EPF8820AQC208-3 - FLEX 8000 FPGA, 672 LEs, 208-PQFP | Altera
MPN: EPF8820AQC208-3 ✗ Cuối đờiEPF8820AQC208-3 Tóm tắt
A Field Programmable Gate Array (FPGA) is a semiconductor IC built around an array of configurable logic blocks (CLBs/LABs) connected by programmable interconnect. FPGAs belong to the broader category of programmable logic devices (PLDs), which sit between fixed-function ASICs and discrete logic in the design hierarchy. Unlike gate arrays or standard-cell ASICs, FPGAs are reprogrammed in-circuit, accelerating prototyping and reducing non-recurring engineering (NRE) cost.
The FLEX 8000 architecture combines a fine-grained logic fabric with dedicated FastTrack interconnect and a continuous SRAM configuration memory. Each LAB contains 8 logic elements (LEs) and local interconnect, while FastTrack rows and columns provide predictable, tpd-independent delays across the device. The EPF8820AQC208-3 also features built-in JTAG (IEEE 1149.1) boundary-scan support and in-circuit reconfigurability (ICR) via external EPROM (EPC1, EPC1064, EPC1213, EPC1441) or a system controller.
Typical applications include glue-logic replacement, peripheral bus bridging, custom state-machine controllers, telecom interface glue, and industrial control front-ends. The 152 available I/Os at 5 V tolerance (commercial grade 0C to 70C) make it well suited to legacy TTL/CMOS bus interfaces. The device is also commonly deployed as a hardware accelerator for DSP pre/post-processing in cost-sensitive systems where modern FPGAs are over-spec.
When designing with this part, note that the EPF8820AQC208-3 is marked Obsolete/EOL per the latest distributor listings; only remaining stock and refurbished supply are available. Designers should validate long-term availability for new production and consider modern Cyclone or MAX series as functionally equivalent drop-in alternatives where possible.
This page synthesizes distributor pricing, pin-to-pin compatible alternatives from the Altera FLEX 8000 family, and design notes not found on the original Altera datasheet, including context on SRAM configuration and JTAG testing for legacy designs.
Bộ thay thế dễ dàng lắp đặt cho EPF8820AQC208-3 — 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 EPF8820AQC208-3 (cùng hình factor và footprint) — khác nhau ở Package, Process Technology, Operating Temperature, Configuration Method, Usable Gates.
EPF8820AQC208-2N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC208-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC160-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC160-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC160-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF81188AQC208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC208-3 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Device Type | FPGA (Field Programmable Gate Array) |
| Logic Elements (LEs) | 672 |
| Usable Gates | 8,000 |
| Logic Array Blocks (LABs) | 84 |
| User I/Os | 152 |
| Supply Voltage (VCC) | 4.75 V to 5.25 V (5 V nominal) |
| Nhiệt độ hoạt động | 0 C to 70 C (Commercial) |
