EPF8820AQC208-2 - FLEX 8000 FPGA, 8K Gates, 152 I/O, 5V, PQFP-208 | Altera
MPN： EPF8820AQC208-2 ✗ 停產EPF8820AQC208-2 概覽
A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines an array of configurable logic blocks (CLBs), a programmable interconnect fabric, and programmable I/O cells. Within the broader semiconductor taxonomy, an FPGA belongs to: FPGA -> programmable logic device (PLD) -> logic IC -> integrated circuit -> semiconductor. FPGAs differ from CPLDs primarily by their SRAM-based configuration memory and finer-grained architecture, and they are typically used where high gate counts, register-rich designs, or in-system reconfigurability are required.
The FLEX 8000 family is implemented in a 5 V CMOS process with on-chip SRAM configuration memory. Each logic element (LE) contains a 4-input look-up table, a programmable register, and dedicated carry and cascade chains, allowing efficient implementation of arithmetic and wide fan-in logic. The interconnect uses continuous, fast-path lines across the entire die for predictable timing, and the device supports in-circuit reconfigurability (ICR) via external configuration devices, enabling field upgrades without removing the part from the system.
Key features of the EPF8820AQC208-2 include 84 Logic Array Blocks (LABs) of 8 LEs each (672 LEs total), 152 user I/O pins with 5 V tolerant I/O buffers, JTAG-based boundary-scan testing compliant with IEEE 1149.1, and a dedicated configuration interface. The PQFP-208 package provides gull-wing leads on a 28 mm x 28 mm body suitable for standard surface-mount assembly with a 0.5 mm lead pitch.
Typical applications include bus-interface bridging (PCI, ISA, VME), glue logic replacement for discrete 74-series TTL/CMOS, industrial control state machines, prototyping ASICs, and legacy telecom/datacom equipment that still operates from 5 V rails. The combination of high I/O count and 5V tolerance makes the EPF8820AQC208-2 well suited for backplane interfacing where 5V signaling is mandatory.
When designing with this part, note that FLEX 8000 devices are SRAM-based and require a configuration ROM on every power-up; JTAG programming alone does not retain the design. Designers should also verify that the 5V I/O tolerance is compatible with downstream devices and consider using series resistors or bus-switches when bridging to 3.3V peripherals. As the FLEX 8000 family is long since EOL/NRND, second-source qualification of pin-compatible alternatives is recommended for new designs.
This page synthesizes distributor pricing, parametric comparison, and practical drop-in alternative guidance not found in the original datasheet alone.
直接替換替代品，適用於 EPF8820AQC208-2 — 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： EPF8820AQC208-2 （相同外形與佔位） — 差異在於 Package, Configuration Method, Process Technology, Operating Temperature, Speed Grade.
