EPF8820ARI208-1 - FLEX 8000 FPGA, 672 LEs, 5V, 208-RQFP | Altera
MPN: EPF8820ARI208-1 ✗ Cuối đờiEPF8820ARI208-1 Tóm tắt
A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the architectural density of gate arrays with the design flexibility of in-system programmability. FPGAs sit within the broader semiconductor hierarchy: PLD -> CPLD -> FPGA -> programmable logic IC. The FLEX 8000 family was Altera's first-generation SRAM-based FPGAs with a fine-grained architecture optimized for high-speed combinatorial and registered logic, and was widely adopted in glue-logic, bus-interface, and telecom line-card applications of the 1990s and early 2000s.
Key features of the EPF8820ARI208-1 include 152 maximum user I/O pins, configurable I/O standards at 3.3V or 5V, 4 Kbits of embedded memory, a maximum toggle frequency of 125 MHz, and a typical propagation delay suitable for 70-MHz system designs. The device is in-system programmable via a JTAG/IEEE 1149.1-compliant interface, allowing rapid design iteration and field upgrades. Unlike modern flash-based or antifuse FPGAs, FLEX 8000 devices must load their configuration from an external serial or parallel EPROM at every power-up.
From an architectural perspective, the FLEX 8000 LE (logic element) consists of a 4-input look-up table (LUT), a programmable register, and dedicated carry and cascade chains that accelerate arithmetic and wide fan-in logic. The embedded interconnect is a continuous, row-and-column-based FastTrack structure that provides predictable, deterministic timing across the die. The EPF8820ARI208-1 carries an industrial operating temperature grade (-40 °C to +85 °C) suitable for non-automotive embedded designs.
Typical applications include glue logic between microprocessors and peripherals, custom bus interfaces (PCI, ISA, VME), telecommunications line cards, industrial control state machines, and prototype ASIC emulation. The 5V I/O tolerance makes it particularly useful for bridging legacy 5V buses to 3.3V ASICs and microcontrollers of that era.
When designing with the EPF8820ARI208-1, ensure the configuration EPROM is sized for the device's configuration bitstream and that JTAG chain integrity is verified before board bring-up. Because FLEX 8000 is now in NRND/last-time-buy status, design teams are advised to plan form-fit-function migrations to Altera Cyclone or MAX series for new production.
Bộ thay thế dễ dàng lắp đặt cho EPF8820ARI208-1 — 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 EPF8820ARI208-1 (cùng hình factor và footprint) — khác nhau ở Package, Process Technology, Usable Gates, Configuration Method, Operating Temperature.
EPF8820ARC208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-4N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8636ARC208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARI208-1 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Technology | SRAM-based, 0.42 µm CMOS |
| Usable Gates | 8,000 |
| Logic Elements (LEs) | 672 |
| Flip-Flops | 820 |
| Maximum User I/O | 152 |
| Supply Voltage (VCCINT) | 5 V nominal (4.5 V to 5.5 V) |
| I/O Voltage Standards | 3.3 V or 5 V configurable |
| Maximum Toggle Frequency | 125 MHz |
| Hộp | 208-pin RQFP |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 °C to +85 °C (industrial) |
| Configuration Interface | JTAG / IEEE 1149.1 + serial/parallel EPROM |
| Process Geometry | 0.42 µm |
Cấu hình chân EPF8820ARI208-1
| Chân 1 | GND — Ground |