| Hộp | 208-pin PQFP (Plastic Quad Flat Pack), 28 x 28 mm |
| Kiểu lắp đặt | Surface Mount (Gull-Wing) |
| Process Technology | CMOS SRAM |
| Configuration Method | Serial or parallel EPROM (EPC1, EPC1064, EPC1213, EPC1441), system controller |
| Boundary Scan | JTAG IEEE 1149.1 |
| In-Circuit Reconfigurability | Yes (ICR) |
| Speed Grade | -3 |
| Trạng thái vòng đời | Obsolete (EOL) |
Cấu hình chân EPF8820AQC208-3
| Chân 1 | I/O — User I/O pin (bank A) |
| Chân 2 | I/O — User I/O pin (bank A) |
| Chân 3 | I/O — User I/O pin (bank A) |
| Chân 4 | I/O — User I/O pin (bank A) |
| Chân 5 | I/O — User I/O pin (bank A) |
| Chân 6 | I/O — User I/O pin (bank A) |
| Chân 7 | I/O — User I/O pin (bank A) |
| Chân 8 | I/O — User I/O pin (bank A) |
| Chân 9 | I/O — User I/O pin (bank A) |
| Chân 10 | I/O — User I/O pin (bank A) |
| Chân 11 | I/O — User I/O pin (bank A) |
| Chân 12 | I/O — User I/O pin (bank A) |
| Chân 13 | I/O — User I/O pin (bank A) |
| Chân 14 | I/O — User I/O pin (bank A) |
| Chân 15 | I/O — User I/O pin (bank A) |
| Chân 16 | VCC — 5V supply |
| Chân 17 | GND — Ground |
| Chân 18 | I/O — User I/O pin (bank B) |
| Chân 19 | I/O — User I/O pin (bank B) |
| Chân 20 | I/O — User I/O pin (bank B) |
| Chân 21 | I/O — User I/O pin (bank B) |
| Chân 22 | I/O — User I/O pin (bank B) |
| Chân 23 | I/O — User I/O pin (bank B) |
| Chân 24 | I/O — User I/O pin (bank B) |
| Chân 25 | I/O — User I/O pin (bank B) |
| Chân 26 | I/O — User I/O pin (bank B) |
| Chân 27 | I/O — User I/O pin (bank B) |
| Chân 28 | I/O — User I/O pin (bank B) |
| Chân 29 | I/O — User I/O pin (bank B) |
| Chân 30 | I/O — User I/O pin (bank B) |
| Chân 31 | I/O — User I/O pin (bank B) |
| Chân 32 | I/O — User I/O pin (bank B) |
| Chân 33 | VCC — 5V supply |
| Chân 34 | GND — Ground |
| Chân 35 | I/O — User I/O pin (bank C) |
| Chân 36 | I/O — User I/O pin (bank C) |
| Chân 37 | I/O — User I/O pin (bank C) |
| Chân 38 | I/O — User I/O pin (bank C) |
| Chân 39 | I/O — User I/O pin (bank C) |
| Chân 40 | I/O — User I/O pin (bank C) |
| Chân 41 | I/O — User I/O pin (bank C) |
| Chân 42 | I/O — User I/O pin (bank C) |
| Chân 43 | I/O — User I/O pin (bank C) |
| Chân 44 | I/O — User I/O pin (bank C) |
| Chân 45 | I/O — User I/O pin (bank C) |
| Chân 46 | I/O — User I/O pin (bank C) |
| Chân 47 | I/O — User I/O pin (bank C) |
| Chân 48 | I/O — User I/O pin (bank C) |
| Chân 49 | I/O — User I/O pin (bank C) |
| Chân 50 | VCC — 5V supply |
| Chân 51 | GND — Ground |
| Chân 52 | I/O — User I/O pin (bank D) |
| Chân 53 | I/O — User I/O pin (bank D) |
| Chân 54 | I/O — User I/O pin (bank D) |
| Chân 55 | I/O — User I/O pin (bank D) |
| Chân 56 | I/O — User I/O pin (bank D) |
| Chân 57 | I/O — User I/O pin (bank D) |
| Chân 58 | I/O — User I/O pin (bank D) |
| Chân 59 | I/O — User I/O pin (bank D) |
| Chân 60 | I/O — User I/O pin (bank D) |
| Chân 61 | I/O — User I/O pin (bank D) |
| Chân 62 | I/O — User I/O pin (bank D) |
| Chân 63 | I/O — User I/O pin (bank D) |
| Chân 64 | I/O — User I/O pin (bank D) |
| Chân 65 | I/O — User I/O pin (bank D) |
