EPF8820ARI208-3 - 672 LE FLEX 8000 FPGA, 208-PQFP | Altera
MPN: EPF8820ARI208-3 ✗ Cuối đờiEPF8820ARI208-3 Tóm tắt
An FPGA (Field-Programmable Gate Array) is a type of programmable logic device that allows designers to configure arbitrary digital logic after manufacturing using a combination of look-up tables (LUTs), programmable interconnect, and I/O cells. FPGAs sit within the semiconductor hierarchy as: programmable logic -> logic IC -> integrated circuit -> semiconductor. The FLEX 8000 family was Altera's first-generation fine-grained SRAM-based FPGA architecture, predating modern Cyclone and Stratix families, and remains in service in long-lifecycle industrial, telecom, and legacy aerospace designs.
Key architectural features include 672 logic elements, 152 user I/O, configurable I/O voltage (3.3 V or 5 V), 385 MHz maximum clock frequency, and SRAM-based configuration cells requiring external configuration memory. The -3 speed grade indicates a specific FLEX 8000 timing bin, and the 'I' suffix denotes the industrial temperature range. Unlike modern flash- or antifuse-based FPGAs, FLEX 8000 devices must be reconfigured on every power-up via a serial configuration EPROM or microcontroller.
Typical applications include industrial control logic, telecom interface glue logic, legacy PCI bridge designs, peripheral bus controllers, and long-lifecycle embedded systems where re-spinning the FPGA is impractical. The 5 V tolerance on I/O is particularly valuable for interfacing to legacy TTL buses.
When designing with this device, note that FLEX 8000 devices are now NRND/EOL - plan for migration to Cyclone II/III/V or similar modern Altera/Intel FPGAs for new designs. Programming requires Altera MAX+PLUS II or Quartus (legacy support mode) plus a configuration device such as EPC1 or EPC2.
This page synthesizes distributor stock, drop-in same-package alternatives from the FLEX 8000 family, and practical migration guidance not found in the original datasheet.
Bộ thay thế dễ dàng lắp đặt cho EPF8820ARI208-3 — 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 EPF8820ARI208-3 (cùng hình factor và footprint) — khác nhau ở Package, Process Technology, Configuration Method, Device Type, Usable Gates.
EPF8820ARC208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-3N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820AQC208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARC208-4N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF8820ARI208-3 Tỷ lệ tối đa & tính chất điện
| Family | FLEX 8000 |
| Device Type | FPGA (Field-Programmable Gate Array) |
| Logic Elements | 672 |
| Maximum User I/O | 152 |
| Dedicated Inputs | 4 |
| Hộp | 208-pin PQFP (Plastic Quad Flat Pack) |
| Package Code | HFQFP (PQFP208) |
| Terminal Form | Gull Wing |
| Process Technology | CMOS (SRAM-based configuration) |
| I/O Supply Voltage | 3.3 V or 5 V configurable |
| Tần số xung maksimum | 385 MHz |
| Temperature Grade | Industrial |
| Speed Grade | -3 |