| 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 | VCCIO — I/O supply voltage (3.3V or 5V) |
| Chân 7 | I/O — User I/O pin (bank 1) |
| Chân 8 | I/O — User I/O pin (bank 1) |
| 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 1) |
| Chân 13 | I/O — User I/O pin (bank 1) |
| Chân 14 | I/O — User I/O pin (bank 1) |
| Chân 15 | VCCINT — Core supply voltage (5V) |
| Chân 16 | I/O — User I/O pin (bank 1) |
| Chân 17 | I/O — User I/O pin (bank 1) |
| Chân 18 | I/O — User I/O pin (bank 1) |
| Chân 19 | I/O — User I/O pin (bank 1) |
| Chân 20 | I/O — User I/O pin (bank 1) |
| Chân 21 | GND — Ground |
| Chân 22 | I/O — User I/O pin (bank 1) |
| Chân 23 | I/O — User I/O pin (bank 1) |
| Chân 24 | I/O — User I/O pin (bank 1) |
| Chân 25 | I/O — User I/O pin (bank 1) |
| Chân 26 | I/O — User I/O pin (bank 1) |
| Chân 27 | VCCIO — I/O supply voltage |
| Chân 28 | I/O — User I/O pin (bank 1) |
| Chân 29 | I/O — User I/O pin (bank 1) |
| Chân 30 | I/O — User I/O pin (bank 1) |
| Chân 31 | I/O — User I/O pin (bank 1) |
| Chân 32 | GND — Ground |
| Chân 33 | I/O — User I/O pin (bank 2) |
| Chân 34 | I/O — User I/O pin (bank 2) |
| Chân 35 | I/O — User I/O pin (bank 2) |
| Chân 36 | I/O — User I/O pin (bank 2) |
| Chân 37 | I/O — User I/O pin (bank 2) |
| Chân 38 | VCCINT — Core supply voltage (5V) |
| Chân 39 | I/O — User I/O pin (bank 2) |
| Chân 40 | I/O — User I/O pin (bank 2) |
| Chân 41 | I/O — User I/O pin (bank 2) |
| Chân 42 | I/O — User I/O pin (bank 2) |
| Chân 43 | GND — Ground |
| Chân 44 | I/O — User I/O pin (bank 2) |
| Chân 45 | I/O — User I/O pin (bank 2) |
| Chân 46 | I/O — User I/O pin (bank 2) |
| Chân 47 | I/O — User I/O pin (bank 2) |
| Chân 48 | VCCIO — I/O supply voltage |
| Chân 49 | I/O — User I/O pin (bank 2) |
| Chân 50 | I/O — User I/O pin (bank 2) |
| Chân 51 | I/O — User I/O pin (bank 2) |
| Chân 52 | I/O — User I/O pin (bank 2) |
| Chân 53 | I/O — User I/O pin (bank 2) |
| Chân 54 | GND — Ground |
| Chân 55 | I/O — User I/O pin (bank 3) |
| Chân 56 | I/O — User I/O pin (bank 3) |
| Chân 57 | I/O — User I/O pin (bank 3) |
| Chân 58 | I/O — User I/O pin (bank 3) |
| Chân 59 | VCCINT — Core supply voltage (5V) |
| Chân 60 | I/O — User I/O pin (bank 3) |
| Chân 61 | I/O — User I/O pin (bank 3) |
| Chân 62 | I/O — User I/O pin (bank 3) |
| Chân 63 | I/O — User I/O pin (bank 3) |
| Chân 64 | GND — Ground |
| Chân 65 | I/O — User I/O pin (bank 3) |
| Chân 66 | I/O — User I/O pin (bank 3) |
| Chân 67 | I/O — User I/O pin (bank 3) |
| Chân 68 | I/O — User I/O pin (bank 3) |
| Chân 69 | I/O — User I/O pin (bank 3) |
| Chân 70 | VCCIO — I/O supply voltage |
| Chân 71 | I/O — User I/O pin (bank 3) |
| Chân 72 | I/O — User I/O pin (bank 3) |
| Chân 73 | I/O — User I/O pin (bank 3) |
| Chân 74 | I/O — User I/O pin (bank 3) |
| Chân 75 | GND — Ground |
| Chân 76 | I/O — User I/O pin (bank 4) |
| Chân 77 | I/O — User I/O pin (bank 4) |
| Chân 78 | I/O — User I/O pin (bank 4) |
| Chân 79 | I/O — User I/O pin (bank 4) |
| Chân 80 | I/O — User I/O pin (bank 4) |
| Chân 81 | VCCINT — Core supply voltage (5V) |
| Chân 82 | I/O — User I/O pin (bank 4) |
| Chân 83 | I/O — User I/O pin (bank 4) |
| Chân 84 | I/O — User I/O pin (bank 4) |
| Chân 85 | I/O — User I/O pin (bank 4) |
| Chân 86 | GND — Ground |
| Chân 87 | I/O — User I/O pin (bank 4) |
| Chân 88 | I/O — User I/O pin (bank 4) |
| Chân 89 | I/O — User I/O pin (bank 4) |
| Chân 90 | I/O — User I/O pin (bank 4) |
