EPF8820ARC208-2A - FLEX 8000 FPGA, 672 Logic Elements, 152 I/O | Altera
料号： EPF8820ARC208-2A ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $24.2 | $242.00 |
| 100 | $19.75 | $1,975.00 |
| 500 | $16.4 | $8,200.00 |
| 1,000 | $14.1 | $14,100.00 |
EPF8820ARC208-2A 概述
What is an FPGA? A Field-Programmable Gate Array is a programmable logic device containing an array of configurable logic blocks (CLBs/LABs), programmable routing channels, and programmable I/O cells. Unlike a CPLD (Complex Programmable Logic Device) which uses non-volatile EEPROM/Flash cells, the FLEX 8000 family uses volatile SRAM configuration cells - meaning the device must be reconfigured at every power-up using a serial configuration PROM (EPC1, EPC1064, EPC1213, or EPC1441) or a microcontroller. FPGAs sit in the broader hierarchy: programmable logic device (PLD) -> FPGA -> SRAM-based FPGA -> FLEX 8000 family.
Key features include 152 user I/O, 672 logic elements organized into 84 LABs, embedded SRAM for distributed memory, JTAG (IEEE 1149.1) boundary-scan test support, multiVolt I/O allowing 3.3 V or 5.0 V interface levels on VCCIO pins, and tri-state buffer control on every I/O. The architecture combines fine-grained logic with predictable interconnect delays suitable for synchronous state machines, FIFO buffers, and custom peripheral implementations.
Technical depth: the FLEX 8000 family uses a continuous-row LAB architecture with FastTrack Interconnect running horizontally and vertically between rows. Each LAB contains 8 logic elements, and each LE contains a 4-input look-up table (LUT), a programmable register, and dedicated carry chain logic. Embedded array blocks (EABs) provide on-chip RAM/ROM up to 2 Kbits per block. Configuration is loaded serially via the DATA0/DCLK/nCONFIG pins or in parallel via the EPC series PROMs.
Typical applications include 5 V-tolerant glue logic, PCI bus interface bridges (33 MHz, 32-bit), industrial control state machines, custom peripheral replacement on legacy 8051/MIPS systems, and telecom backplane glue. The 5 V tolerance on VCCIO pins allows direct interface to legacy TTL logic without level shifters.
Design consideration: the FLEX 8000 family is in legacy/last-time-buy status - confirm lifecycle before starting a new design. Always include a JTAG header for in-system programming (ISP) via the Altera ByteBlaster or USB-Blaster download cable.
This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, including lifecycle alerts and configuration PROM recommendations.
直接替换替代料： EPF8820ARC208-2A ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EPF8820ARC208-2A （相同外形与封装尺寸） ——差异在于 Process Technology, Package, Configuration Method, Usable Gates, In-Circuit Reconfigurability.
快速对比工具——选择替代料号进行并排对比：
EPF8820ARC208-2
✅ 直接替换✓ 有现货
$17.95 / 个
查看数据手册 →EPF8820ARC208-24
✅ 直接替换✓ 有现货
$27.8 / 个
查看数据手册 →EPF8820ARC208-2A
✅ 直接替换✓ 有现货
$14.1 / 个
查看数据手册 →EPF8820ARC208-2A 最大额定值与电气特性
| Family | FLEX 8000 |
| Device Type | FPGA (Field Programmable Gate Array) |
| Logic Elements | 672 |
