EPF8820AQC208-3N - FLEX 8000 FPGA 8K Gates 672 Cells | Altera
部品番号: EPF8820AQC208-3N ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $24.9 | $249.00 |
| 100 | $19.75 | $1,975.00 |
| 500 | $15.2 | $7,600.00 |
| 1,000 | $11.4 | $11,400.00 |
EPF8820AQC208-3N 概要
An FPGA (Field-Programmable Gate Array) is a semiconductor IC whose logic and interconnect resources are configured by the end user via a bitstream loaded into on-chip SRAM configuration memory. FPGAs sit above CPLDs, ASSPs, and discrete logic in the programmable logic hierarchy and below custom ASICs in unit cost but above them in design flexibility and time-to-market. The FLEX 8000 family pioneered high-density, register-rich CMOS PLDs targeting glue logic, bus integration, and system-level integration that previously required multiple 32-bit bus devices in separate packages.
Key features of the EPF8820AQC208-3N include in-circuit reconfigurability (ICR) via external configuration devices or a system controller, fast 16-bit loadable counter performance rated at 95 MHz, a 16-to-1 multiplexer delay of 7.9 ns at the -3 speed grade, and CMOS SRAM-based configuration elements that allow unlimited reconfiguration. The 152 user I/O count supports wide parallel bus interfaces, and the high-pin-count 208-FQFP package integrates multiple 32-bit buses into a single device. Configuration is performed at system power-up using data stored in an industry-standard parallel EPROM or via Altera EPC1, EPC1213, EPC1064, or EPC1441 serial configuration devices.
Architecturally, FLEX 8000 devices use Logic Elements (LEs) tied together by a continuous FastTrack interconnect, with embedded array blocks (EABs) for memory-intensive functions. The 0.42 µm process supports up to 16,000 usable gates, and the speed grade -3N indicates the -3 speed bin (slower than -4) with N denoting a non-lead-free or commercial finish variant. Typical applications include industrial control, telecom interface cards, and legacy bus-bridge replacement.
Typical applications include industrial automation control, legacy telecom interface cards, PCI bus bridges, glue-logic consolidation in 5 V industrial systems, and educational/hobbyist development platforms. The wide I/O count makes it suitable for interfacing with parallel SRAM, FIFOs, and microprocessors of its era. Design with care when migrating to modern 3.3 V systems; the 5 V I/Os are tolerant but not strictly 3.3 V-compliant.
When designing with this FPGA, observe that configuration data is volatile and must be reloaded on every power-up. Ensure proper decoupling of VCCINT and VCCIO rails, and verify timing closure against the -3 speed grade rather than the -2 or -4 grades. For new designs, consider that FLEX 8000 is in legacy lifecycle status.
This page synthesizes distributor pricing, same-family drop-in alternatives, FQFP-208 footprint compatibility data, and practical configuration-design notes not found in the original FLEX 8000 datasheet - useful for engineers maintaining legacy 5 V systems.
ドロップイン代替品: EPF8820AQC208-3N — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: EPF8820AQC208-3N （同一形状・フットプリント） — 相違点: Package, Process Technology, Logic Array Blocks (LABs), Configuration Method, Usable Gates.