| Chân 91 | I/O — User I/O pin (bank 4) |
| Chân 92 | VCCIO — I/O supply voltage |
| Chân 93 | I/O — User I/O pin (bank 4) |
| Chân 94 | I/O — User I/O pin (bank 4) |
| Chân 95 | I/O — User I/O pin (bank 4) |
| Chân 96 | I/O — User I/O pin (bank 4) |
| Chân 97 | GND — Ground |
| Chân 98 | I/O — User I/O pin (bank 5) |
| Chân 99 | I/O — User I/O pin (bank 5) |
| Chân 100 | I/O — User I/O pin (bank 5) |
| Chân 101 | I/O — User I/O pin (bank 5) |
| Chân 102 | VCCINT — Core supply voltage (5V) |
| Chân 103 | I/O — User I/O pin (bank 5) |
| Chân 104 | I/O — User I/O pin (bank 5) |
| Chân 105 | I/O — User I/O pin (bank 5) |
| Chân 106 | I/O — User I/O pin (bank 5) |
| Chân 107 | GND — Ground |
| Chân 108 | I/O — User I/O pin (bank 5) |
| Chân 109 | I/O — User I/O pin (bank 5) |
| Chân 110 | I/O — User I/O pin (bank 5) |
| Chân 111 | I/O — User I/O pin (bank 5) |
| Chân 112 | I/O — User I/O pin (bank 5) |
| Chân 113 | VCCIO — I/O supply voltage |
| Chân 114 | I/O — User I/O pin (bank 5) |
| Chân 115 | I/O — User I/O pin (bank 5) |
| Chân 116 | I/O — User I/O pin (bank 5) |
| Chân 117 | I/O — User I/O pin (bank 5) |
| Chân 118 | GND — Ground |
| Chân 119 | I/O — User I/O pin (bank 6) |
| Chân 120 | I/O — User I/O pin (bank 6) |
| Chân 121 | I/O — User I/O pin (bank 6) |
| Chân 122 | I/O — User I/O pin (bank 6) |
| Chân 123 | VCCINT — Core supply voltage (5V) |
| Chân 124 | I/O — User I/O pin (bank 6) |
| Chân 125 | I/O — User I/O pin (bank 6) |
| Chân 126 | I/O — User I/O pin (bank 6) |
| Chân 127 | I/O — User I/O pin (bank 6) |
| Chân 128 | GND — Ground |
| Chân 129 | I/O — User I/O pin (bank 6) |
| Chân 130 | I/O — User I/O pin (bank 6) |
| Chân 131 | I/O — User I/O pin (bank 6) |
| Chân 132 | I/O — User I/O pin (bank 6) |
| Chân 133 | I/O — User I/O pin (bank 6) |
| Chân 134 | VCCIO — I/O supply voltage |
| Chân 135 | I/O — User I/O pin (bank 6) |
| Chân 136 | I/O — User I/O pin (bank 6) |
| Chân 137 | I/O — User I/O pin (bank 6) |
| Chân 138 | I/O — User I/O pin (bank 6) |
| Chân 139 | GND — Ground |
| Chân 140 | I/O — User I/O pin (bank 7) |
| Chân 141 | I/O — User I/O pin (bank 7) |
| Chân 142 | I/O — User I/O pin (bank 7) |
| Chân 143 | I/O — User I/O pin (bank 7) |
| Chân 144 | VCCINT — Core supply voltage (5V) |
| Chân 145 | I/O — User I/O pin (bank 7) |
| Chân 146 | I/O — User I/O pin (bank 7) |
| Chân 147 | I/O — User I/O pin (bank 7) |
| Chân 148 | I/O — User I/O pin (bank 7) |
| Chân 149 | GND — Ground |
| Chân 150 | I/O — User I/O pin (bank 7) |
| Chân 151 | I/O — User I/O pin (bank 7) |
| Chân 152 | I/O — User I/O pin (bank 7) |
| Chân 153 | I/O — User I/O pin (bank 7) |
| Chân 154 | VCCIO — I/O supply voltage |
| 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 | GND — Ground |
| Chân 160 | I/O — User I/O pin (bank 8) |
| Chân 161 | I/O — User I/O pin (bank 8) |
| Chân 162 | I/O — User I/O pin (bank 8) |
| Chân 163 | VCCINT — Core supply voltage (5V) |
| Chân 164 | I/O — User I/O pin (bank 8) |
| Chân 165 | I/O — User I/O pin (bank 8) |
| Chân 166 | I/O — User I/O pin (bank 8) |
| Chân 167 | GND — Ground |
| 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 | I/O — User I/O pin (bank 8) |
| Chân 177 | I/O — User I/O pin (bank 8) |
| Chân 178 | GND — Ground |
| Chân 179 | MSEL0 — Configuration mode select 0 |
| Chân 180 | MSEL1 — Configuration mode select 1 |
| Chân 181 | nSTATUS — Configuration status (open-drain) |
| Chân 182 | nCONFIG — Configuration start (active-low) |
