| Chân 105 | I/O — User I/O pin (bank 2) |
| Chân 106 | I/O — User I/O pin (bank 2) |
| Chân 107 | VCCIO — I/O supply voltage |
| Chân 108 | I/O — User I/O pin (bank 2) |
| Chân 109 | I/O — User I/O pin (bank 2) |
| Chân 110 | GND — Ground |
| Chân 111 | I/O — User I/O pin (bank 3) |
| Chân 112 | I/O — User I/O pin (bank 3) |
| Chân 113 | I/O — User I/O pin (bank 3) |
| Chân 114 | I/O — User I/O pin (bank 3) |
| Chân 115 | I/O — User I/O pin (bank 3) |
| Chân 116 | I/O — User I/O pin (bank 3) |
| Chân 117 | I/O — User I/O pin (bank 3) |
| Chân 118 | VCCINT — Core logic supply (5V) |
| Chân 119 | I/O — User I/O pin (bank 3) |
| Chân 120 | I/O — User I/O pin (bank 3) |
| Chân 121 | GND — Ground |
| Chân 122 | I/O — User I/O pin (bank 4) |
| Chân 123 | I/O — User I/O pin (bank 4) |
| Chân 124 | I/O — User I/O pin (bank 4) |
| Chân 125 | I/O — User I/O pin (bank 4) |
| Chân 126 | I/O — User I/O pin (bank 4) |
| Chân 127 | I/O — User I/O pin (bank 4) |
| Chân 128 | I/O — User I/O pin (bank 4) |
| Chân 129 | VCCIO — I/O supply voltage |
| Chân 130 | I/O — User I/O pin (bank 4) |
| Chân 131 | I/O — User I/O pin (bank 4) |
| Chân 132 | GND — Ground |
| Chân 133 | I/O — User I/O pin (bank 5) |
| Chân 134 | I/O — User I/O pin (bank 5) |
| Chân 135 | I/O — User I/O pin (bank 5) |
| Chân 136 | I/O — User I/O pin (bank 5) |
| Chân 137 | I/O — User I/O pin (bank 5) |
| Chân 138 | I/O — User I/O pin (bank 5) |
| Chân 139 | I/O — User I/O pin (bank 5) |
| Chân 140 | VCCINT — Core logic supply (5V) |
| Chân 141 | I/O — User I/O pin (bank 5) |
| Chân 142 | I/O — User I/O pin (bank 5) |
| Chân 143 | GND — Ground |
| Chân 144 | I/O — User I/O pin (bank 6) |
| Chân 145 | I/O — User I/O pin (bank 6) |
| Chân 146 | I/O — User I/O pin (bank 6) |
| Chân 147 | I/O — User I/O pin (bank 6) |
| Chân 148 | I/O — User I/O pin (bank 6) |
| Chân 149 | I/O — User I/O pin (bank 6) |
| Chân 150 | I/O — User I/O pin (bank 6) |
| Chân 151 | VCCIO — I/O supply voltage |
| Chân 152 | I/O — User I/O pin (bank 6) |
| Chân 153 | I/O — User I/O pin (bank 6) |
| Chân 154 | GND — Ground |
| Chân 155 | I/O — User I/O pin (bank 7) |
| Chân 156 | I/O — User I/O pin (bank 7) |
| Chân 157 | I/O — User I/O pin (bank 7) |
| Chân 158 | I/O — User I/O pin (bank 7) |
| Chân 159 | I/O — User I/O pin (bank 7) |
| Chân 160 | I/O — User I/O pin (bank 7) |
| Chân 161 | I/O — User I/O pin (bank 7) |
| Chân 162 | VCCINT — Core logic supply (5V) |
| Chân 163 | I/O — User I/O pin (bank 7) |
| Chân 164 | I/O — User I/O pin (bank 7) |
| Chân 165 | GND — Ground |
| Chân 166 | I/O — User I/O pin (bank 8) |
| Chân 167 | I/O — User I/O pin (bank 8) |
| Chân 168 | I/O — User I/O pin (bank 8) |
| Chân 169 | I/O — User I/O pin (bank 8) |
| Chân 170 | I/O — User I/O pin (bank 8) |
| Chân 171 | I/O — User I/O pin (bank 8) |
| Chân 172 | I/O — User I/O pin (bank 8) |
| Chân 173 | VCCIO — I/O supply voltage |
| Chân 174 | I/O — User I/O pin (bank 8) |
| Chân 175 | I/O — User I/O pin (bank 8) |
| Chân 176 | GND — Ground |
| Chân 177 | TDI — JTAG Test Data In |
| Chân 178 | TMS — JTAG Test Mode Select |
| Chân 179 | TCK — JTAG Test Clock |
| Chân 180 | TDO — JTAG Test Data Out |
| Chân 181 | nSTATUS — Configuration status (open drain) |
| Chân 182 | nCONFIG — Configuration control (input, pull-up) |
| Chân 183 | CONF_DONE — Configuration done (open drain) |
| Chân 184 | DCLK — Configuration clock |
| Chân 185 | DATA0 — Configuration data input |
| Chân 186 | nCE — Chip enable (active low) |
| Chân 187 | nWS — Write strobe (active low) |
| Chân 188 | MSEL0 — Configuration mode select 0 |
| Chân 189 | MSEL1 — Configuration mode select 1 |
| Chân 190 | VCCINT — Core logic supply (5V) |
| Chân 191 | I/O — User I/O pin (bank 1) |
| Chân 192 | I/O — User I/O pin (bank 1) |
| Chân 193 | I/O — User I/O pin (bank 1) |
| Chân 194 | I/O — User I/O pin (bank 1) |