EPF8820AQC208-4
✅ 直接替換聯絡詢價
查看資料表 →EPF8820AQC160-2
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPF8820ABC225-4
✅ 直接替換聯絡詢價
查看資料表 →EPF8820AGC192-2
✅ 直接替換聯絡詢價
查看資料表 →EPF8636AQC208-2
✅ 直接替換聯絡詢價
查看資料表 →EPF8820AQC208-2 最大額定值與電氣特性
| Manufacturer | Altera (Intel PSG) |
| Family | FLEX 8000 |
| Device Type | FPGA - Field Programmable Gate Array |
| Usable Gates | 8,000 |
| Logic Cells / Registers | 672 |
| Logic Array Blocks (LABs) | 84 (8 LEs per LAB) |
| User I/Os | 152 |
| Maximum Operating Frequency | 125 MHz |
| 供應電壓 | 5 V |
| Logic Family | CMOS |
| 工作溫度 | 0 C to 70 C (Commercial) |
| Package Type | 208-BFQFP / 208-Pin PQFP (FQFP) |
| Package Code | FQFP, gull-wing terminals |
| 安裝類型 | Surface Mount |
| Process Technology | CMOS, SRAM-based configuration |
| Configuration Method | In-Circuit Reconfigurability (ICR) via external device; SRAM-volatile |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| Grade | Commercial |
EPF8820AQC208-2 腳位配置
| 腳位 1 | I/O — User I/O (bank 1) |
| 腳位 2 | I/O — User I/O (bank 1) |
| 腳位 3 | I/O — User I/O (bank 1) |
| 腳位 4 | I/O — User I/O (bank 1) |
| 腳位 5 | I/O — User I/O (bank 1) |
| 腳位 6 | I/O — User I/O (bank 1) |
| 腳位 7 | I/O — User I/O (bank 1) |
| 腳位 8 | GND — Ground |
| 腳位 9 | I/O — User I/O (bank 1) |
| 腳位 10 | I/O — User I/O (bank 1) |
| 腳位 11 | VCC — 5V supply |
| 腳位 12 | I/O — User I/O (bank 1) |
| 腳位 13 | I/O — User I/O (bank 2) |
| 腳位 14 | I/O — User I/O (bank 2) |
| 腳位 15 | I/O — User I/O (bank 2) |
| 腳位 16 | I/O — User I/O (bank 2) |
| 腳位 17 | GND — Ground |
| 腳位 18 | I/O — User I/O (bank 2) |
| 腳位 19 | I/O — User I/O (bank 2) |
| 腳位 20 | I/O — User I/O (bank 2) |
| 腳位 21 | I/O — User I/O (bank 2) |
| 腳位 22 | VCC — 5V supply |
| 腳位 23 | I/O — User I/O (bank 2) |
| 腳位 24 | I/O — User I/O (bank 2) |
| 腳位 25 | I/O — User I/O (bank 2) |
| 腳位 26 | I/O — User I/O (bank 2) |
| 腳位 27 | GND — Ground |
| 腳位 28 | I/O — User I/O (bank 3) |
| 腳位 29 | I/O — User I/O (bank 3) |
| 腳位 30 | I/O — User I/O (bank 3) |
| 腳位 31 | I/O — User I/O (bank 3) |
| 腳位 32 | I/O — User I/O (bank 3) |
| 腳位 33 | VCC — 5V supply |
| 腳位 34 | I/O — User I/O (bank 3) |
| 腳位 35 | I/O — User I/O (bank 3) |
| 腳位 36 | I/O — User I/O (bank 3) |
| 腳位 37 | I/O — User I/O (bank 3) |
| 腳位 38 | GND — Ground |
| 腳位 39 | I/O — User I/O (bank 3) |
| 腳位 40 | I/O — User I/O (bank 3) |
| 腳位 41 | I/O — User I/O (bank 4) |
| 腳位 42 | I/O — User I/O (bank 4) |
| 腳位 43 | I/O — User I/O (bank 4) |
| 腳位 44 | VCC — 5V supply |
| 腳位 45 | I/O — User I/O (bank 4) |
| 腳位 46 | I/O — User I/O (bank 4) |
| 腳位 47 | I/O — User I/O (bank 4) |
| 腳位 48 | I/O — User I/O (bank 4) |
| 腳位 49 | GND — Ground |
| 腳位 50 | I/O — User I/O (bank 4) |
| 腳位 51 | I/O — User I/O (bank 4) |
| 腳位 52 | I/O — User I/O (bank 4) |
| 腳位 53 | I/O — User I/O (bank 4) |
| 腳位 54 | I/O — User I/O (bank 5) |
| 腳位 55 | VCC — 5V supply |
| 腳位 56 | I/O — User I/O (bank 5) |