| Logic Array Blocks (LABs) | 84 |
| User I/O Pins | 152 |
| Dedicated Inputs | 4 |
| Supply Voltage (VCCINT) | 4.75 V to 5.25 V |
| I/O Supply Voltage (VCCIO) | 3.3 V or 5.0 V selectable |
| Propagation Delay (tPD) | 5 ns (typical, -2A speed grade) |
| 工作温度 | 0 °C to 70 °C (commercial) |
| 封装 | 208-pin S-PQFP (Shrink Plastic Quad Flat Pack) with exposed pad |
| Terminal Pitch | 0.500 mm |
| Configuration Method | Serial SRAM, EPC1/EPC1064/EPC1213/EPC1441 PROM, or controller |
| JTAG Support | Yes (IEEE 1149.1 boundary-scan) |
| Process Technology | CMOS SRAM |
| 安装类型 | Surface Mount |
EPF8820ARC208-2A 引脚配置
| 引脚 1 | I/O — User I/O pin (bank 1) |
| 引脚 2 | I/O — User I/O pin (bank 1) |
| 引脚 3 | I/O — User I/O pin (bank 1) |
| 引脚 4 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 5 | I/O — User I/O pin (bank 1) |
| 引脚 6 | GND — Ground |
| 引脚 7 | I/O — User I/O pin (bank 1) |
| 引脚 8 | I/O — User I/O pin (bank 1) |
| 引脚 9 | I/O — User I/O pin (bank 1) |
| 引脚 10 | I/O — User I/O pin (bank 1) |
| 引脚 11 | I/O — User I/O pin (bank 1) |
| 引脚 12 | I/O — User I/O pin (bank 1) |
| 引脚 13 | I/O — User I/O pin (bank 1) |
| 引脚 14 | GND — Ground |
| 引脚 15 | VCCINT — Core supply voltage (5 V) |
| 引脚 16 | I/O — User I/O pin (bank 2) |
| 引脚 17 | I/O — User I/O pin (bank 2) |
| 引脚 18 | I/O — User I/O pin (bank 2) |
| 引脚 19 | I/O — User I/O pin (bank 2) |
| 引脚 20 | I/O — User I/O pin (bank 2) |
| 引脚 21 | I/O — User I/O pin (bank 2) |
| 引脚 22 | I/O — User I/O pin (bank 2) |
| 引脚 23 | I/O — User I/O pin (bank 2) |
| 引脚 24 | I/O — User I/O pin (bank 2) |
| 引脚 25 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 26 | GND — Ground |
| 引脚 27 | I/O — User I/O pin (bank 2) |
| 引脚 28 | I/O — User I/O pin (bank 2) |
| 引脚 29 | I/O — User I/O pin (bank 2) |
| 引脚 30 | I/O — User I/O pin (bank 2) |
| 引脚 31 | I/O — User I/O pin (bank 2) |
| 引脚 32 | I/O — User I/O pin (bank 2) |
| 引脚 33 | I/O — User I/O pin (bank 2) |
| 引脚 34 | I/O — User I/O pin (bank 2) |
| 引脚 35 | VCCINT — Core supply voltage (5 V) |
| 引脚 36 | GND — Ground |
| 引脚 37 | I/O — User I/O pin (bank 3) |
| 引脚 38 | I/O — User I/O pin (bank 3) |
| 引脚 39 | I/O — User I/O pin (bank 3) |
| 引脚 40 | I/O — User I/O pin (bank 3) |
| 引脚 41 | I/O — User I/O pin (bank 3) |
| 引脚 42 | I/O — User I/O pin (bank 3) |
| 引脚 43 | I/O — User I/O pin (bank 3) |
| 引脚 44 | I/O — User I/O pin (bank 3) |
| 引脚 45 | I/O — User I/O pin (bank 3) |
| 引脚 46 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 47 | GND — Ground |
| 引脚 48 | I/O — User I/O pin (bank 3) |
| 引脚 49 | I/O — User I/O pin (bank 3) |
| 引脚 50 | I/O — User I/O pin (bank 3) |
| 引脚 51 | I/O — User I/O pin (bank 3) |
| 引脚 52 | I/O — User I/O pin (bank 3) |
| 引脚 53 | I/O — User I/O pin (bank 3) |
| 引脚 54 | I/O — User I/O pin (bank 3) |
| 引脚 55 | I/O — User I/O pin (bank 3) |
| 引脚 56 | VCCINT — Core supply voltage (5 V) |
| 引脚 57 | GND — Ground |
| 引脚 58 | I/O — User I/O pin (bank 4) |
| 引脚 59 | I/O — User I/O pin (bank 4) |
| 引脚 60 | I/O — User I/O pin (bank 4) |
| 引脚 61 | I/O — User I/O pin (bank 4) |