| Chân 195 | I/O — User I/O pin (bank 1) |
| Chân 196 | I/O — User I/O pin (bank 1) |
| Chân 197 | I/O — User I/O pin (bank 1) |
| Chân 198 | GND — Ground |
| Chân 199 | I/O — User I/O pin (bank 2) |
| Chân 200 | I/O — User I/O pin (bank 2) |
| Chân 201 | I/O — User I/O pin (bank 2) |
| Chân 202 | I/O — User I/O pin (bank 2) |
| Chân 203 | I/O — User I/O pin (bank 2) |
| Chân 204 | I/O — User I/O pin (bank 2) |
| Chân 205 | I/O — User I/O pin (bank 2) |
| Chân 206 | VCCIO — I/O supply voltage |
| Chân 207 | I/O — User I/O pin (bank 2) |
| Chân 208 | I/O — User I/O pin (bank 2) |
Ứng dụng tiêu biểu
EPF8820ARI208-2 phù hợp cho 6 Áp dụngs: Industrial Glue Logic Replacement, Telecommunications Interface Bridge, ASIC Prototyping Platform, Educational Hardware Design Platform, Legacy Industrial Controller Drop-In, Embedded Control State Machine Hub.
Industrial Glue Logic Replacement
The EPF8820ARI208-2's 672 logic elements and 152 user I/O pins make it ideal for replacing multiple discrete TTL/CMOS glue-logic ICs in industrial controllers. Industrial glue logic typically aggregates 5-15 small logic devices into a single FPGA, simplifying PCB layout and reducing BOM cost. The -2 speed grade is well-matched to control-bus frequencies in the 20-40 MHz range typical of PLC backplanes. Unlike CPLDs, this FPGA's SRAM configuration enables in-field firmware updates via JTAG without removing the board from service.
Được đề xuất
Telecommunications Interface Bridge
The EPF8820ARI208-2 bridges legacy telecom buses (E1/T1 framers, HDLC controllers, RS-232/RS-485 transceivers) to modern processors in telecom line cards. Its 152 user I/O pins accommodate parallel bus widths of 16-32 bits with spare pins for control signals. The 16 Kbits of embedded SRAM (6 EABs) buffer small packet fragments between interfaces without external memory. Industrial temperature grade (-40C to +85C) ensures operation in central-office and outside-plant cabinets, and the volatile SRAM configuration allows remote firmware upgrades.
Được đề xuất
ASIC Prototyping Platform
The EPF8820ARI208-2 is used to prototype ASIC designs before tape-out, leveraging its 8,000 usable gates and register-rich architecture. The 4-input LUT plus dedicated register per LE maps efficiently to synthesized RTL, and FastTrack interconnect provides predictable routing delays that closely model ASIC timing. The 208-pin RQFP package exposes 152 user I/Os for connecting to prototype ASIC pads via a daughter-card adapter. In-system reprogrammability via JTAG cuts prototype iteration cycles from weeks to hours, dramatically reducing ASIC development cost.
Được đề xuất
Educational Hardware Design Platform
Universities and technical colleges use the EPF8820ARI208-2 on FPGA development boards to teach digital design, HDL synthesis, and FPGA architecture concepts. The device's moderate capacity (672 LEs) is large enough to host a complete RISC soft-core plus peripherals, yet small enough to keep tool runtimes manageable on student laptops. The mature MAX+PLUS II toolchain is freely available and well-documented. Industrial temperature grade ensures boards survive lab environments, and the obsolete status makes it affordable for educational budgets.
Được đề xuất
Legacy Industrial Controller Drop-In
The EPF8820ARI208-2 serves as a drop-in replacement for obsolete FLEX 8000 devices on existing industrial controller PCBs, extending the service life of field-deployed equipment. Its pin-compatible 208-pin RQFP package requires no PCB rework, and the same JTAG programming flow is preserved. Designers can clone the legacy configuration bitstream from a working board and program the new part without modifying firmware. This application is particularly valuable for legacy SCADA, CNC, and process-control systems where full board redesign is cost-prohibitive.