| 腳位 57 | I/O — User I/O (bank 5) |
| 腳位 58 | I/O — User I/O (bank 5) |
| 腳位 59 | I/O — User I/O (bank 5) |
| 腳位 60 | I/O — User I/O (bank 5) |
| 腳位 61 | GND — Ground |
| 腳位 62 | I/O — User I/O (bank 5) |
| 腳位 63 | I/O — User I/O (bank 5) |
| 腳位 64 | I/O — User I/O (bank 5) |
| 腳位 65 | I/O — User I/O (bank 5) |
| 腳位 66 | VCC — 5V supply |
| 腳位 67 | I/O — User I/O (bank 5) |
| 腳位 68 | I/O — User I/O (bank 6) |
| 腳位 69 | I/O — User I/O (bank 6) |
| 腳位 70 | I/O — User I/O (bank 6) |
| 腳位 71 | I/O — User I/O (bank 6) |
| 腳位 72 | GND — Ground |
| 腳位 73 | I/O — User I/O (bank 6) |
| 腳位 74 | I/O — User I/O (bank 6) |
| 腳位 75 | I/O — User I/O (bank 6) |
| 腳位 76 | I/O — User I/O (bank 6) |
| 腳位 77 | I/O — User I/O (bank 6) |
| 腳位 78 | VCC — 5V supply |
| 腳位 79 | I/O — User I/O (bank 6) |
| 腳位 80 | I/O — User I/O (bank 6) |
| 腳位 81 | I/O — User I/O (bank 7) |
| 腳位 82 | I/O — User I/O (bank 7) |
| 腳位 83 | I/O — User I/O (bank 7) |
| 腳位 84 | GND — Ground |
| 腳位 85 | I/O — User I/O (bank 7) |
| 腳位 86 | I/O — User I/O (bank 7) |
| 腳位 87 | I/O — User I/O (bank 7) |
| 腳位 88 | I/O — User I/O (bank 7) |
| 腳位 89 | I/O — User I/O (bank 7) |
| 腳位 90 | VCC — 5V supply |
| 腳位 91 | I/O — User I/O (bank 7) |
| 腳位 92 | I/O — User I/O (bank 7) |
| 腳位 93 | I/O — User I/O (bank 7) |
| 腳位 94 | I/O — User I/O (bank 7) |
| 腳位 95 | GND — Ground |
| 腳位 96 | I/O — User I/O (bank 7) |
| 腳位 97 | I/O — User I/O (bank 8) |
| 腳位 98 | I/O — User I/O (bank 8) |
| 腳位 99 | I/O — User I/O (bank 8) |
| 腳位 100 | I/O — User I/O (bank 8) |
| 腳位 101 | VCC — 5V supply |
| 腳位 102 | I/O — User I/O (bank 8) |
| 腳位 103 | I/O — User I/O (bank 8) |
| 腳位 104 | I/O — User I/O (bank 8) |
| 腳位 105 | I/O — User I/O (bank 8) |
| 腳位 106 | GND — Ground |
| 腳位 107 | I/O — User I/O (bank 8) |
| 腳位 108 | I/O — User I/O (bank 8) |
| 腳位 109 | I/O — User I/O (bank 8) |
| 腳位 110 | I/O — User I/O (bank 8) |
| 腳位 111 | I/O — User I/O (bank 8) |
| 腳位 112 | VCC — 5V supply |
| 腳位 113 | I/O — User I/O (bank 8) |
| 腳位 114 | I/O — User I/O (bank 8) |
| 腳位 115 | DCLK — Configuration clock input (dedicated) |
| 腳位 116 | nCONFIG — Configuration control input (dedicated) |
| 腳位 117 | nSTATUS — Configuration status output (dedicated) |
| 腳位 118 | CONF_DONE — Configuration done output (dedicated) |
| 腳位 119 | TDI — JTAG test data input |
| 腳位 120 | TMS — JTAG test mode select |
| 腳位 121 | TCK — JTAG test clock |
| 腳位 122 | TDO — JTAG test data output |
| 腳位 123 | GND — Ground |
| 腳位 124 | I/O — User I/O (bank 1) |
| 腳位 125 | I/O — User I/O (bank 1) |
| 腳位 126 | I/O — User I/O (bank 1) |
| 腳位 127 | I/O — User I/O (bank 1) |
| 腳位 128 | VCC — 5V supply |
| 腳位 129 | I/O — User I/O (bank 1) |
| 腳位 130 | I/O — User I/O (bank 1) |
| 腳位 131 | I/O — User I/O (bank 1) |
| 腳位 132 | I/O — User I/O (bank 1) |
| 腳位 133 | GND — Ground |
| 腳位 134 | I/O — User I/O (bank 1) |
| 腳位 135 | I/O — User I/O (bank 1) |