| 引脚 62 | I/O — User I/O pin (bank 4) |
| 引脚 63 | I/O — User I/O pin (bank 4) |
| 引脚 64 | I/O — User I/O pin (bank 4) |
| 引脚 65 | I/O — User I/O pin (bank 4) |
| 引脚 66 | I/O — User I/O pin (bank 4) |
| 引脚 67 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 68 | GND — Ground |
| 引脚 69 | I/O — User I/O pin (bank 4) |
| 引脚 70 | I/O — User I/O pin (bank 4) |
| 引脚 71 | I/O — User I/O pin (bank 4) |
| 引脚 72 | I/O — User I/O pin (bank 4) |
| 引脚 73 | I/O — User I/O pin (bank 4) |
| 引脚 74 | I/O — User I/O pin (bank 4) |
| 引脚 75 | I/O — User I/O pin (bank 4) |
| 引脚 76 | I/O — User I/O pin (bank 4) |
| 引脚 77 | VCCINT — Core supply voltage (5 V) |
| 引脚 78 | GND — Ground |
| 引脚 79 | I/O — User I/O pin (bank 5) |
| 引脚 80 | I/O — User I/O pin (bank 5) |
| 引脚 81 | I/O — User I/O pin (bank 5) |
| 引脚 82 | I/O — User I/O pin (bank 5) |
| 引脚 83 | I/O — User I/O pin (bank 5) |
| 引脚 84 | I/O — User I/O pin (bank 5) |
| 引脚 85 | I/O — User I/O pin (bank 5) |
| 引脚 86 | I/O — User I/O pin (bank 5) |
| 引脚 87 | I/O — User I/O pin (bank 5) |
| 引脚 88 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 89 | GND — Ground |
| 引脚 90 | I/O — User I/O pin (bank 5) |
| 引脚 91 | I/O — User I/O pin (bank 5) |
| 引脚 92 | I/O — User I/O pin (bank 5) |
| 引脚 93 | I/O — User I/O pin (bank 5) |
| 引脚 94 | I/O — User I/O pin (bank 5) |
| 引脚 95 | I/O — User I/O pin (bank 5) |
| 引脚 96 | I/O — User I/O pin (bank 5) |
| 引脚 97 | I/O — User I/O pin (bank 5) |
| 引脚 98 | VCCINT — Core supply voltage (5 V) |
| 引脚 99 | GND — Ground |
| 引脚 100 | I/O — User I/O pin (bank 6) |
| 引脚 101 | I/O — User I/O pin (bank 6) |
| 引脚 102 | I/O — User I/O pin (bank 6) |
| 引脚 103 | I/O — User I/O pin (bank 6) |
| 引脚 104 | I/O — User I/O pin (bank 6) |
| 引脚 105 | I/O — User I/O pin (bank 6) |
| 引脚 106 | I/O — User I/O pin (bank 6) |
| 引脚 107 | I/O — User I/O pin (bank 6) |
| 引脚 108 | I/O — User I/O pin (bank 6) |
| 引脚 109 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 110 | GND — Ground |
| 引脚 111 | I/O — User I/O pin (bank 6) |
| 引脚 112 | I/O — User I/O pin (bank 6) |
| 引脚 113 | I/O — User I/O pin (bank 6) |
| 引脚 114 | I/O — User I/O pin (bank 6) |
| 引脚 115 | I/O — User I/O pin (bank 6) |
| 引脚 116 | I/O — User I/O pin (bank 6) |
| 引脚 117 | I/O — User I/O pin (bank 6) |
| 引脚 118 | I/O — User I/O pin (bank 6) |
| 引脚 119 | VCCINT — Core supply voltage (5 V) |
| 引脚 120 | GND — Ground |
| 引脚 121 | I/O — User I/O pin (bank 7) |
| 引脚 122 | I/O — User I/O pin (bank 7) |
| 引脚 123 | I/O — User I/O pin (bank 7) |
| 引脚 124 | I/O — User I/O pin (bank 7) |
| 引脚 125 | I/O — User I/O pin (bank 7) |
| 引脚 126 | I/O — User I/O pin (bank 7) |
| 引脚 127 | I/O — User I/O pin (bank 7) |
| 引脚 128 | I/O — User I/O pin (bank 7) |
| 引脚 129 | I/O — User I/O pin (bank 7) |
| 引脚 130 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 131 | GND — Ground |
| 引脚 132 | I/O — User I/O pin (bank 7) |
| 引脚 133 | I/O — User I/O pin (bank 7) |
| 引脚 134 | I/O — User I/O pin (bank 7) |
| 引脚 135 | I/O — User I/O pin (bank 7) |
| 引脚 136 | I/O — User I/O pin (bank 7) |