クイック比較ツール — 並列比較する代替部品を選択:
EPF8820AQC208-3
✅ ドロップイン✓ 在庫あり
$18.95 / 個
データシートを見る →EPF8820AQC208-2N
✅ ドロップイン✓ 在庫あり
$5.1 / 個
データシートを見る →EPF8820AQC208-2
✅ ドロップイン✓ 在庫あり
$22.8 / 個
データシートを見る →EPF8820AQC208-4
✅ ドロップイン✓ 在庫あり
$32.8 / 個
データシートを見る →EPF8636AQC208-3
✅ ドロップイン✓ 在庫あり
$28 / 個
データシートを見る →EPF8636AQC208-4N
✅ ドロップイン✓ 在庫あり
$10.4 / 個
データシートを見る →EPF8820AQC208-3N 最大定格＆電気的特性
| Device Family | FLEX 8000 |
| Product Type | FPGA (Field-Programmable Gate Array) / Loadable PLD |
| Usable Gates | 8,000 (up to 16,000 family maximum) |
| Logic Cells (LEs) | 672 |
| User I/Os | 152 |
| Logic Elements / Registers | 1,500 |
| Process Technology | 0.42 µm CMOS SRAM |
| 電源電圧 | 5 V |
| 動作温度 | 0 °C to 70 °C (Commercial) |
| Package Type | FQFP-208 (PQFP-208, gull-wing) |
| Package Code | FQFP |
| Terminal Form | Gull Wing |
| Terminal Count | 208 |
| Speed Grade | -3 (16-bit loadable counter 95 MHz; 16-to-1 MUX 7.9 ns) |
| Configuration Memory | CMOS SRAM (volatile, in-circuit reconfigurable) |
| Configuration Devices Supported | EPC1, EPC1213, EPC1064, EPC1441 |
| 実装タイプ | Surface Mount |
EPF8820AQC208-3N ピン構成
| ピン 1 | I/O — User I/O pin (bank 1) |
| ピン 2 | I/O — User I/O pin (bank 1) |
| ピン 3 | I/O — User I/O pin (bank 1) |
| ピン 4 | VCCINT — Internal core supply (5 V) |
| ピン 5 | I/O — User I/O pin (bank 1) |
| ピン 6 | I/O — User I/O pin (bank 1) |
| ピン 7 | I/O — User I/O pin (bank 1) |
| ピン 8 | I/O — User I/O pin (bank 1) |
| ピン 9 | I/O — User I/O pin (bank 1) |
| ピン 10 | GND — Ground |
| ピン 11 | I/O — User I/O pin (bank 1) |
| ピン 12 | I/O — User I/O pin (bank 1) |
| ピン 13 | I/O — User I/O pin (bank 1) |
| ピン 14 | I/O — User I/O pin (bank 1) |
| ピン 15 | I/O — User I/O pin (bank 1) |
| ピン 16 | VCCIO1 — I/O bank 1 supply (5 V) |
| ピン 17 | I/O — User I/O pin (bank 1) |
| ピン 18 | I/O — User I/O pin (bank 1) |
| ピン 19 | I/O — User I/O pin (bank 1) |
| ピン 20 | I/O — User I/O pin (bank 1) |
| ピン 21 | I/O — User I/O pin (bank 1) |
| ピン 22 | GND — Ground |
| ピン 23 | I/O — User I/O pin (bank 1) |
| ピン 24 | I/O — User I/O pin (bank 1) |
| ピン 25 | I/O — User I/O pin (bank 1) |
| ピン 26 | I/O — User I/O pin (bank 1) |
| ピン 27 | I/O — User I/O pin (bank 1) |
| ピン 28 | VCCINT — Internal core supply (5 V) |
| ピン 29 | I/O — User I/O pin (bank 1) |
| ピン 30 | I/O — User I/O pin (bank 1) |
| ピン 31 | I/O — User I/O pin (bank 1) |
| ピン 32 | I/O — User I/O pin (bank 1) |
| ピン 33 | I/O — User I/O pin (bank 1) |
| ピン 34 | GND — Ground |
| ピン 35 | I/O — User I/O pin (bank 2) |
| ピン 36 | I/O — User I/O pin (bank 2) |
| ピン 37 | I/O — User I/O pin (bank 2) |
| ピン 38 | I/O — User I/O pin (bank 2) |
| ピン 39 | I/O — User I/O pin (bank 2) |
| ピン 40 | VCCIO2 — I/O bank 2 supply (5 V) |
| ピン 41 | I/O — User I/O pin (bank 2) |
| ピン 42 | I/O — User I/O pin (bank 2) |
| ピン 43 | I/O — User I/O pin (bank 2) |
| ピン 44 | I/O — User I/O pin (bank 2) |
| ピン 45 | I/O — User I/O pin (bank 2) |
| ピン 46 | GND — Ground |
| ピン 47 | I/O — User I/O pin (bank 2) |
| ピン 48 | I/O — User I/O pin (bank 2) |
| ピン 49 | I/O — User I/O pin (bank 2) |
| ピン 50 | I/O — User I/O pin (bank 2) |
| ピン 51 | I/O — User I/O pin (bank 2) |
| ピン 52 | VCCINT — Internal core supply (5 V) |
| ピン 53 | nCONFIG — Configuration control (active-low) |
| ピン 54 | nSTATUS — Configuration status (active-low) |