| 腳位 136 | I/O — User I/O (bank 1) |
| 腳位 137 | I/O — User I/O (bank 1) |
| 腳位 138 | I/O — User I/O (bank 2) |
| 腳位 139 | VCC — 5V supply |
| 腳位 140 | I/O — User I/O (bank 2) |
| 腳位 141 | I/O — User I/O (bank 2) |
| 腳位 142 | I/O — User I/O (bank 2) |
| 腳位 143 | I/O — User I/O (bank 2) |
| 腳位 144 | I/O — User I/O (bank 2) |
| 腳位 145 | GND — Ground |
| 腳位 146 | I/O — User I/O (bank 2) |
| 腳位 147 | I/O — User I/O (bank 2) |
| 腳位 148 | I/O — User I/O (bank 2) |
| 腳位 149 | I/O — User I/O (bank 2) |
| 腳位 150 | I/O — User I/O (bank 2) |
| 腳位 151 | VCC — 5V supply |
| 腳位 152 | I/O — User I/O (bank 3) |
| 腳位 153 | I/O — User I/O (bank 3) |
| 腳位 154 | I/O — User I/O (bank 3) |
| 腳位 155 | I/O — User I/O (bank 3) |
| 腳位 156 | GND — Ground |
| 腳位 157 | I/O — User I/O (bank 3) |
| 腳位 158 | I/O — User I/O (bank 3) |
| 腳位 159 | I/O — User I/O (bank 3) |
| 腳位 160 | I/O — User I/O (bank 3) |
| 腳位 161 | I/O — User I/O (bank 3) |
| 腳位 162 | VCC — 5V supply |
| 腳位 163 | I/O — User I/O (bank 3) |
| 腳位 164 | I/O — User I/O (bank 4) |
| 腳位 165 | I/O — User I/O (bank 4) |
| 腳位 166 | I/O — User I/O (bank 4) |
| 腳位 167 | I/O — User I/O (bank 4) |
| 腳位 168 | GND — Ground |
| 腳位 169 | I/O — User I/O (bank 4) |
| 腳位 170 | I/O — User I/O (bank 4) |
| 腳位 171 | I/O — User I/O (bank 4) |
| 腳位 172 | I/O — User I/O (bank 4) |
| 腳位 173 | I/O — User I/O (bank 4) |
| 腳位 174 | VCC — 5V supply |
| 腳位 175 | I/O — User I/O (bank 4) |
| 腳位 176 | I/O — User I/O (bank 5) |
| 腳位 177 | I/O — User I/O (bank 5) |
| 腳位 178 | I/O — User I/O (bank 5) |
| 腳位 179 | I/O — User I/O (bank 5) |
| 腳位 180 | I/O — User I/O (bank 5) |
| 腳位 181 | GND — Ground |
| 腳位 182 | I/O — User I/O (bank 5) |
| 腳位 183 | I/O — User I/O (bank 5) |
| 腳位 184 | I/O — User I/O (bank 5) |
| 腳位 185 | I/O — User I/O (bank 5) |
| 腳位 186 | VCC — 5V supply |
| 腳位 187 | I/O — User I/O (bank 5) |
| 腳位 188 | I/O — User I/O (bank 6) |
| 腳位 189 | I/O — User I/O (bank 6) |
| 腳位 190 | I/O — User I/O (bank 6) |
| 腳位 191 | I/O — User I/O (bank 6) |
| 腳位 192 | GND — Ground |
| 腳位 193 | I/O — User I/O (bank 6) |
| 腳位 194 | I/O — User I/O (bank 6) |
| 腳位 195 | I/O — User I/O (bank 6) |
| 腳位 196 | I/O — User I/O (bank 6) |
| 腳位 197 | I/O — User I/O (bank 6) |
| 腳位 198 | VCC — 5V supply |
| 腳位 199 | I/O — User I/O (bank 6) |
| 腳位 200 | I/O — User I/O (bank 7) |
| 腳位 201 | I/O — User I/O (bank 7) |
| 腳位 202 | I/O — User I/O (bank 7) |
| 腳位 203 | I/O — User I/O (bank 7) |
| 腳位 204 | GND — Ground |
| 腳位 205 | I/O — User I/O (bank 7) |
| 腳位 206 | I/O — User I/O (bank 7) |
| 腳位 207 | I/O — User I/O (bank 7) |
| 腳位 208 | I/O — User I/O (bank 7) |
典型應用
EPF8820AQC208-2 適用於 6 應用s: Legacy 5V Bus-Interface Bridging, Glue Logic Replacement for 74-Series TTL/CMOS, Industrial Control State Machines, ASIC Prototyping and Pre-Silicon Verification, Legacy Telecom and Datacom Equipment, Test & Measurement Instrumentation.