| 引脚 137 | I/O — User I/O pin (bank 7) |
| 引脚 138 | I/O — User I/O pin (bank 7) |
| 引脚 139 | I/O — User I/O pin (bank 7) |
| 引脚 140 | VCCINT — Core supply voltage (5 V) |
| 引脚 141 | GND — Ground |
| 引脚 142 | I/O — User I/O pin (bank 8) |
| 引脚 143 | I/O — User I/O pin (bank 8) |
| 引脚 144 | I/O — User I/O pin (bank 8) |
| 引脚 145 | I/O — User I/O pin (bank 8) |
| 引脚 146 | I/O — User I/O pin (bank 8) |
| 引脚 147 | I/O — User I/O pin (bank 8) |
| 引脚 148 | I/O — User I/O pin (bank 8) |
| 引脚 149 | I/O — User I/O pin (bank 8) |
| 引脚 150 | I/O — User I/O pin (bank 8) |
| 引脚 151 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| 引脚 152 | GND — Ground |
| 引脚 153 | I/O — User I/O pin (bank 8) |
| 引脚 154 | I/O — User I/O pin (bank 8) |
| 引脚 155 | I/O — User I/O pin (bank 8) |
| 引脚 156 | I/O — User I/O pin (bank 8) |
| 引脚 157 | I/O — User I/O pin (bank 8) |
| 引脚 158 | I/O — User I/O pin (bank 8) |
| 引脚 159 | I/O — User I/O pin (bank 8) |
| 引脚 160 | I/O — User I/O pin (bank 8) |
| 引脚 161 | VCCINT — Core supply voltage (5 V) |
| 引脚 162 | DCLK — Configuration clock (dedicated input) |
| 引脚 163 | nCONFIG — Configuration start (dedicated input, active low) |
| 引脚 164 | nSTATUS — Configuration status (dedicated output, open-drain) |
| 引脚 165 | CONF_DONE — Configuration done (dedicated output, open-drain) |
| 引脚 166 | DATA0 — Configuration data input (dedicated) |
| 引脚 167 | DEV_OE — Device-wide output enable (dedicated input) |
| 引脚 168 | DEV_CLRn — Device-wide clear (dedicated input, active low) |
| 引脚 169 | TDI — JTAG test data in (dedicated) |
| 引脚 170 | TMS — JTAG test mode select (dedicated) |
| 引脚 171 | TCK — JTAG test clock (dedicated) |
| 引脚 172 | TDO — JTAG test data out (dedicated) |
| 引脚 173 | MSEL0 — Configuration mode select bit 0 |
| 引脚 174 | MSEL1 — Configuration mode select bit 1 |
| 引脚 175 | VCCINT — Core supply voltage (5 V) |
| 引脚 176 | GND — Ground (exposed thermal pad) |
| 引脚 177 | GND — Ground |
| 引脚 178 | GND — Ground |
| 引脚 179 | GND — Ground |
| 引脚 180 | GND — Ground |
| 引脚 181 | GND — Ground |
| 引脚 182 | GND — Ground |
| 引脚 183 | GND — Ground |
| 引脚 184 | GND — Ground |
| 引脚 185 | GND — Ground |
| 引脚 186 | GND — Ground |
| 引脚 187 | GND — Ground |
| 引脚 188 | GND — Ground |
| 引脚 189 | GND — Ground |
| 引脚 190 | GND — Ground |
| 引脚 191 | GND — Ground |
| 引脚 192 | GND — Ground |
| 引脚 193 | GND — Ground |
| 引脚 194 | GND — Ground |
| 引脚 195 | GND — Ground |
| 引脚 196 | GND — Ground |
| 引脚 197 | GND — Ground |
| 引脚 198 | GND — Ground |
| 引脚 199 | GND — Ground |
| 引脚 200 | GND — Ground |
| 引脚 201 | GND — Ground |
| 引脚 202 | GND — Ground |
| 引脚 203 | GND — Ground |
| 引脚 204 | GND — Ground |
| 引脚 205 | GND — Ground |
| 引脚 206 | GND — Ground |
| 引脚 207 | GND — Ground |
| 引脚 208 | GND — Ground (center exposed thermal pad - solder to PCB thermal plane) |
典型应用
EPF8820ARC208-2A 适用于 6 应用s: 5V PCI Bus Interface Bridge, Industrial Glue Logic Replacement, Legacy Microcontroller Peripheral Expansion, Telecom Backplane Glue Logic, Custom FIFO and DMA Controller, JTAG-Driven In-System Programming (ISP) Hub.