| Chân 66 | I/O — User I/O pin (bank D) |
| Chân 67 | VCC — 5V supply |
| Chân 68 | GND — Ground |
| Chân 69 | I/O — User I/O pin (bank E) |
| Chân 70 | I/O — User I/O pin (bank E) |
| Chân 71 | I/O — User I/O pin (bank E) |
| Chân 72 | I/O — User I/O pin (bank E) |
| Chân 73 | I/O — User I/O pin (bank E) |
| Chân 74 | I/O — User I/O pin (bank E) |
| Chân 75 | I/O — User I/O pin (bank E) |
| Chân 76 | I/O — User I/O pin (bank E) |
| Chân 77 | I/O — User I/O pin (bank E) |
| Chân 78 | I/O — User I/O pin (bank E) |
| Chân 79 | I/O — User I/O pin (bank E) |
| Chân 80 | I/O — User I/O pin (bank E) |
| Chân 81 | I/O — User I/O pin (bank E) |
| Chân 82 | I/O — User I/O pin (bank E) |
| Chân 83 | I/O — User I/O pin (bank E) |
| Chân 84 | VCC — 5V supply |
| Chân 85 | GND — Ground |
| Chân 86 | I/O — User I/O pin (bank F) |
| Chân 87 | I/O — User I/O pin (bank F) |
| Chân 88 | I/O — User I/O pin (bank F) |
| Chân 89 | I/O — User I/O pin (bank F) |
| Chân 90 | I/O — User I/O pin (bank F) |
| Chân 91 | I/O — User I/O pin (bank F) |
| Chân 92 | I/O — User I/O pin (bank F) |
| Chân 93 | I/O — User I/O pin (bank F) |
| Chân 94 | I/O — User I/O pin (bank F) |
| Chân 95 | I/O — User I/O pin (bank F) |
| Chân 96 | I/O — User I/O pin (bank F) |
| Chân 97 | I/O — User I/O pin (bank F) |
| Chân 98 | I/O — User I/O pin (bank F) |
| Chân 99 | I/O — User I/O pin (bank F) |
| Chân 100 | I/O — User I/O pin (bank F) |
| Chân 101 | VCC — 5V supply |
| Chân 102 | GND — Ground |
| Chân 103 | I/O — User I/O pin (bank G) |
| Chân 104 | I/O — User I/O pin (bank G) |
| Chân 105 | I/O — User I/O pin (bank G) |
| Chân 106 | I/O — User I/O pin (bank G) |
| Chân 107 | I/O — User I/O pin (bank G) |
| Chân 108 | I/O — User I/O pin (bank G) |
| Chân 109 | I/O — User I/O pin (bank G) |
| Chân 110 | I/O — User I/O pin (bank G) |
| Chân 111 | I/O — User I/O pin (bank G) |
| Chân 112 | I/O — User I/O pin (bank G) |
| Chân 113 | I/O — User I/O pin (bank G) |
| Chân 114 | I/O — User I/O pin (bank G) |
| Chân 115 | I/O — User I/O pin (bank G) |
| Chân 116 | I/O — User I/O pin (bank G) |
| Chân 117 | I/O — User I/O pin (bank G) |
| Chân 118 | VCC — 5V supply |
| Chân 119 | GND — Ground |
| Chân 120 | I/O — User I/O pin (bank H) |
| Chân 121 | I/O — User I/O pin (bank H) |
| Chân 122 | I/O — User I/O pin (bank H) |
| Chân 123 | I/O — User I/O pin (bank H) |
| Chân 124 | I/O — User I/O pin (bank H) |
| Chân 125 | I/O — User I/O pin (bank H) |
| Chân 126 | I/O — User I/O pin (bank H) |
| Chân 127 | I/O — User I/O pin (bank H) |
| Chân 128 | I/O — User I/O pin (bank H) |
| Chân 129 | I/O — User I/O pin (bank H) |
| Chân 130 | I/O — User I/O pin (bank H) |
| Chân 131 | I/O — User I/O pin (bank H) |
| Chân 132 | I/O — User I/O pin (bank H) |
| Chân 133 | I/O — User I/O pin (bank H) |
| Chân 134 | I/O — User I/O pin (bank H) |
| Chân 135 | VCC — 5V supply |
| Chân 136 | GND — Ground |
| Chân 137 | I/O — User I/O pin (bank A) |
| Chân 138 | I/O — User I/O pin (bank A) |
| Chân 139 | I/O — User I/O pin (bank A) |
| Chân 140 | I/O — User I/O pin (bank A) |
| Chân 141 | I/O — User I/O pin (bank A) |
