EPF8820ARI208-1 - FLEX 8000 FPGA, 672 LEs, 5V, 208-RQFP | Altera
MPN： EPF8820ARI208-1 ✗ 停產EPF8820ARI208-1 概覽
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.
直接替換替代品，適用於 EPF8820ARI208-1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EPF8820ARI208-1 （相同外形與佔位） — 差異在於 Package, Process Technology, Usable Gates, Configuration Method, Operating Temperature.
EPF8820ARC208-4
✅ 直接替換聯絡詢價
查看資料表 →EPF8820ARC208-3
✅ 直接替換聯絡詢價
查看資料表 →EPF8820ARC208-2
✅ 直接替換聯絡詢價
查看資料表 →EPF8820ARC208-4N
✅ 直接替換聯絡詢價
查看資料表 →EPF8636ARC208-4
✅ 直接替換聯絡詢價
查看資料表 →EPF8820ARI208-1 最大額定值與電氣特性
| 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 |
| 封裝 | 208-pin RQFP |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 °C to +85 °C (industrial) |
| Configuration Interface | JTAG / IEEE 1149.1 + serial/parallel EPROM |
| Process Geometry | 0.42 µm |
EPF8820ARI208-1 腳位配置
| 腳位 1 | GND — Ground |
| 腳位 2 | I/O — User I/O pin (bank 1) |
| 腳位 3 | I/O — User I/O pin (bank 1) |
| 腳位 4 | I/O — User I/O pin (bank 1) |
| 腳位 5 | I/O — User I/O pin (bank 1) |
| 腳位 6 | VCCIO — I/O supply voltage (3.3V or 5V) |
| 腳位 7 | I/O — User I/O pin (bank 1) |
| 腳位 8 | I/O — User I/O pin (bank 1) |
| 腳位 9 | I/O — User I/O pin (bank 1) |
| 腳位 10 | I/O — User I/O pin (bank 1) |
| 腳位 11 | GND — Ground |
| 腳位 12 | I/O — User I/O pin (bank 1) |
| 腳位 13 | I/O — User I/O pin (bank 1) |
| 腳位 14 | I/O — User I/O pin (bank 1) |
| 腳位 15 | VCCINT — Core supply voltage (5V) |
| 腳位 16 | I/O — User I/O pin (bank 1) |
| 腳位 17 | I/O — User I/O pin (bank 1) |
| 腳位 18 | I/O — User I/O pin (bank 1) |
| 腳位 19 | I/O — User I/O pin (bank 1) |
| 腳位 20 | I/O — User I/O pin (bank 1) |
| 腳位 21 | GND — Ground |
| 腳位 22 | I/O — User I/O pin (bank 1) |
| 腳位 23 | I/O — User I/O pin (bank 1) |
| 腳位 24 | I/O — User I/O pin (bank 1) |
| 腳位 25 | I/O — User I/O pin (bank 1) |
| 腳位 26 | I/O — User I/O pin (bank 1) |
| 腳位 27 | VCCIO — I/O supply voltage |
| 腳位 28 | I/O — User I/O pin (bank 1) |
| 腳位 29 | I/O — User I/O pin (bank 1) |
| 腳位 30 | I/O — User I/O pin (bank 1) |
| 腳位 31 | I/O — User I/O pin (bank 1) |
| 腳位 32 | GND — Ground |
| 腳位 33 | I/O — User I/O pin (bank 2) |
| 腳位 34 | I/O — User I/O pin (bank 2) |
| 腳位 35 | I/O — User I/O pin (bank 2) |
| 腳位 36 | I/O — User I/O pin (bank 2) |
| 腳位 37 | I/O — User I/O pin (bank 2) |
| 腳位 38 | VCCINT — Core supply voltage (5V) |
| 腳位 39 | I/O — User I/O pin (bank 2) |
| 腳位 40 | I/O — User I/O pin (bank 2) |
| 腳位 41 | I/O — User I/O pin (bank 2) |
| 腳位 42 | I/O — User I/O pin (bank 2) |
| 腳位 43 | GND — Ground |
| 腳位 44 | I/O — User I/O pin (bank 2) |
| 腳位 45 | I/O — User I/O pin (bank 2) |
| 腳位 46 | I/O — User I/O pin (bank 2) |
| 腳位 47 | I/O — User I/O pin (bank 2) |
| 腳位 48 | VCCIO — I/O supply voltage |
| 腳位 49 | I/O — User I/O pin (bank 2) |
| 腳位 50 | I/O — User I/O pin (bank 2) |
| 腳位 51 | I/O — User I/O pin (bank 2) |
| 腳位 52 | I/O — User I/O pin (bank 2) |
| 腳位 53 | I/O — User I/O pin (bank 2) |
| 腳位 54 | GND — Ground |
| 腳位 55 | I/O — User I/O pin (bank 3) |
| 腳位 56 | I/O — User I/O pin (bank 3) |
| 腳位 57 | I/O — User I/O pin (bank 3) |
| 腳位 58 | I/O — User I/O pin (bank 3) |
| 腳位 59 | VCCINT — Core supply voltage (5V) |
| 腳位 60 | I/O — User I/O pin (bank 3) |
| 腳位 61 | I/O — User I/O pin (bank 3) |