5V PCI Bus Interface Bridge
The EPF8820ARC208-2A's 5 V VCCIO multiVolt I/O support and 152 user I/O make it a natural fit for 33 MHz, 32-bit PCI bus interface bridges on legacy industrial PCs and embedded systems. Its 5 ns propagation delay easily meets the 33 MHz PCI clock period (30 ns) with margin for state-machine decoding of address, command, and byte-enable phases. Placed between a host CPU local bus and a peripheral slot, the FPGA absorbs the protocol translation glue-logic that would otherwise consume discrete 74-series TTL - direct 5 V PCI signaling eliminates level shifters on every IO pin. Use the JTAG chain for in-system firmware updates.
推荐
Industrial Glue Logic Replacement
On legacy 5 V industrial control boards, the EPF8820ARC208-2A consolidates dozens of 74LS/74F series TTL packages into a single programmable device. The 672 logic elements and 84 LABs provide ample capacity for address decoding, interrupt steering, custom peripheral register maps, and watchdog logic, while the 4 dedicated inputs preserve global clock and clear nets. Operating from a 4.75-5.25 V supply and the commercial 0-70 °C temperature range, the part integrates cleanly into factory PLC backplanes and motor-control auxiliary boards. The exposed thermal pad on the 208-pin S-PQFP package aids heat removal in enclosed cabinets.
推荐
Legacy Microcontroller Peripheral Expansion
When extending a legacy 8051, 68HC11, or MIPS-based microcontroller with custom peripherals, the EPF8820ARC208-2A adds parallel ports, custom bus protocols, and timer/counter chains without modifying the host CPU. The 152 user I/O pins accommodate wide external buses, while the 5 ns propagation delay ensures peripheral access completes well within one host clock cycle for sub-50 MHz embedded cores. Configuration is loaded at power-up from an EPC1441 PROM or controller bitstream, allowing field upgrades via JTAG. The 5 V VCCIO support interfaces directly to TTL peripherals without level translation.
推荐
Telecom Backplane Glue Logic
Telecom backplanes of the late 1990s/early 2000s relied on the EPF8820ARC208-2A's FLEX 8000 family for serial-to-parallel conversion, clock-domain crossing, and T1/E1 framing glue between line cards and a central crossbar. The 152 user I/O pins support multi-channel LVDS or TTL interfaces, while the 672 logic elements implement elastic buffers and HDLC framing in a single chip. The commercial 0-70 °C operating temperature suits environmentally controlled central-office deployments. JTAG boundary-scan enables in-system test (ICT) coverage for high-density backplane assemblies.
推荐
Custom FIFO and DMA Controller
The EPF8820ARC208-2A's embedded array blocks (EABs) provide on-chip dual-port RAM suitable for custom FIFO buffers between asynchronous clock domains, while the LABs implement the DMA address-generation state machine. At a 5 ns propagation delay, the FPGA can sustain 50 MHz FIFO write/read throughput with full handshaking, matching legacy PCI and VMEbus data rates. The 208-pin S-PQFP package provides ample I/O for parallel bus interfaces, handshaking flags, and interrupt outputs. Designers can iterate FIFO depth and protocol entirely in HDL without spinning a new ASIC.
推荐
JTAG-Driven In-System Programming (ISP) Hub
The EPF8820ARC208-2A's dedicated JTAG pins and stable FLEX 8000 silicon make it a reliable hub for chaining multiple configuration PROMs, CPLDs, and FPGAs on a single JTAG scan path. Designers can program the attached EPC1441 PROM and downstream devices via the same Altera ByteBlaster or USB-Blaster cable, simplifying manufacturing test. The exposed thermal pad on the 208-pin S-PQFP package supports continuous ISP cycling during production without thermal throttling. Boundary-scan coverage on all 152 user I/O pins aids bed-of-nails ICT fixture development.