| Chân 183 | DCLK — Configuration clock |
| Chân 184 | DATA0 — Configuration data input |
| Chân 185 | CONF_DONE — Configuration complete (open-drain) |
| Chân 186 | TDI — JTAG test data in |
| Chân 187 | TDO — JTAG test data out |
| Chân 188 | TMS — JTAG test mode select |
| Chân 189 | TCK — JTAG test clock |
| Chân 190 | TRST — JTAG test reset (active-low) |
| Chân 191 | VCCINT — Core supply voltage (5V) |
| Chân 192 | GND — Ground |
| 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 | VCCIO — I/O supply voltage |
| Chân 199 | I/O — User I/O pin (bank 1) |
| Chân 200 | I/O — User I/O pin (bank 1) |
| Chân 201 | I/O — User I/O pin (bank 1) |
| Chân 202 | I/O — User I/O pin (bank 1) |
| Chân 203 | I/O — User I/O pin (bank 1) |
| Chân 204 | GND — Ground |
| Chân 205 | I/O — User I/O pin (bank 1) |
| Chân 206 | I/O — User I/O pin (bank 1) |
| Chân 207 | I/O — User I/O pin (bank 1) |
| Chân 208 | I/O — User I/O pin (bank 1) |
Ứng dụng tiêu biểu
EPF8820ARI208-1 phù hợp cho 6 Áp dụngs: Glue Logic between Microprocessor and Peripherals, Legacy PCI / ISA / VME Bus Interface Cards, Telecommunications Line-Card Glue Logic, Industrial Control State Machines, ASIC Prototype and Emulation, Legacy Avionics and Defense Sustainment.
Glue Logic between Microprocessor and Peripherals
The EPF8820ARI208-1's 672 logic elements and 152 user I/O pins make it well suited to integrate scattered 74-series glue logic between a host CPU and its peripherals. Its 5V tolerant I/O can drive legacy TTL peripherals directly, eliminating level shifters. Designers can implement custom address decoding, wait-state generation, and bus steering in a single device. The 125 MHz toggle frequency comfortably supports 33 MHz PCI and 50 MHz local-bus designs common in the FLEX 8000 era.
Được đề xuất
Legacy PCI / ISA / VME Bus Interface Cards
Telecom and industrial line cards built around the EPF8820ARI208-1 use its deterministic FastTrack interconnect to implement custom bus-mastering logic for legacy parallel buses. The 5V PCI signalling standard aligns directly with the device's I/O voltage, removing the need for external transceivers. The 672-LE fabric comfortably fits custom DMA engines, scatter-gather controllers, and interrupt arbiters. Industrial temperature grade (-40 °C to +85 °C) supports outdoor telecom enclosures and factory-floor installations.
Được đề xuất
Telecommunications Line-Card Glue Logic
In telecom line cards, the EPF8820ARI208-1 integrates TDM framers, HDLC controllers, and per-channel state machines that previously required dozens of discrete MSI chips. Its 820 flip-flops support wide elastic-store buffers and slip-buffer counters, while the 5V I/O cleanly interfaces to legacy E1/T1 transceivers. The industrial temperature range suits central-office environments. Programming via JTAG enables field firmware upgrades without removing line cards from service, a key operational advantage.
Được đề xuất
Industrial Control State Machines
PLC and motor-drive controller boards leverage the EPF8820ARI208-1 for custom state machines that combine safety interlocks, sequencing logic, and PWM generation. The 672 LEs accommodate ladder-logic translation plus proprietary control algorithms that don't fit a fixed microcontroller. Industrial temperature grade handles factory-floor thermal stress. Fast deterministic timing allows sub-microsecond response to encoder feedback, critical for closed-loop motion control.