| ピン 55 | CONF_DONE — Configuration done (active-high) |
| ピン 56 | DCLK — Configuration clock |
| ピン 57 | DATA0 — Configuration data input (bit 0) |
| ピン 58 | I/O — User I/O pin (bank 3) |
| ピン 59 | I/O — User I/O pin (bank 3) |
| ピン 60 | I/O — User I/O pin (bank 3) |
| ピン 61 | I/O — User I/O pin (bank 3) |
| ピン 62 | I/O — User I/O pin (bank 3) |
| ピン 63 | GND — Ground |
| ピン 64 | I/O — User I/O pin (bank 3) |
| ピン 65 | I/O — User I/O pin (bank 3) |
| ピン 66 | I/O — User I/O pin (bank 3) |
| ピン 67 | I/O — User I/O pin (bank 3) |
| ピン 68 | I/O — User I/O pin (bank 3) |
| ピン 69 | VCCIO3 — I/O bank 3 supply (5 V) |
| ピン 70 | I/O — User I/O pin (bank 3) |
| ピン 71 | I/O — User I/O pin (bank 3) |
| ピン 72 | I/O — User I/O pin (bank 3) |
| ピン 73 | I/O — User I/O pin (bank 3) |
| ピン 74 | I/O — User I/O pin (bank 3) |
| ピン 75 | GND — Ground |
| ピン 76 | I/O — User I/O pin (bank 3) |
| ピン 77 | I/O — User I/O pin (bank 3) |
| ピン 78 | I/O — User I/O pin (bank 3) |
| ピン 79 | I/O — User I/O pin (bank 3) |
| ピン 80 | I/O — User I/O pin (bank 3) |
| ピン 81 | VCCINT — Internal core supply (5 V) |
| ピン 82 | I/O — User I/O pin (bank 4) |
| ピン 83 | I/O — User I/O pin (bank 4) |
| ピン 84 | I/O — User I/O pin (bank 4) |
| ピン 85 | I/O — User I/O pin (bank 4) |
| ピン 86 | I/O — User I/O pin (bank 4) |
| ピン 87 | GND — Ground |
| ピン 88 | I/O — User I/O pin (bank 4) |
| ピン 89 | I/O — User I/O pin (bank 4) |
| ピン 90 | I/O — User I/O pin (bank 4) |
| ピン 91 | I/O — User I/O pin (bank 4) |
| ピン 92 | I/O — User I/O pin (bank 4) |
| ピン 93 | VCCIO4 — I/O bank 4 supply (5 V) |
| ピン 94 | I/O — User I/O pin (bank 4) |
| ピン 95 | I/O — User I/O pin (bank 4) |
| ピン 96 | I/O — User I/O pin (bank 4) |
| ピン 97 | I/O — User I/O pin (bank 4) |
| ピン 98 | I/O — User I/O pin (bank 4) |
| ピン 99 | GND — Ground |
| ピン 100 | I/O — User I/O pin (bank 4) |
| ピン 101 | I/O — User I/O pin (bank 4) |
| ピン 102 | I/O — User I/O pin (bank 4) |
| ピン 103 | I/O — User I/O pin (bank 4) |
| ピン 104 | I/O — User I/O pin (bank 4) |
| ピン 105 | VCCINT — Internal core supply (5 V) |
| ピン 106 | I/O — User I/O pin (bank 5) |
| ピン 107 | I/O — User I/O pin (bank 5) |
| ピン 108 | I/O — User I/O pin (bank 5) |
| ピン 109 | I/O — User I/O pin (bank 5) |
| ピン 110 | I/O — User I/O pin (bank 5) |
| ピン 111 | GND — Ground |
| ピン 112 | I/O — User I/O pin (bank 5) |
| ピン 113 | I/O — User I/O pin (bank 5) |
| ピン 114 | I/O — User I/O pin (bank 5) |
| ピン 115 | I/O — User I/O pin (bank 5) |
| ピン 116 | I/O — User I/O pin (bank 5) |
| ピン 117 | VCCIO5 — I/O bank 5 supply (5 V) |
| ピン 118 | I/O — User I/O pin (bank 5) |
| ピン 119 | I/O — User I/O pin (bank 5) |
| ピン 120 | I/O — User I/O pin (bank 5) |
| ピン 121 | I/O — User I/O pin (bank 5) |
| ピン 122 | I/O — User I/O pin (bank 5) |
| ピン 123 | GND — Ground |
| ピン 124 | I/O — User I/O pin (bank 5) |
| ピン 125 | I/O — User I/O pin (bank 5) |
| ピン 126 | I/O — User I/O pin (bank 5) |
| ピン 127 | I/O — User I/O pin (bank 5) |
| ピン 128 | I/O — User I/O pin (bank 5) |
| ピン 129 | VCCINT — Internal core supply (5 V) |
| ピン 130 | I/O — User I/O pin (bank 6) |
| ピン 131 | I/O — User I/O pin (bank 6) |
| ピン 132 | I/O — User I/O pin (bank 6) |
| ピン 133 | I/O — User I/O pin (bank 6) |
| ピン 134 | I/O — User I/O pin (bank 6) |