| Configuration Method | SRAM (requires external config device) |
| Programming Tool | Altera MAX+PLUS II / Quartus (legacy) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái vòng đời | Not Recommended for New Designs (NRND) |
Cấu hình chân EPF8820ARI208-3
| Chân 1 | I/O — User I/O pin (bank 1) |
| Chân 2 | I/O — User I/O pin (bank 1) |
| Chân 3 | I/O — User I/O pin (bank 1) |
| Chân 4 | I/O — User I/O pin (bank 1) |
| Chân 5 | VCCINT — Internal core supply (5 V) |
| Chân 6 | GND — Ground |
| Chân 7 | I/O — User I/O pin (bank 1) |
| Chân 8 | I/O — User I/O pin (bank 1) |
| Chân 9 | I/O — User I/O pin (bank 1) |
| Chân 10 | I/O — User I/O pin (bank 1) |
| Chân 11 | I/O — User I/O pin (bank 1) |
| Chân 12 | I/O — User I/O pin (bank 1) |
| Chân 13 | I/O — User I/O pin (bank 1) |
| Chân 14 | I/O — User I/O pin (bank 1) |
| Chân 15 | I/O — User I/O pin (bank 1) |
| Chân 16 | GND — Ground |
| Chân 17 | I/O — User I/O pin (bank 2) |
| Chân 18 | I/O — User I/O pin (bank 2) |
| Chân 19 | I/O — User I/O pin (bank 2) |
| Chân 20 | I/O — User I/O pin (bank 2) |
| Chân 21 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 22 | I/O — User I/O pin (bank 2) |
| Chân 23 | I/O — User I/O pin (bank 2) |
| Chân 24 | I/O — User I/O pin (bank 2) |
| Chân 25 | I/O — User I/O pin (bank 2) |
| Chân 26 | I/O — User I/O pin (bank 2) |
| Chân 27 | I/O — User I/O pin (bank 2) |
| Chân 28 | I/O — User I/O pin (bank 2) |
| Chân 29 | I/O — User I/O pin (bank 2) |
| Chân 30 | I/O — User I/O pin (bank 2) |
| Chân 31 | GND — Ground |
| Chân 32 | I/O — User I/O pin (bank 3) |
| Chân 33 | I/O — User I/O pin (bank 3) |
| Chân 34 | I/O — User I/O pin (bank 3) |
| Chân 35 | I/O — User I/O pin (bank 3) |
| Chân 36 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 37 | I/O — User I/O pin (bank 3) |
| Chân 38 | I/O — User I/O pin (bank 3) |
| Chân 39 | I/O — User I/O pin (bank 3) |
| Chân 40 | I/O — User I/O pin (bank 3) |
| Chân 41 | I/O — User I/O pin (bank 3) |
| Chân 42 | I/O — User I/O pin (bank 3) |
| Chân 43 | I/O — User I/O pin (bank 3) |
| Chân 44 | I/O — User I/O pin (bank 3) |
| Chân 45 | I/O — User I/O pin (bank 3) |
| Chân 46 | GND — Ground |
| Chân 47 | I/O — User I/O pin (bank 4) |
| Chân 48 | I/O — User I/O pin (bank 4) |
| Chân 49 | I/O — User I/O pin (bank 4) |
| Chân 50 | I/O — User I/O pin (bank 4) |
| Chân 51 | VCCINT — Internal core supply (5 V) |
| Chân 52 | I/O — User I/O pin (bank 4) |
| Chân 53 | I/O — User I/O pin (bank 4) |
| Chân 54 | I/O — User I/O pin (bank 4) |
| Chân 55 | I/O — User I/O pin (bank 4) |
| Chân 56 | I/O — User I/O pin (bank 4) |
| Chân 57 | I/O — User I/O pin (bank 4) |
| Chân 58 | I/O — User I/O pin (bank 4) |
| Chân 59 | I/O — User I/O pin (bank 4) |
| Chân 60 | I/O — User I/O pin (bank 4) |
| Chân 61 | GND — Ground |
| Chân 62 | I/O — User I/O pin (bank 5) |
| Chân 63 | I/O — User I/O pin (bank 5) |
| Chân 64 | I/O — User I/O pin (bank 5) |
| Chân 65 | I/O — User I/O pin (bank 5) |
| Chân 66 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 67 | I/O — User I/O pin (bank 5) |
