EPF8820AQC208-2 - FLEX 8000 FPGA, 8K Gates, 152 I/O, 5V, PQFP-208 | Altera
MPN: EPF8820AQC208-2 ✗ Cuối đờiEPF8820AQC208-2 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho EPF8820AQC208-2 — 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 EPF8820AQC208-2 (cùng hình factor và footprint) — khác nhau ở Package, Configuration Method, Process Technology, Operating Temperature, Speed Grade.
EPF8820AQC208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC160-2
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPF8820ABC225-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AGC192-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8636AQC208-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC208-2 Tỷ lệ tối đa & tính chất điện
| 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 |
| Điện áp cung cấp | 5 V |
| Logic Family | CMOS |
| Nhiệt độ hoạt động | 0 C to 70 C (Commercial) |
| Package Type | 208-BFQFP / 208-Pin PQFP (FQFP) |
| Package Code | FQFP, gull-wing terminals |
| Kiểu lắp đặt | 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 |
Cấu hình chân EPF8820AQC208-2
| Chân 1 | I/O — User I/O (bank 1) |
| Chân 2 | I/O — User I/O (bank 1) |
| Chân 3 | I/O — User I/O (bank 1) |
| Chân 4 | I/O — User I/O (bank 1) |
| Chân 5 | I/O — User I/O (bank 1) |
| Chân 6 | I/O — User I/O (bank 1) |
| Chân 7 | I/O — User I/O (bank 1) |
| Chân 8 | GND — Ground |
| Chân 9 | I/O — User I/O (bank 1) |
| Chân 10 | I/O — User I/O (bank 1) |
| Chân 11 | VCC — 5V supply |
| Chân 12 | I/O — User I/O (bank 1) |
| Chân 13 | I/O — User I/O (bank 2) |
| Chân 14 | I/O — User I/O (bank 2) |
| Chân 15 | I/O — User I/O (bank 2) |
| Chân 16 | I/O — User I/O (bank 2) |
| Chân 17 | GND — Ground |
| Chân 18 | I/O — User I/O (bank 2) |
| Chân 19 | I/O — User I/O (bank 2) |
| Chân 20 | I/O — User I/O (bank 2) |
| Chân 21 | I/O — User I/O (bank 2) |
| Chân 22 | VCC — 5V supply |
| Chân 23 | I/O — User I/O (bank 2) |
| Chân 24 | I/O — User I/O (bank 2) |
| Chân 25 | I/O — User I/O (bank 2) |
| Chân 26 | I/O — User I/O (bank 2) |
| Chân 27 | GND — Ground |
| Chân 28 | I/O — User I/O (bank 3) |
| Chân 29 | I/O — User I/O (bank 3) |
| Chân 30 | I/O — User I/O (bank 3) |
| Chân 31 | I/O — User I/O (bank 3) |
| Chân 32 | I/O — User I/O (bank 3) |
| Chân 33 | VCC — 5V supply |
| Chân 34 | I/O — User I/O (bank 3) |
| Chân 35 | I/O — User I/O (bank 3) |
| Chân 36 | I/O — User I/O (bank 3) |
| Chân 37 | I/O — User I/O (bank 3) |
| Chân 38 | GND — Ground |
| Chân 39 | I/O — User I/O (bank 3) |
| Chân 40 | I/O — User I/O (bank 3) |
| Chân 41 | I/O — User I/O (bank 4) |
| Chân 42 | I/O — User I/O (bank 4) |
| Chân 43 | I/O — User I/O (bank 4) |
| Chân 44 | VCC — 5V supply |
| Chân 45 | I/O — User I/O (bank 4) |
| Chân 46 | I/O — User I/O (bank 4) |
| Chân 47 | I/O — User I/O (bank 4) |
| Chân 48 | I/O — User I/O (bank 4) |
| Chân 49 | GND — Ground |
| Chân 50 | I/O — User I/O (bank 4) |
| Chân 51 | I/O — User I/O (bank 4) |
| Chân 52 | I/O — User I/O (bank 4) |
| Chân 53 | I/O — User I/O (bank 4) |
| Chân 54 | I/O — User I/O (bank 5) |
| Chân 55 | VCC — 5V supply |
| Chân 56 | I/O — User I/O (bank 5) |