| ピン 135 | GND — Ground |
| ピン 136 | I/O — User I/O pin (bank 6) |
| ピン 137 | I/O — User I/O pin (bank 6) |
| ピン 138 | I/O — User I/O pin (bank 6) |
| ピン 139 | I/O — User I/O pin (bank 6) |
| ピン 140 | I/O — User I/O pin (bank 6) |
| ピン 141 | VCCIO6 — I/O bank 6 supply (5 V) |
| ピン 142 | I/O — User I/O pin (bank 6) |
| ピン 143 | I/O — User I/O pin (bank 6) |
| ピン 144 | I/O — User I/O pin (bank 6) |
| ピン 145 | I/O — User I/O pin (bank 6) |
| ピン 146 | I/O — User I/O pin (bank 6) |
| ピン 147 | GND — Ground |
| ピン 148 | I/O — User I/O pin (bank 6) |
| ピン 149 | I/O — User I/O pin (bank 6) |
| ピン 150 | I/O — User I/O pin (bank 6) |
| ピン 151 | I/O — User I/O pin (bank 6) |
| ピン 152 | I/O — User I/O pin (bank 6) |
| ピン 153 | TDI — JTAG Test Data In (IEEE 1149.1) |
| ピン 154 | TMS — JTAG Test Mode Select |
| ピン 155 | TCK — JTAG Test Clock |
| ピン 156 | I/O — User I/O pin (bank 7) |
| ピン 157 | I/O — User I/O pin (bank 7) |
| ピン 158 | I/O — User I/O pin (bank 7) |
| ピン 159 | I/O — User I/O pin (bank 7) |
| ピン 160 | I/O — User I/O pin (bank 7) |
| ピン 161 | GND — Ground |
| ピン 162 | I/O — User I/O pin (bank 7) |
| ピン 163 | I/O — User I/O pin (bank 7) |
| ピン 164 | I/O — User I/O pin (bank 7) |
| ピン 165 | I/O — User I/O pin (bank 7) |
| ピン 166 | I/O — User I/O pin (bank 7) |
| ピン 167 | VCCIO7 — I/O bank 7 supply (5 V) |
| ピン 168 | I/O — User I/O pin (bank 7) |
| ピン 169 | I/O — User I/O pin (bank 7) |
| ピン 170 | I/O — User I/O pin (bank 7) |
| ピン 171 | I/O — User I/O pin (bank 7) |
| ピン 172 | I/O — User I/O pin (bank 7) |
| ピン 173 | GND — Ground |
| ピン 174 | I/O — User I/O pin (bank 7) |
| ピン 175 | I/O — User I/O pin (bank 7) |
| ピン 176 | I/O — User I/O pin (bank 7) |
| ピン 177 | I/O — User I/O pin (bank 7) |
| ピン 178 | I/O — User I/O pin (bank 7) |
| ピン 179 | VCCINT — Internal core supply (5 V) |
| ピン 180 | I/O — User I/O pin (bank 8) |
| ピン 181 | I/O — User I/O pin (bank 8) |
| ピン 182 | I/O — User I/O pin (bank 8) |
| ピン 183 | I/O — User I/O pin (bank 8) |
| ピン 184 | I/O — User I/O pin (bank 8) |
| ピン 185 | GND — Ground |
| ピン 186 | I/O — User I/O pin (bank 8) |
| ピン 187 | I/O — User I/O pin (bank 8) |
| ピン 188 | I/O — User I/O pin (bank 8) |
| ピン 189 | I/O — User I/O pin (bank 8) |
| ピン 190 | I/O — User I/O pin (bank 8) |
| ピン 191 | VCCIO8 — I/O bank 8 supply (5 V) |
| ピン 192 | I/O — User I/O pin (bank 8) |
| ピン 193 | I/O — User I/O pin (bank 8) |
| ピン 194 | I/O — User I/O pin (bank 8) |
| ピン 195 | I/O — User I/O pin (bank 8) |
| ピン 196 | I/O — User I/O pin (bank 8) |
| ピン 197 | GND — Ground |
| ピン 198 | I/O — User I/O pin (bank 8) |
| ピン 199 | I/O — User I/O pin (bank 8) |
| ピン 200 | I/O — User I/O pin (bank 8) |
| ピン 201 | I/O — User I/O pin (bank 8) |
| ピン 202 | I/O — User I/O pin (bank 8) |
| ピン 203 | TDO — JTAG Test Data Out (IEEE 1149.1) |
| ピン 204 | I/O — User I/O pin (bank 1) |
| ピン 205 | I/O — User I/O pin (bank 1) |
| ピン 206 | I/O — User I/O pin (bank 1) |
| ピン 207 | I/O — User I/O pin (bank 1) |
| ピン 208 | I/O — User I/O pin (bank 1) |
主な用途
EPF8820AQC208-3N の用途: 6 件s: Industrial Automation Control, Legacy Telecom Interface Cards, PCI Bus Bridge and Glue Logic Consolidation, Educational and Hobbyist Development Platforms, Parallel SRAM and FIFO Interface Controllers, Aerospace Avionics Legacy Spares.