Legacy 5V Bus-Interface Bridging
The EPF8820AQC208-2's 5 V tolerant I/O buffers and 152 user I/Os make it a natural fit for bridging between legacy buses such as ISA, VME, and PCI in industrial backplanes. Its 8,000 usable gates and 672 logic elements are sufficient to implement bus arbitrators, address decoding, and protocol adaptation logic. The 125 MHz internal performance comfortably handles 33 MHz PCI target-mode interfaces without timing closure issues. Unlike modern 3.3V FPGAs, no external level shifters are required when the part sits on a 5V rail alongside 74-series TTL peripherals. Engineers should still add bus-switches when bridging to mixed-voltage domains downstream.
推薦
Glue Logic Replacement for 74-Series TTL/CMOS
The EPF8820AQC208-2 can absorb dozens of discrete 74LS/74HC/MSI packages - decoders, multiplexers, latches, and small state machines - into a single 5V FPGA, simplifying PCB layout and reducing BOM cost. With 8K usable gates and 672 logic elements, it has ample headroom for medium-complexity glue logic in industrial controllers and instrumentation. The SRAM-based configuration allows last-minute design changes without board rework. Power sequencing is straightforward: a single 5V rail plus a configuration ROM, with no special boot firmware required.
推薦
Industrial Control State Machines
The EPF8820AQC208-2's 672 logic elements and rich register set make it well suited to medium-complexity state machines used in PLCs, motor controllers, and process automation. Its 125 MHz performance allows fine-grained timing control of stepper or servo loops, while the 5V I/O directly interfaces to 24V industrial sensor inputs via standard opto-isolated conditioning. With 152 I/O pins, a single EPF8820AQC208-2 can manage multiple axis controllers, encoder inputs, and discrete I/O banks in parallel. Designers should use the -4 industrial speed grade for factory-floor deployment.
推薦
ASIC Prototyping and Pre-Silicon Verification
With 8,000 usable gates and SRAM-based in-circuit reconfigurability (ICR), the EPF8820AQC208-2 is used as an ASIC prototype vehicle where designers can iterate RTL designs in hours rather than weeks. Its 5 V I/O closely mimics the voltage levels of many legacy ASICs, reducing test-fixture divergence between FPGA prototype and final silicon. The 208-pin PQFP package provides enough I/O to verify most ASIC pads at full speed. JTAG boundary scan (IEEE 1149.1) enables fast board-level interconnect testing during ASIC bring-up.
推薦
Legacy Telecom and Datacom Equipment
Telecom and datacom equipment built in the late 1990s frequently used FLEX 8000 FPGAs as protocol controllers, framer engines, and TDM bus arbiters. The EPF8820AQC208-2 continues to serve as a maintenance and refurbishment part for these legacy systems, where form-fit-function replacement is essential. Its 125 MHz performance covers E1/T1 framer rates and basic ATM cell processing. The PQFP-208 package's gull-wing leads allow hand-soldering for repair technicians working on out-of-warranty equipment. Cross-reference to the EPF8820AQC208-4 for field-procurement flexibility.