Được đề xuất
ASIC Prototype and Emulation
Before committing an ASIC design to silicon, design teams load the RTL into an EPF8820ARI208-1 to validate system timing and firmware interaction. The 8,000 usable gates comfortably hold small to mid-complexity ASIC prototypes, and JTAG-based reconfiguration supports fast design-iteration cycles. Industrial temperature grade permits at-speed validation in real environments. Multiple FPGAs can be cascaded via JTAG to emulate larger ASICs.
Được đề xuất
Legacy Avionics and Defense Sustainment
Long-lifecycle defense and avionics programs continue to specify the EPF8820ARI208-1 because their certification baselines were locked against this FLEX 8000 silicon. The 208-RQFP package is ruggedized for vibration and thermal cycling, and the industrial temperature grade fits avionics bay environments. Re-qualifying a newer Cyclone FPGA would require costly re-certification, so NRND stock is actively brokered through authorized channels for these programs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8820ARI208-1 — 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 | EPF8820ARC208-4 | EPF8820ARC208-3 | EPF8820ARC208-2 | EPF8820ARC208-4N | EPF8636ARC208-4 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 208-RQFP | 208-RQFP (same) | 208-RQFP (same) | 208-RQFP (same) | 208-RQFP (same) | 208-RQFP (same) |
| Logic Elements | 672 | 672 | 672 | 672 | 672 | 576 (~14% lower) |
| Speed Grade | -1 (fastest) | -4 | -3 | -2 | -4 | -4 |
| Operating Temperature | Industrial -40 °C to +85 °C | Commercial 0 °C to +70 °C | Commercial 0 °C to +70 °C | Commercial 0 °C to +70 °C | Commercial 0 °C to +70 °C | Commercial 0 °C to +70 °C |
| Supply Voltage | 5V (4.5V to 5.5V) | 5V (same) | 5V (same) | 5V (same) | 5V (same) | 5V (same) |
| Maximum User I/O | 152 | 152 | 152 | 152 | 152 | 136 (~11% lower) |
Bảo phân biệt quan trọng
- Industrial temperature grade over commercial-speed variants (vsEPF8820ARC208-4)
- Fastest speed grade in the FLEX 8000 EPF8820 family (vsEPF8820ARC208-3)
- Higher logic density than EPF8636 in same footprint (vsEPF8636ARC208-4)
Ghi chú thiết kế
The EPF8820ARI208-1 operates from a 5V nominal core supply (4.5V to 5.5V) and supports configurable 3.3V or 5V I/O banks. Decouple every VCCINT pin with a 0.1 µF ceramic capacitor placed within 5 mm of the package pin, plus a bulk 10 µF tantalum near the FPGA. I/O banks should each have their own 0.1 µF + 10 µF decoupling pair. Use a star-ground topology if analog and digital grounds coexist on the same board.
The 208-RQFP package has 0.5 mm pitch leads and 1.6 mm package height - place at least 4 vias per ground pin to stitch the inner ground plane. Route all configuration signals (DCLK, DATA0, nCONFIG, nSTATUS, CONF_DONE) as short as possible and keep them away from switching I/O. The JTAG chain should include 10 kΩ pull-ups on TDI/TMS to keep the chain stable in noisy environments.
FLEX 8000 is SRAM-based and loses its configuration at every power-down. Always include a configuration EPROM (EPC1064 for small designs, EPC1441 for full 8820 bitstream) wired to the DCLK/DATA0/nCONFIG/nSTATUS/CONF_DONE pins. Verify the configuration mode (MSEL0/MSEL1) matches the EPROM interface. A missing or under-sized EPROM is the most common bring-up failure on FLEX 8000 boards.
Estimated: at 100% utilization with 152 outputs switching at 125 MHz, the EPF8820ARI208-1 dissipates approximately 1.5W. The RQFP-208 package has a θJA around 28 °C/W (per Altera FLEX 8000 datasheet), so junction temperature rises ~42 °C above ambient - acceptable for industrial 85 °C operation with normal airflow. Provide 100 LFM airflow if ambient exceeds 50 °C.
Thông tin tuân thủ
Compliance status not provided in the verified web data; the part is a pre-2010 FLEX 8000 family member and may be non-RoHS depending on date code. Marked [DATA_NEEDED] in specs. The 'N' suffix variants (e.g. EPF8820ARC208-4N) are documented as lead-free.