| 腳位 62 | I/O — User I/O pin (bank 3) |
| 腳位 63 | I/O — User I/O pin (bank 3) |
| 腳位 64 | GND — Ground |
| 腳位 65 | I/O — User I/O pin (bank 3) |
| 腳位 66 | I/O — User I/O pin (bank 3) |
| 腳位 67 | I/O — User I/O pin (bank 3) |
| 腳位 68 | I/O — User I/O pin (bank 3) |
| 腳位 69 | I/O — User I/O pin (bank 3) |
| 腳位 70 | VCCIO — I/O supply voltage |
| 腳位 71 | I/O — User I/O pin (bank 3) |
| 腳位 72 | I/O — User I/O pin (bank 3) |
| 腳位 73 | I/O — User I/O pin (bank 3) |
| 腳位 74 | I/O — User I/O pin (bank 3) |
| 腳位 75 | GND — Ground |
| 腳位 76 | I/O — User I/O pin (bank 4) |
| 腳位 77 | I/O — User I/O pin (bank 4) |
| 腳位 78 | I/O — User I/O pin (bank 4) |
| 腳位 79 | I/O — User I/O pin (bank 4) |
| 腳位 80 | I/O — User I/O pin (bank 4) |
| 腳位 81 | VCCINT — Core supply voltage (5V) |
| 腳位 82 | I/O — User I/O pin (bank 4) |
| 腳位 83 | I/O — User I/O pin (bank 4) |
| 腳位 84 | I/O — User I/O pin (bank 4) |
| 腳位 85 | I/O — User I/O pin (bank 4) |
| 腳位 86 | GND — Ground |
| 腳位 87 | I/O — User I/O pin (bank 4) |
| 腳位 88 | I/O — User I/O pin (bank 4) |
| 腳位 89 | I/O — User I/O pin (bank 4) |
| 腳位 90 | I/O — User I/O pin (bank 4) |
| 腳位 91 | I/O — User I/O pin (bank 4) |
| 腳位 92 | VCCIO — I/O supply voltage |
| 腳位 93 | I/O — User I/O pin (bank 4) |
| 腳位 94 | I/O — User I/O pin (bank 4) |
| 腳位 95 | I/O — User I/O pin (bank 4) |
| 腳位 96 | I/O — User I/O pin (bank 4) |
| 腳位 97 | GND — Ground |
| 腳位 98 | I/O — User I/O pin (bank 5) |
| 腳位 99 | I/O — User I/O pin (bank 5) |
| 腳位 100 | I/O — User I/O pin (bank 5) |
| 腳位 101 | I/O — User I/O pin (bank 5) |
| 腳位 102 | VCCINT — Core supply voltage (5V) |
| 腳位 103 | I/O — User I/O pin (bank 5) |
| 腳位 104 | I/O — User I/O pin (bank 5) |
| 腳位 105 | I/O — User I/O pin (bank 5) |
| 腳位 106 | I/O — User I/O pin (bank 5) |
| 腳位 107 | GND — Ground |
| 腳位 108 | I/O — User I/O pin (bank 5) |
| 腳位 109 | I/O — User I/O pin (bank 5) |
| 腳位 110 | I/O — User I/O pin (bank 5) |
| 腳位 111 | I/O — User I/O pin (bank 5) |
| 腳位 112 | I/O — User I/O pin (bank 5) |
| 腳位 113 | VCCIO — I/O supply voltage |
| 腳位 114 | I/O — User I/O pin (bank 5) |
| 腳位 115 | I/O — User I/O pin (bank 5) |
| 腳位 116 | I/O — User I/O pin (bank 5) |
| 腳位 117 | I/O — User I/O pin (bank 5) |
| 腳位 118 | GND — Ground |
| 腳位 119 | I/O — User I/O pin (bank 6) |
| 腳位 120 | I/O — User I/O pin (bank 6) |
| 腳位 121 | I/O — User I/O pin (bank 6) |
| 腳位 122 | I/O — User I/O pin (bank 6) |
| 腳位 123 | VCCINT — Core supply voltage (5V) |
| 腳位 124 | I/O — User I/O pin (bank 6) |
| 腳位 125 | I/O — User I/O pin (bank 6) |
| 腳位 126 | I/O — User I/O pin (bank 6) |
| 腳位 127 | I/O — User I/O pin (bank 6) |
| 腳位 128 | GND — Ground |
| 腳位 129 | I/O — User I/O pin (bank 6) |
| 腳位 130 | I/O — User I/O pin (bank 6) |
| 腳位 131 | I/O — User I/O pin (bank 6) |
| 腳位 132 | I/O — User I/O pin (bank 6) |
| 腳位 133 | I/O — User I/O pin (bank 6) |
| 腳位 134 | VCCIO — I/O supply voltage |
| 腳位 135 | I/O — User I/O pin (bank 6) |
| 腳位 136 | I/O — User I/O pin (bank 6) |
| 腳位 137 | I/O — User I/O pin (bank 6) |
| 腳位 138 | I/O — User I/O pin (bank 6) |
| 腳位 139 | GND — Ground |
| 腳位 140 | I/O — User I/O pin (bank 7) |
| 腳位 141 | I/O — User I/O pin (bank 7) |
| 腳位 142 | I/O — User I/O pin (bank 7) |
| 腳位 143 | I/O — User I/O pin (bank 7) |