| Chân 57 | I/O — User I/O (bank 5) |
| Chân 58 | I/O — User I/O (bank 5) |
| Chân 59 | I/O — User I/O (bank 5) |
| Chân 60 | I/O — User I/O (bank 5) |
| Chân 61 | GND — Ground |
| Chân 62 | I/O — User I/O (bank 5) |
| Chân 63 | I/O — User I/O (bank 5) |
| Chân 64 | I/O — User I/O (bank 5) |
| Chân 65 | I/O — User I/O (bank 5) |
| Chân 66 | VCC — 5V supply |
| Chân 67 | I/O — User I/O (bank 5) |
| Chân 68 | I/O — User I/O (bank 6) |
| Chân 69 | I/O — User I/O (bank 6) |
| Chân 70 | I/O — User I/O (bank 6) |
| Chân 71 | I/O — User I/O (bank 6) |
| Chân 72 | GND — Ground |
| Chân 73 | I/O — User I/O (bank 6) |
| Chân 74 | I/O — User I/O (bank 6) |
| Chân 75 | I/O — User I/O (bank 6) |
| Chân 76 | I/O — User I/O (bank 6) |
| Chân 77 | I/O — User I/O (bank 6) |
| Chân 78 | VCC — 5V supply |
| Chân 79 | I/O — User I/O (bank 6) |
| Chân 80 | I/O — User I/O (bank 6) |
| Chân 81 | I/O — User I/O (bank 7) |
| Chân 82 | I/O — User I/O (bank 7) |
| Chân 83 | I/O — User I/O (bank 7) |
| Chân 84 | GND — Ground |
| Chân 85 | I/O — User I/O (bank 7) |
| Chân 86 | I/O — User I/O (bank 7) |
| Chân 87 | I/O — User I/O (bank 7) |
| Chân 88 | I/O — User I/O (bank 7) |
| Chân 89 | I/O — User I/O (bank 7) |
| Chân 90 | VCC — 5V supply |
| Chân 91 | I/O — User I/O (bank 7) |
| Chân 92 | I/O — User I/O (bank 7) |
| Chân 93 | I/O — User I/O (bank 7) |
| Chân 94 | I/O — User I/O (bank 7) |
| Chân 95 | GND — Ground |
| Chân 96 | I/O — User I/O (bank 7) |
| Chân 97 | I/O — User I/O (bank 8) |
| Chân 98 | I/O — User I/O (bank 8) |
| Chân 99 | I/O — User I/O (bank 8) |
| Chân 100 | I/O — User I/O (bank 8) |
| Chân 101 | VCC — 5V supply |
| Chân 102 | I/O — User I/O (bank 8) |
| Chân 103 | I/O — User I/O (bank 8) |
| Chân 104 | I/O — User I/O (bank 8) |
| Chân 105 | I/O — User I/O (bank 8) |
| Chân 106 | GND — Ground |
| Chân 107 | I/O — User I/O (bank 8) |
| Chân 108 | I/O — User I/O (bank 8) |
| Chân 109 | I/O — User I/O (bank 8) |
| Chân 110 | I/O — User I/O (bank 8) |
| Chân 111 | I/O — User I/O (bank 8) |
| Chân 112 | VCC — 5V supply |
| Chân 113 | I/O — User I/O (bank 8) |
| Chân 114 | I/O — User I/O (bank 8) |
| Chân 115 | DCLK — Configuration clock input (dedicated) |
| Chân 116 | nCONFIG — Configuration control input (dedicated) |
| Chân 117 | nSTATUS — Configuration status output (dedicated) |
| Chân 118 | CONF_DONE — Configuration done output (dedicated) |
| Chân 119 | TDI — JTAG test data input |
| Chân 120 | TMS — JTAG test mode select |
| Chân 121 | TCK — JTAG test clock |
| Chân 122 | TDO — JTAG test data output |
| Chân 123 | GND — Ground |
| Chân 124 | I/O — User I/O (bank 1) |
| Chân 125 | I/O — User I/O (bank 1) |
| Chân 126 | I/O — User I/O (bank 1) |
| Chân 127 | I/O — User I/O (bank 1) |
| Chân 128 | VCC — 5V supply |
| Chân 129 | I/O — User I/O (bank 1) |
| Chân 130 | I/O — User I/O (bank 1) |
| Chân 131 | I/O — User I/O (bank 1) |
| Chân 132 | I/O — User I/O (bank 1) |
| Chân 133 | GND — Ground |
| Chân 134 | I/O — User I/O (bank 1) |
| Chân 135 | I/O — User I/O (bank 1) |
| Chân 136 | I/O — User I/O (bank 1) |
| Chân 137 | I/O — User I/O (bank 1) |
| Chân 138 | I/O — User I/O (bank 2) |