| Chân 142 | I/O — User I/O pin (bank A) |
| Chân 143 | I/O — User I/O pin (bank A) |
| Chân 144 | I/O — User I/O pin (bank A) |
| Chân 145 | I/O — User I/O pin (bank A) |
| Chân 146 | I/O — User I/O pin (bank A) |
| Chân 147 | I/O — User I/O pin (bank A) |
| Chân 148 | I/O — User I/O pin (bank A) |
| Chân 149 | I/O — User I/O pin (bank A) |
| Chân 150 | I/O — User I/O pin (bank A) |
| Chân 151 | I/O — User I/O pin (bank A) |
| Chân 152 | VCC — 5V supply |
| Chân 153 | GND — Ground |
| Chân 154 | I/O — User I/O pin (bank B) |
| Chân 155 | I/O — User I/O pin (bank B) |
| Chân 156 | I/O — User I/O pin (bank B) |
| Chân 157 | I/O — User I/O pin (bank B) |
| Chân 158 | I/O — User I/O pin (bank B) |
| Chân 159 | I/O — User I/O pin (bank B) |
| Chân 160 | I/O — User I/O pin (bank B) |
| Chân 161 | I/O — User I/O pin (bank B) |
| Chân 162 | I/O — User I/O pin (bank B) |
| Chân 163 | I/O — User I/O pin (bank B) |
| Chân 164 | I/O — User I/O pin (bank B) |
| Chân 165 | I/O — User I/O pin (bank B) |
| Chân 166 | I/O — User I/O pin (bank B) |
| Chân 167 | I/O — User I/O pin (bank B) |
| Chân 168 | I/O — User I/O pin (bank B) |
| Chân 169 | VCC — 5V supply |
| Chân 170 | GND — Ground |
| Chân 171 | I/O — User I/O pin (bank C) |
| Chân 172 | I/O — User I/O pin (bank C) |
| Chân 173 | I/O — User I/O pin (bank C) |
| Chân 174 | I/O — User I/O pin (bank C) |
| Chân 175 | I/O — User I/O pin (bank C) |
| Chân 176 | I/O — User I/O pin (bank C) |
| Chân 177 | I/O — User I/O pin (bank C) |
| Chân 178 | I/O — User I/O pin (bank C) |
| Chân 179 | I/O — User I/O pin (bank C) |
| Chân 180 | I/O — User I/O pin (bank C) |
| Chân 181 | I/O — User I/O pin (bank C) |
| Chân 182 | I/O — User I/O pin (bank C) |
| Chân 183 | I/O — User I/O pin (bank C) |
| Chân 184 | I/O — User I/O pin (bank C) |
| Chân 185 | I/O — User I/O pin (bank C) |
| Chân 186 | VCC — 5V supply |
| Chân 187 | GND — Ground |
| Chân 188 | I/O — User I/O pin (bank D) |
| Chân 189 | I/O — User I/O pin (bank D) |
| Chân 190 | I/O — User I/O pin (bank D) |
| Chân 191 | I/O — User I/O pin (bank D) |
| Chân 192 | I/O — User I/O pin (bank D) |
| Chân 193 | I/O — User I/O pin (bank D) |
| Chân 194 | I/O — User I/O pin (bank D) |
| Chân 195 | I/O — User I/O pin (bank D) |
| Chân 196 | I/O — User I/O pin (bank D) |
| Chân 197 | I/O — User I/O pin (bank D) |
| Chân 198 | I/O — User I/O pin (bank D) |
| Chân 199 | I/O — User I/O pin (bank D) |
| Chân 200 | I/O — User I/O pin (bank D) |
| Chân 201 | I/O — User I/O pin (bank D) |
| Chân 202 | I/O — User I/O pin (bank D) |
| Chân 203 | VCC — 5V supply |
| Chân 204 | GND — Ground |
| Chân 205 | nCONFIG — Configuration control (active low) |
| Chân 206 | nSTATUS — Configuration status (active low) |
| Chân 207 | CONF_DONE — Configuration done indicator |
| Chân 208 | TCK — JTAG test clock (IEEE 1149.1) |
Ứng dụng tiêu biểu
EPF8820AQC208-3 phù hợp cho 6 Áp dụngs: Legacy Telecom Glue Logic, Industrial Control Front-End, Custom Peripheral Bus Bridge, Hardware State-Machine Controller, DSP Pre/Post-Processing Accelerator, Test & Measurement Fixture Logic.