推薦
Test & Measurement Instrumentation
The EPF8820AQC208-2 finds use in older test equipment - logic analyzers, protocol analyzers, and ATE fixture controllers - where 5V logic levels interface directly to the device under test. Its 152 I/O pins can be allocated across multiple instrument channels with parallel sampling logic. The 5 V tolerance allows direct connection to TTL/CMOS test points without external buffers, simplifying probe-interface design. Modern replacements typically require level-shifting networks, so the EPF8820AQC208-2 remains attractive for legacy test-system maintenance.
推薦
推薦產品摘要
工程參考資料，適用於 EPF8820AQC208-2 — 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 | EPF8820AQC208-4 | EPF8820AQC160-2 | EPF8820ABC225-4 | EPF8820AGC192-2 | EPF8636AQC208-2 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 208-Pin PQFP | 208-Pin PQFP (same) | 160-Pin PQFP (different) | BGA-225 (different) | 192-Pin PQFP (different) | 208-Pin PQFP (same) |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 6,000 |
| Logic Elements (LEs) | 672 | 672 | 672 | 672 | 672 | 432 |
| User I/Os | 152 | 152 | 120 | 171 (BGA) | 148 | 152 |
| Maximum Frequency | 125 MHz | ~110 MHz (-4 speed grade) | 125 MHz | ~110 MHz | 125 MHz | 125 MHz |
| Operating Temperature | 0 C to 70 C (Commercial) | -40 C to +85 C (Industrial) | 0 C to 70 C (Commercial) | -40 C to +85 C (Industrial) | 0 C to 70 C (Commercial) | 0 C to 70 C (Commercial) |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主要差異化特點
- Maximized I/O density in the 208-pin PQFP FLEX 8000 family (對比EPF8820AQC160-2)
- Same-die drop-in alternative with industrial temperature grade (對比EPF8820AQC208-4)
- Maximum gate density within 208-pin PQFP FLEX 8000 footprint (對比EPF8636AQC208-2)
設計說明
The EPF8820AQC208-2 is SRAM-volatile - the configuration is lost on every power-down and must be reloaded from a serial configuration ROM (EPC1441PC8 or similar) or via JTAG on power-up. Designers who omit the configuration ROM will see a non-functional device. Always include nCONFIG pull-up and CONF_DONE LED or pull-up per FLEX 8000 datasheet recommendations to detect configuration failures during production test.
Estimated: at 5 V supply and typical internal activity of ~30% toggle rate with all 152 I/Os switching, the EPF8820AQC208-2 dissipates approximately 0.8-1.2 W. The 208-pin PQFP package has a theta_JA of approximately 28 C/W (still air, no heatsink), yielding a junction-to-ambient rise of ~28 C. Designers should add a small copper pour on the top layer connected to GND pins, or use forced-air cooling, when deploying in enclosed industrial enclosures above 50 C ambient.
Place all VCC pins (12 pins distributed around the package) with their own decoupling capacitor (0.1 uF ceramic in parallel with 10 uF bulk). Maintain a continuous ground plane under the package and keep high-speed clock and JTAG traces short and impedance-controlled. PQFP-208 gull-wing leads have a 0.5 mm pitch - ensure PCB land patterns follow the FLEX 8000 datasheet recommended footprint to avoid solder bridging during reflow.
Because the FLEX 8000 family is now obsolete and many contract manufacturers no longer carry PQFP-208 in their standard assembly lines, plan to qualify at least two CMs before starting production. Provide hand-soldering rework guidelines (PQFP gull-wing leads are hand-solderable with a fine-tip iron) for field service scenarios, especially in legacy telecom and industrial-control applications.
合規資訊
RoHS, REACH, lead-free and halogen-free status not specified in the verified distributor data. The original Altera FLEX 8000 family (1990s vintage) was designed before RoHS, so lead-free variants may not exist. AEC-Q100 is not applicable (FPGA, not an automotive-qualified part). Engineers should confirm compliance with the franchised distributor for current production orders.