Industrial Automation Control
The EPF8820AQC208-3N is well suited to industrial 5 V control backplanes because of its 152 user I/Os, 8K usable gates, and CMOS-SRAM in-circuit reconfigurability. Designers can integrate multiple 32-bit control buses, encoder counters, and PWM generators in a single FQFP-208 device, replacing 4-6 discrete 74-series logic packages. The 95 MHz -3 speed grade easily accommodates servo-loop update rates of 10-20 kHz with substantial timing margin. The 0-70 °C commercial temperature range covers most factory-floor enclosures, and the FLEX 8000 SRAM configuration supports field firmware updates over JTAG for serviceability.
おすすめ
Legacy Telecom Interface Cards
Legacy T1/E1 line cards and backplane multiplexers in telecom central offices deployed FLEX 8000 devices like the EPF8820AQC208-3N for HDLC framing, time-slot interchange, and alarm logic. The 5 V tolerant I/Os interface directly to vintage bus transceivers, while the 152 I/Os handle full E1 (32 time slots) plus overhead without external bus expander logic. The 672 LEs and 1,500 registers provide ample capacity for per-channel state machines, while the -3 speed grade's 7.9 ns multiplexer delay meets 8 kHz frame alignment budgets. In-circuit reconfigurability allowed carriers to deploy field-upgradeable firmware via JTAG without card swap.
おすすめ
PCI Bus Bridge and Glue Logic Consolidation
The EPF8820AQC208-3N's wide 152-I/O count and 8K-gate capacity made it a popular PCI bus bridge and glue-logic consolidator in late-1990s PC peripherals, RAID controllers, and add-in cards. It absorbed address decode, wait-state insertion, bus arbiter, and interrupt steering that previously consumed two to three CPLDs. The FQFP-208 footprint accommodates the 32-bit PCI AD bus plus control and parity signals without multiplexing, and the SRAM configuration supports vendor-specific BIOS updates. The 5 V core matches the PCI 5 V signaling environment, eliminating level shifters.
おすすめ
Educational and Hobbyist Development Platforms
Universities and engineering schools adopted the EPF8820AQC208-3N and its FLEX 8000 siblings for FPGA design courses in the late 1990s and early 2000s because Altera MAX+PLUS II and Quartus toolchains offered free student editions. The 8K-gate capacity exercises Verilog and VHDL design flows without overwhelming students, while the 152 I/Os interface conveniently to breadboard-friendly headers. The 5 V tolerance tolerates typical lab bench power supplies, and the SRAM configuration supports live in-lab re-iteration. Hobbyists today use surplus EPF8820AQC208-3N stock on FPGA retro-computing projects.
おすすめ
Parallel SRAM and FIFO Interface Controllers
The EPF8820AQC208-3N served as a flexible controller between microprocessors and parallel SRAM, FIFOs, and dual-port memories in DSP and image-processing subsystems. The 152 I/Os handle 32-bit data plus 24-bit address and full control without external bus expander logic, and the 672 LEs accommodate address-generation state machines and burst-mode controllers. The 7.9 ns multiplexer delay at the -3 speed grade ensures single-cycle memory access at clock rates up to 80 MHz. The SRAM configuration permits firmware revision without re-spinning the PCB during prototype bring-up.