推荐
推荐产品汇总
工程参考数据： EPF8820ARC208-2A ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EPF8820ARC208-2 | EPF8820ARC208-24 |
|---|---|---|---|
| Package | 208-pin S-PQFP (0.500 mm pitch) | 208-pin S-PQFP (0.500 mm pitch) - same | 208-pin S-PQFP (0.500 mm pitch) - same |
| Brand | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) |
| Logic Elements | 672 | 672 | 672 |
| User I/O | 152 | 152 | 152 |
| Speed Grade | -2A (~5 ns tPD) | -2 (~5 ns tPD) | -4 (~8 ns tPD, slower) |
| VCCINT Supply | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| VCCIO Levels | 3.3 V or 5.0 V selectable | 3.3 V or 5.0 V selectable | 3.3 V or 5.0 V selectable |
| Operating Temperature | 0 °C to 70 °C (commercial) | 0 °C to 70 °C (commercial) | 0 °C to 70 °C (commercial) |
| Lifecycle Status | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) |
| Configuration PROM | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 |
关键差异点
- MultiVolt I/O supports both 3.3 V and 5.0 V signaling on the same die （对比 EPF8820ARC208-2 (same die, identical multiVolt I/O))
- Drop-in pin-compatible across -2A, -2, and -4 speed grades （对比 EPF8820ARC208-24)
- Native 5 V VCCINT and VCCIO operation on legacy FLEX 8000 silicon （对比 Modern Altera Cyclone IV EP4CE6 (TQFP-144))
设计说明
The EPF8820ARC208-2A requires a stable 5.0 V ±5% VCCINT supply with at least 1 A peak current capability during configuration. Decouple each VCCINT pin with a 0.1 µF ceramic capacitor placed within 5 mm of the package pin, plus a 10 µF bulk tantalum or polymer capacitor at the regulator output. VCCIO can be tied to either 3.3 V or 5.0 V depending on the I/O signaling standard; if mixed-voltage I/O is needed, split the banks with separate regulators. Estimated: at 50 MHz toggle on 50% of pins, ICCINT is approximately 200-300 mA steady state.
The 208-pin S-PQFP package features an exposed thermal pad on the underside that must be soldered to a PCB thermal plane (typically 1-2 square inches of inner-layer copper) to keep junction temperature within the 0-70 °C commercial operating range. Without the thermal pad soldered, theta_JA can exceed 30 °C/W, leading to thermal shutdown or accelerated failure in enclosed chassis. In forced-air environments (>1 m/s airflow) the part can dissipate up to 1.5 W reliably. Estimated: at 1.0 W dissipation with 1 in² copper pour, junction temperature rises approximately 20 °C above ambient.
Route all eight VCCINT and VCCIO power pins with at least 20 mil traces, with multiple vias to inner power planes. The JTAG chain (TDI, TMS, TCK, TDO) must be brought out to a 2x5 or 2x10 0.1-inch header for the Altera ByteBlaster or USB-Blaster download cable. Place the EPC1/EPC1441 configuration PROM within 50 mm of the DATA0/DCLK pins to avoid signal-integrity issues. Keep the 0.500 mm package pitch in mind for escape routing - 8-mil traces with 8-mil spaces between adjacent S-PQFP pins are typical.
Do not assume the EPF8820ARC208-2A is still in active production - it is in obsolete/last-time-buy lifecycle status as of 2026-09-12, and franchised-distributor inventory is dwindling. Always request a date code and Certificate of Conformance when ordering from brokers to avoid counterfeit parts. Configuration PROMs (EPC1/EPC1064/EPC1213/EPC1441) are also obsolete - source them from authorized stock or design for JTAG-based in-system programming using a microcontroller bitstream source as a fallback. Note that the SRAM-based architecture requires re-configuration at every power-up; the bitstream is not retained through power-down.
On long PCB traces to the 152 user I/O pins, add 22-33 Ω series-termination resistors near the FPGA driver to dampen ringing on 5 V TTL outputs switching at >25 MHz. For high-fanout clock or control nets (DEV_OE, DEV_CLRn), use a clock buffer (e.g., 74F244) to isolate the FPGA from capacitive loading. When interfacing to 3.3 V peripherals, ensure VCCIO is set to 3.3 V on the relevant I/O bank; mixing VCCIO=5 V and a 3.3 V device on the same bank can damage the peripheral. Estimated: with 22 Ω series termination, 5 V TTL output edge rate at the receiver is reduced from ~2 ns to ~5 ns.
合规信息
Compliance status not documented in verified web data - check distributor listing or manufacturer declaration. Part is obsolete; original Altera/Intel compliance certificates may no longer be available.