Legacy Telecom Glue Logic
The EPF8820AQC208-3 fits telecom glue-logic designs thanks to its 152 5V-tolerant I/Os that connect directly to legacy TTL/CMOS bus peripherals without level shifters. With 672 LEs across 84 LABs it bridges E1/T1 framers, HDLC controllers, and time-slot interchangers at line rates up to tens of MHz. Unlike smaller CPLDs, the FastTrack interconnect delivers uniform tpd across the die, simplifying timing closure when fanning out to multiple bus segments. A typical circuit places the EPF8820AQC208-3 between a framer IC and a backplane transceiver, with JTAG access for boundary-scan production test.
Được đề xuất
Industrial Control Front-End
The EPF8820AQC208-3 is widely deployed in industrial PLC and motion-control front-ends because its 5 V I/O tolerance mates directly with 24 V isolated digital inputs and 5 V sensor buses via external buffers. The 672-LE capacity is sufficient for PWM generation, encoder decoding (incremental and SSI), and custom deterministic state machines. The commercial 0C to 70C operating range suits cabinet-mounted controllers, while JTAG boundary-scan accelerates in-circuit test on densely populated backplanes. Designers benefit from FastTrack predictable routing when fanning out 100+ control signals across multiple connector banks.
Được đề xuất
Custom Peripheral Bus Bridge
With 152 user I/Os and 8,000 usable gates, the EPF8820AQC208-3 can implement multi-master bus bridges between legacy ISA, PC/104, and proprietary peripheral buses. Its SRAM-based fabric lets designers iterate bridge protocols during system bring-up without mask charges, and JTAG enables live reconfiguration of bus protocol state machines during field debug. The 208-pin PQFP footprint offers ample 5V-tolerant I/O for both address/data multiplexing and interrupt/control signal replication. Compared to a discrete 74-series implementation, the EPF8820AQC208-3 reduces PCB area by 5-10x and consolidates timing-critical glue into one timing-closed device.
Được đề xuất
Hardware State-Machine Controller
The EPF8820AQC208-3 excels at implementing complex, multi-state control sequencers that would otherwise require dozens of PAL/GAL devices. With 84 LABs it can hold 50+ parallel finite state machines plus their interlock logic, and its SRAM configuration enables late-stage firmware changes. The 5V I/Os interface directly to opto-isolated industrial outputs, while the JTAG TAP controller provides a window into internal states during integration testing. Designers typically use MAX+PLUS II to enter state machines as AHDL/Verilog and synthesize into the device. Compared to a microcontroller, the FPGA delivers deterministic single-clock-cycle state transitions without RTOS overhead.
Được đề xuất
DSP Pre/Post-Processing Accelerator
In cost-sensitive DSP subsystems, the EPF8820AQC208-3 acts as a hardware accelerator for FIR filtering, data formatting, and protocol encapsulation offloaded from a host DSP. Its 672 LEs support 16-tap FIR filters or parallel CRC engines running at full 5V I/O speeds, and FastTrack interconnect ensures uniform sample-to-sample timing. Designers often pair the FPGA with a serial EEPROM configuration device (EPC1 or EPC1064) for fast power-up boot, and route JTAG to a header for emulator access. Compared to a DSP software implementation, the FPGA variant typically delivers 3-10x throughput per MHz while freeing the host DSP for control tasks.