| Chân 139 | VCC — 5V supply |
| Chân 140 | I/O — User I/O (bank 2) |
| Chân 141 | I/O — User I/O (bank 2) |
| Chân 142 | I/O — User I/O (bank 2) |
| Chân 143 | I/O — User I/O (bank 2) |
| Chân 144 | I/O — User I/O (bank 2) |
| Chân 145 | GND — Ground |
| Chân 146 | I/O — User I/O (bank 2) |
| Chân 147 | I/O — User I/O (bank 2) |
| Chân 148 | I/O — User I/O (bank 2) |
| Chân 149 | I/O — User I/O (bank 2) |
| Chân 150 | I/O — User I/O (bank 2) |
| Chân 151 | VCC — 5V supply |
| Chân 152 | I/O — User I/O (bank 3) |
| Chân 153 | I/O — User I/O (bank 3) |
| Chân 154 | I/O — User I/O (bank 3) |
| Chân 155 | I/O — User I/O (bank 3) |
| Chân 156 | GND — Ground |
| Chân 157 | I/O — User I/O (bank 3) |
| Chân 158 | I/O — User I/O (bank 3) |
| Chân 159 | I/O — User I/O (bank 3) |
| Chân 160 | I/O — User I/O (bank 3) |
| Chân 161 | I/O — User I/O (bank 3) |
| Chân 162 | VCC — 5V supply |
| Chân 163 | I/O — User I/O (bank 3) |
| Chân 164 | I/O — User I/O (bank 4) |
| Chân 165 | I/O — User I/O (bank 4) |
| Chân 166 | I/O — User I/O (bank 4) |
| Chân 167 | I/O — User I/O (bank 4) |
| Chân 168 | GND — Ground |
| Chân 169 | I/O — User I/O (bank 4) |
| Chân 170 | I/O — User I/O (bank 4) |
| Chân 171 | I/O — User I/O (bank 4) |
| Chân 172 | I/O — User I/O (bank 4) |
| Chân 173 | I/O — User I/O (bank 4) |
| Chân 174 | VCC — 5V supply |
| Chân 175 | I/O — User I/O (bank 4) |
| Chân 176 | I/O — User I/O (bank 5) |
| Chân 177 | I/O — User I/O (bank 5) |
| Chân 178 | I/O — User I/O (bank 5) |
| Chân 179 | I/O — User I/O (bank 5) |
| Chân 180 | I/O — User I/O (bank 5) |
| Chân 181 | GND — Ground |
| Chân 182 | I/O — User I/O (bank 5) |
| Chân 183 | I/O — User I/O (bank 5) |
| Chân 184 | I/O — User I/O (bank 5) |
| Chân 185 | I/O — User I/O (bank 5) |
| Chân 186 | VCC — 5V supply |
| Chân 187 | I/O — User I/O (bank 5) |
| Chân 188 | I/O — User I/O (bank 6) |
| Chân 189 | I/O — User I/O (bank 6) |
| Chân 190 | I/O — User I/O (bank 6) |
| Chân 191 | I/O — User I/O (bank 6) |
| Chân 192 | GND — Ground |
| Chân 193 | I/O — User I/O (bank 6) |
| Chân 194 | I/O — User I/O (bank 6) |
| Chân 195 | I/O — User I/O (bank 6) |
| Chân 196 | I/O — User I/O (bank 6) |
| Chân 197 | I/O — User I/O (bank 6) |
| Chân 198 | VCC — 5V supply |
| Chân 199 | I/O — User I/O (bank 6) |
| Chân 200 | I/O — User I/O (bank 7) |
| Chân 201 | I/O — User I/O (bank 7) |
| Chân 202 | I/O — User I/O (bank 7) |
| Chân 203 | I/O — User I/O (bank 7) |
| Chân 204 | GND — Ground |
| Chân 205 | I/O — User I/O (bank 7) |
| Chân 206 | I/O — User I/O (bank 7) |
| Chân 207 | I/O — User I/O (bank 7) |
| Chân 208 | I/O — User I/O (bank 7) |
Ứng dụng tiêu biểu
EPF8820AQC208-2 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8820AQC208-2 — 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 | 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 |
Bảo phân biệt quan trọng
- Maximized I/O density in the 208-pin PQFP FLEX 8000 family (vsEPF8820AQC160-2)
- Same-die drop-in alternative with industrial temperature grade (vsEPF8820AQC208-4)
- Maximum gate density within 208-pin PQFP FLEX 8000 footprint (vsEPF8636AQC208-2)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