| Chân 68 | I/O — User I/O pin (bank 5) |
| Chân 69 | I/O — User I/O pin (bank 5) |
| Chân 70 | I/O — User I/O pin (bank 5) |
| Chân 71 | I/O — User I/O pin (bank 5) |
| Chân 72 | I/O — User I/O pin (bank 5) |
| Chân 73 | I/O — User I/O pin (bank 5) |
| Chân 74 | I/O — User I/O pin (bank 5) |
| Chân 75 | I/O — User I/O pin (bank 5) |
| Chân 76 | GND — Ground |
| Chân 77 | I/O — User I/O pin (bank 6) |
| Chân 78 | I/O — User I/O pin (bank 6) |
| Chân 79 | I/O — User I/O pin (bank 6) |
| Chân 80 | I/O — User I/O pin (bank 6) |
| Chân 81 | VCCINT — Internal core supply (5 V) |
| Chân 82 | I/O — User I/O pin (bank 6) |
| Chân 83 | I/O — User I/O pin (bank 6) |
| Chân 84 | I/O — User I/O pin (bank 6) |
| Chân 85 | I/O — User I/O pin (bank 6) |
| Chân 86 | I/O — User I/O pin (bank 6) |
| Chân 87 | I/O — User I/O pin (bank 6) |
| Chân 88 | I/O — User I/O pin (bank 6) |
| Chân 89 | I/O — User I/O pin (bank 6) |
| Chân 90 | I/O — User I/O pin (bank 6) |
| Chân 91 | GND — Ground |
| Chân 92 | I/O — User I/O pin (bank 7) |
| Chân 93 | I/O — User I/O pin (bank 7) |
| Chân 94 | I/O — User I/O pin (bank 7) |
| Chân 95 | I/O — User I/O pin (bank 7) |
| Chân 96 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 97 | I/O — User I/O pin (bank 7) |
| Chân 98 | I/O — User I/O pin (bank 7) |
| Chân 99 | I/O — User I/O pin (bank 7) |
| Chân 100 | I/O — User I/O pin (bank 7) |
| Chân 101 | I/O — User I/O pin (bank 7) |
| Chân 102 | I/O — User I/O pin (bank 7) |
| Chân 103 | I/O — User I/O pin (bank 7) |
| Chân 104 | I/O — User I/O pin (bank 7) |
| Chân 105 | I/O — User I/O pin (bank 7) |
| Chân 106 | GND — Ground |
| Chân 107 | I/O — User I/O pin (bank 8) |
| Chân 108 | I/O — User I/O pin (bank 8) |
| Chân 109 | I/O — User I/O pin (bank 8) |
| Chân 110 | I/O — User I/O pin (bank 8) |
| Chân 111 | VCCINT — Internal core supply (5 V) |
| Chân 112 | I/O — User I/O pin (bank 8) |
| Chân 113 | I/O — User I/O pin (bank 8) |
| Chân 114 | I/O — User I/O pin (bank 8) |
| Chân 115 | I/O — User I/O pin (bank 8) |
| Chân 116 | I/O — User I/O pin (bank 8) |
| Chân 117 | I/O — User I/O pin (bank 8) |
| Chân 118 | I/O — User I/O pin (bank 8) |
| Chân 119 | I/O — User I/O pin (bank 8) |
| Chân 120 | I/O — User I/O pin (bank 8) |
| Chân 121 | GND — Ground |
| Chân 122 | nCONFIG — Configuration control (active-low) |
| Chân 123 | nSTATUS — Configuration status (active-low) |
| Chân 124 | CONF_DONE — Configuration done indicator |
| Chân 125 | DCLK — Configuration clock input |
| Chân 126 | DATA0 — Configuration data input (bit 0) |
| Chân 127 | DATA1 — Configuration data input (bit 1) |
| Chân 128 | DATA2 — Configuration data input (bit 2) |
| Chân 129 | DATA3 — Configuration data input (bit 3) |
| Chân 130 | DATA4 — Configuration data input (bit 4) |
| Chân 131 | DATA5 — Configuration data input (bit 5) |
| Chân 132 | DATA6 — Configuration data input (bit 6) |
| Chân 133 | DATA7 — Configuration data input (bit 7) |
| Chân 134 | GND — Ground |
| Chân 135 | TDI — JTAG Test Data Input |