| 腳位 144 | VCCINT — Core supply voltage (5V) |
| 腳位 145 | I/O — User I/O pin (bank 7) |
| 腳位 146 | I/O — User I/O pin (bank 7) |
| 腳位 147 | I/O — User I/O pin (bank 7) |
| 腳位 148 | I/O — User I/O pin (bank 7) |
| 腳位 149 | GND — Ground |
| 腳位 150 | I/O — User I/O pin (bank 7) |
| 腳位 151 | I/O — User I/O pin (bank 7) |
| 腳位 152 | I/O — User I/O pin (bank 7) |
| 腳位 153 | I/O — User I/O pin (bank 7) |
| 腳位 154 | VCCIO — I/O supply voltage |
| 腳位 155 | I/O — User I/O pin (bank 7) |
| 腳位 156 | I/O — User I/O pin (bank 7) |
| 腳位 157 | I/O — User I/O pin (bank 7) |
| 腳位 158 | I/O — User I/O pin (bank 7) |
| 腳位 159 | GND — Ground |
| 腳位 160 | I/O — User I/O pin (bank 8) |
| 腳位 161 | I/O — User I/O pin (bank 8) |
| 腳位 162 | I/O — User I/O pin (bank 8) |
| 腳位 163 | VCCINT — Core supply voltage (5V) |
| 腳位 164 | I/O — User I/O pin (bank 8) |
| 腳位 165 | I/O — User I/O pin (bank 8) |
| 腳位 166 | I/O — User I/O pin (bank 8) |
| 腳位 167 | GND — Ground |
| 腳位 168 | I/O — User I/O pin (bank 8) |
| 腳位 169 | I/O — User I/O pin (bank 8) |
| 腳位 170 | I/O — User I/O pin (bank 8) |
| 腳位 171 | I/O — User I/O pin (bank 8) |
| 腳位 172 | I/O — User I/O pin (bank 8) |
| 腳位 173 | VCCIO — I/O supply voltage |
| 腳位 174 | I/O — User I/O pin (bank 8) |
| 腳位 175 | I/O — User I/O pin (bank 8) |
| 腳位 176 | I/O — User I/O pin (bank 8) |
| 腳位 177 | I/O — User I/O pin (bank 8) |
| 腳位 178 | GND — Ground |
| 腳位 179 | MSEL0 — Configuration mode select 0 |
| 腳位 180 | MSEL1 — Configuration mode select 1 |
| 腳位 181 | nSTATUS — Configuration status (open-drain) |
| 腳位 182 | nCONFIG — Configuration start (active-low) |
| 腳位 183 | DCLK — Configuration clock |
| 腳位 184 | DATA0 — Configuration data input |
| 腳位 185 | CONF_DONE — Configuration complete (open-drain) |
| 腳位 186 | TDI — JTAG test data in |
| 腳位 187 | TDO — JTAG test data out |
| 腳位 188 | TMS — JTAG test mode select |
| 腳位 189 | TCK — JTAG test clock |
| 腳位 190 | TRST — JTAG test reset (active-low) |
| 腳位 191 | VCCINT — Core supply voltage (5V) |
| 腳位 192 | GND — Ground |
| 腳位 193 | I/O — User I/O pin (bank 1) |
| 腳位 194 | I/O — User I/O pin (bank 1) |
| 腳位 195 | I/O — User I/O pin (bank 1) |
| 腳位 196 | I/O — User I/O pin (bank 1) |
| 腳位 197 | I/O — User I/O pin (bank 1) |
| 腳位 198 | VCCIO — I/O supply voltage |
| 腳位 199 | I/O — User I/O pin (bank 1) |
| 腳位 200 | I/O — User I/O pin (bank 1) |
| 腳位 201 | I/O — User I/O pin (bank 1) |
| 腳位 202 | I/O — User I/O pin (bank 1) |
| 腳位 203 | I/O — User I/O pin (bank 1) |
| 腳位 204 | GND — Ground |
| 腳位 205 | I/O — User I/O pin (bank 1) |
| 腳位 206 | I/O — User I/O pin (bank 1) |
| 腳位 207 | I/O — User I/O pin (bank 1) |
| 腳位 208 | I/O — User I/O pin (bank 1) |
典型應用
EPF8820ARI208-1 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 EPF8820ARI208-1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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) |
主要差異化特點
- Industrial temperature grade over commercial-speed variants (對比EPF8820ARC208-4)
- Fastest speed grade in the FLEX 8000 EPF8820 family (對比EPF8820ARC208-3)
- Higher logic density than EPF8636 in same footprint (對比EPF8636ARC208-4)
設計說明
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.
合規資訊
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.