おすすめ
Aerospace Avionics Legacy Spares
Military and commercial avionics programs built in the late 1990s often standardized on FLEX 8000 devices like the EPF8820AQC208-3N for ARINC 429 bus interfaces, flight-control redundant compute lanes, and display drivers. Despite its obsolete lifecycle status today, it remains on qualified parts lists for sustaining engineering of these long-lifecycle platforms. The 5 V tolerance, wide temperature headroom when derated, and proven reliability in fielded systems make it the only drop-in replacement for legacy flight hardware. Aerospace sustainment programs continue to procure tested lot stock through specialized brokers.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: EPF8820AQC208-3N — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | EPF8820AQC208-3 | EPF8820AQC208-2N | EPF8820AQC208-2 | EPF8820AQC208-4 | EPF8636AQC208-3 | EPF8636AQC208-4N |
|---|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | FQFP-208 (PQFP-208) | FQFP-208 - same | FQFP-208 - same | FQFP-208 - same | FQFP-208 - same | FQFP-208 - same | FQFP-208 - same |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 6,000 | 6,000 |
| Logic Cells (LEs) | 672 | 672 | 672 | 672 | 672 | 432 | 432 |
| User I/Os | 152 | 152 | 152 | 152 | 152 | 152 | 152 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Speed Grade | -3 (95 MHz counter) | -3 (95 MHz counter) | -2 (83 MHz counter) | -2 (83 MHz counter) | -4 (faster than -3) | -3 (95 MHz counter) | -4 (faster than -3) |
| Lead-Free Finish | No (N suffix) | Yes (no N suffix) | No (N suffix) | Yes | Yes | Yes | No (N suffix) |
| Operating Temperature | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C |
主な差別化要因
- Lead-free finish availability for RoHS compliance （vs EPF8820AQC208-3)
- Faster speed grade option in same FQFP-208 footprint （vs EPF8820AQC208-4)
- 50% more logic capacity than the EPF8636 family at the same footprint （vs EPF8636AQC208-3)
設計ノート
The EPF8820AQC208-3N requires a stable 5 V supply on both VCCINT and VCCIO pins. Decouple each VCCINT/VCCIO pin with a 0.1 µF ceramic capacitor placed within 5 mm of the package pin, and add bulk 10-47 µF tantalum or polymer capacitors at the supply entry to the board. During configuration, inrush current can momentarily exceed 500 mA; ensure the regulator has sufficient headroom. Power sequencing between VCCINT and VCCIO is not required, but both rails must reach 90% of nominal within 100 ms of power-up to prevent partial SRAM configuration errors.
Although the 0.42 µm CMOS process is not high-power, sustained configuration clocking at 95 MHz with all 152 I/Os toggling can dissipate 1-1.5 W. The FQFP-208 package has a θJA of approximately 35-40 °C/W on a standard 4-layer PCB, so junction temperature rise is 35-60 °C above ambient. For operation at the high end of the 0-70 °C commercial range, provide copper pours under and around the package and ensure at least 100 CFM airflow if mounted in a sealed enclosure. Forced-air cooling is rarely required but recommended for sustained 95 MHz operation in chassis above 50 °C ambient.
FQFP-208 has 0.5 mm pitch gull-wing leads. Use a 4-layer PCB with continuous GND plane under the device for return-current control and EMI suppression. Route all 152 user I/O signals on inner or outer layers with 50 Ω controlled impedance if any signal exceeds 50 MHz. Keep configuration traces (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0) short and away from switching I/O to avoid false configuration triggers. Provide a JTAG header (TDI/TMS/TCK/TDO plus optional TRST) accessible at the board edge for in-system programming via Altera ByteBlaster or equivalent.
Common pitfalls: (1) Failing to configure the device on every power-up because SRAM configuration is volatile; (2) Driving I/O pins before configuration completes (will cause high-Icc latch-up); (3) Mixing 3.3 V peripherals on a 5 V VCCIO bank (the FLEX 8000 I/Os are 5 V tolerant but not 3.3 V-compliant); (4) Ignoring the -3 speed grade when budgeting timing - the 7.9 ns multiplexer delay must be added to clock-to-output paths; (5) Forgetting to assign unused I/O pins to 'input tri-stated' to minimize power and noise; (6) Using EPC1 (older) configuration devices without verifying compatibility with Quartus programmer output.
コンプライアンス情報
EPF8820AQC208-3N carries the 'N' suffix indicating non-lead-free (leaded) finish per legacy Altera ordering codes; use the EPF8820AQC208-3 (no N) for RoHS-compliant builds. RoHS/REACH/AEC-Q100 status not explicitly listed in verified sources.