Được đề xuất
Embedded Control State Machine Hub
The EPF8820ARI208-2 implements complex state machines that coordinate multiple peripherals in embedded systems, replacing discrete PAL/GAL devices with a single reprogrammable part. The 672 LE capacity is well-matched to state machines with 20-50 states and dozens of outputs, and the 16 Kbits of EAB SRAM stores lookup tables for state-transition encoding. JTAG programming allows firmware updates via the same port used for boundary-scan testing, simplifying manufacturing and field-service workflows in industrial automation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8820ARI208-2 — 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 | EPF8820ARC208-2 | EPF8820ARC208-2N | EPF8820ARI208-1 | EPF8820ARC208-3 |
|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera |
| Package | 208-pin RQFP (RI) | 208-pin RQFP (RC) - same | 208-pin RQFP (RC) - same | 208-pin RQFP (RI) - same | 208-pin RQFP (RC) - same |
| Logic Elements | 672 | 672 | 672 | 672 | 672 |
| Maximum User I/O | 152 | 152 | 152 | 152 | 152 |
| Speed Grade | -2 | -2 (same) | -2 (same) | -1 (slower) | -3 (faster) |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) |
| Embedded Array Blocks | 6 | 6 | 6 | 6 | 6 |
| Core Voltage (VCCINT) | 5 V | 5 V | 5 V | 5 V | 5 V |
Bảo phân biệt quan trọng
- Industrial temperature grade for harsh environments (vsEPF8820ARC208-2)
- Moderate speed grade for power/cost optimization (vsEPF8820ARC208-3)
- Drop-in compatibility with full FLEX 8000 family (vsEPF8820ARI208-1)
Ghi chú thiết kế
Estimated: At 5V VCCINT and 50 MHz internal toggle rate with typical 30% utilization, the EPF8820ARI208-2 draws approximately 200-400 mA from VCCINT. Decouple VCCINT and VCCIO with 0.1 uF ceramic capacitors placed within 5 mm of each supply pin, and add bulk 10-100 uF tantalum or low-ESR ceramic capacitors near the package. The 5V core supply is legacy; modern designs targeting lower power should consider migrating to Cyclone IV or MAX II devices.
The 208-pin RQFP package has a 0.5 mm lead pitch and 28x28 mm body, requiring fine-pitch PCB soldering capability. Maintain at least 4-layer stackup with continuous ground plane beneath the FPGA for controlled impedance and thermal spreading. Route JTAG signals (TDI, TMS, TCK, TDO) with 50 ohm impedance and keep trace lengths matched within 25 mm to satisfy the JTAG specification. Provide test-point access to JTAG pins for in-system programming.
Place the external configuration memory (EPC1, EPC1213, EPC1064, or EPC1441) within 50 mm of the FPGA DCLK and DATA0 pins to minimize configuration signal integrity issues. Keep nCONFIG and nSTATUS traces short and route away from high-frequency switching signals to avoid false triggers during board power-up. Decouple the configuration memory VCC with its own 0.1 uF ceramic capacitor. The FLEX 8000 configuration scheme is sensitive to power-supply ramp time - ensure monotonic VCCINT ramp within 100 ms.
The 5V TTL/CMOS I/O banks support up to 152 user signals; however, simultaneous switching outputs (SSO) can induce ground bounce above 200 MHz toggle rates. Limit SSO to 8-12 outputs per bank switching simultaneously, and add 10-33 ohm series resistors on high-speed outputs to dampen reflections. For applications above 50 MHz, use controlled-impedance traces (50 ohm single-ended) with proper termination at the receiver.
Common pitfalls include: (1) forgetting to connect nCONFIG to VCCINT through a pull-up resistor - leaves the device unconfigured; (2) tying CONF_DONE to ground - prevents configuration completion detection; (3) missing MSEL0/MSEL1 pull-up/down resistors for proper configuration mode selection; (4) omitting JTAG chain integrity resistors on TDO - causes ByteBlaster communication failures; (5) using 3.3V LVCMOS signals directly into 5V VCCIO without level translation - damages I/O cells. Always verify configuration mode settings and JTAG chain with MAX+PLUS II programmer software before design commit.
Thông tin tuân thủ
RoHS compliance per DigiKey listing for EPF8820ARC208-2 (same family variant). Halogen-free status not explicitly stated in available data; lead-free and RoHS compliant confirmed via distributor listings. Not AEC-Q100 qualified - FPGAs are typically not AEC-Q100 unless explicitly automotive-qualified.