Được đề xuất
Test & Measurement Fixture Logic
The EPF8820AQC208-3 is a strong fit for ATE pin-card and bed-of-nails fixture logic, where 152 5V I/Os connect to UUT pins through relays and the FPGA orchestrates stimulus/response sequences. Its SRAM fabric lets test engineers swap personality bitstreams for different UUTs in seconds, and JTAG provides full visibility into FPGA states during fixture bring-up. The commercial temperature range suits bench fixtures, while the 208-PQFP is easy to socket or rework. Designers appreciate the deterministic FastTrack delays when sequencing parallel test vectors to multiple UUT pins at once.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8820AQC208-3 — 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 | EPF8820AQC208-2N | EPF8820AQC208-2 | EPF8820AQC160-4 | EPF8820AQC160-3 | EPF8820AQC160-2 | EPF81188AQC208-3 |
|---|---|---|---|---|---|---|---|
| Package | 208-pin PQFP (28x28 mm) | 208-pin PQFP - same | 208-pin PQFP - same | 160-pin PQFP - same family | 160-pin PQFP - same family | 160-pin PQFP - same family | 208-pin PQFP - same |
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
| Logic Elements | 672 | 672 | 672 | 672 | 672 | 672 | 1,188 |
| Speed Grade | -3 | -2 (faster) | -2 (faster) | -4 (fastest) | -3 (same) | -2 (faster) | -3 (same) |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 12,000 |
| User I/Os | 152 | 152 | 152 | 120 | 120 | 120 | 171 |
| Supply Voltage | 5 V (4.75 V to 5.25 V) | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete (EOL) | Obsolete (EOL) | Obsolete (EOL) | Obsolete (EOL) | Obsolete (EOL) | Obsolete (EOL) | Obsolete (EOL) |
Bảo phân biệt quan trọng
- Higher logic density with same 208-PQFP footprint (vsEPF81188AQC208-3)
- Faster speed grade variant available (vsEPF8820AQC208-2N)
- Reduced pin-count footprint option (vsEPF8820AQC160-3)
Ghi chú thiết kế
The EPF8820AQC208-3 requires a clean 5 V supply (4.75 V to 5.25 V) with adequate decoupling. Place one 0.1 uF ceramic capacitor per VCC pin pair and one bulk 22-47 uF tantalum or aluminum polymer capacitor near each VCC bank. SRAM-based FPGAs draw surge currents during configuration; the bulk capacitor prevents VCC droop that can cause configuration failures. Estimated: at 25 MHz toggle activity on 100 I/Os, ICCINT is typically 150-250 mA; size the regulator for at least 1.5x this value plus headroom for inrush.
Use a 4-layer PCB with dedicated VCC and GND planes for the EPF8820AQC208-3. Route all 152 user I/Os on short, matched traces and avoid 90-degree bends to reduce reflections on 5V TTL-level signals. Place configuration EPROM (EPC1/EPC1064/EPC1213/EPC1441) within 50 mm of the FPGA to keep configuration traces short. Expose JTAG pins (TCK, TMS, TDI, TDO, nCONFIG, nSTATUS, CONF_DONE) to a 0.1-inch header or 10-pin JTAG ribbon for debug and production programming.
Because the EPF8820AQC208-3 is marked Obsolete/EOL, do not use it for new production designs without a written last-time-buy commitment from Altera/Intel. Modern designs should target Cyclone IV, MAX II, or MAX V as functionally equivalent replacements, but note that none of these are pin-compatible - a PCB redesign is required. For legacy support, qualify a single broker-sourced lot and verify authenticity before use.
The 208-pin PQFP package has relatively long lead inductance (~5-7 nH) that can create ground bounce on heavily-loaded outputs. Use series damping resistors (22-33 ohm) on outputs driving backplane connectors, and avoid simultaneous switching of more than 16 outputs per bank. For clock distribution, dedicate one global FastTrack buffer per clock domain to minimize skew.
Thông tin tuân thủ
The EPF8820AQC208-3 is an obsolete Altera FLEX 8000 device; compliance documentation is not explicitly listed in current distributor data. The PQFP-208 package is typically Pb-free for legacy Altera commercial parts, but RoHS/REACH status is not confirmed by current datasheets.