| Chân 136 | TDO — JTAG Test Data Output |
| Chân 137 | TMS — JTAG Test Mode Select |
| Chân 138 | TCK — JTAG Test Clock |
| Chân 139 | TRST — JTAG Test Reset (active-low) |
| Chân 140 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 141 | I/O — User I/O pin |
| Chân 142 | I/O — User I/O pin |
| Chân 143 | I/O — User I/O pin |
| Chân 144 | I/O — User I/O pin |
| Chân 145 | I/O — User I/O pin |
| Chân 146 | GND — Ground |
| Chân 147 | I/O — User I/O pin |
| Chân 148 | I/O — User I/O pin |
| Chân 149 | I/O — User I/O pin |
| Chân 150 | I/O — User I/O pin |
| Chân 151 | I/O — User I/O pin |
| Chân 152 | VCCINT — Internal core supply (5 V) |
| Chân 153 | I/O — User I/O pin |
| Chân 154 | I/O — User I/O pin |
| Chân 155 | I/O — User I/O pin |
| Chân 156 | I/O — User I/O pin |
| Chân 157 | I/O — User I/O pin |
| Chân 158 | I/O — User I/O pin |
| Chân 159 | I/O — User I/O pin |
| Chân 160 | I/O — User I/O pin |
| Chân 161 | GND — Ground |
| Chân 162 | I/O — User I/O pin |
| Chân 163 | I/O — User I/O pin |
| Chân 164 | I/O — User I/O pin |
| Chân 165 | I/O — User I/O pin |
| Chân 166 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 167 | I/O — User I/O pin |
| Chân 168 | I/O — User I/O pin |
| Chân 169 | I/O — User I/O pin |
| Chân 170 | I/O — User I/O pin |
| Chân 171 | I/O — User I/O pin |
| Chân 172 | I/O — User I/O pin |
| Chân 173 | I/O — User I/O pin |
| Chân 174 | I/O — User I/O pin |
| Chân 175 | I/O — User I/O pin |
| Chân 176 | GND — Ground |
| Chân 177 | I/O — User I/O pin |
| Chân 178 | I/O — User I/O pin |
| Chân 179 | I/O — User I/O pin |
| Chân 180 | I/O — User I/O pin |
| Chân 181 | VCCINT — Internal core supply (5 V) |
| Chân 182 | I/O — User I/O pin |
| Chân 183 | I/O — User I/O pin |
| Chân 184 | I/O — User I/O pin |
| Chân 185 | I/O — User I/O pin |
| Chân 186 | I/O — User I/O pin |
| Chân 187 | I/O — User I/O pin |
| Chân 188 | I/O — User I/O pin |
| Chân 189 | I/O — User I/O pin |
| Chân 190 | I/O — User I/O pin |
| Chân 191 | GND — Ground |
| Chân 192 | I/O — User I/O pin |
| Chân 193 | I/O — User I/O pin |
| Chân 194 | I/O — User I/O pin |
| Chân 195 | I/O — User I/O pin |
| Chân 196 | VCCIO — I/O supply (3.3 V or 5 V) |
| Chân 197 | I/O — User I/O pin |
| Chân 198 | I/O — User I/O pin |
| Chân 199 | I/O — User I/O pin |
| Chân 200 | I/O — User I/O pin |
| Chân 201 | I/O — User I/O pin |
| Chân 202 | I/O — User I/O pin |
| Chân 203 | I/O — User I/O pin |
| Chân 204 | I/O — User I/O pin |
| Chân 205 | I/O — User I/O pin |
| Chân 206 | GND — Ground |
| Chân 207 | DEV_CLRn — Device clear (active-low) |
| Chân 208 | DEV_OE — Device output enable |
Ứng dụng tiêu biểu
EPF8820ARI208-3 phù hợp cho 6 Áp dụngs: Industrial Control Logic, Telecom Interface Glue Logic, Legacy PCI Bridge Designs, Peripheral Bus Controllers, Medical Imaging Front-End Logic, Test and Measurement Instrumentation.
Industrial Control Logic
The EPF8820ARI208-3's 672 logic elements and 152 user I/O pins provide sufficient capacity for medium-complexity industrial control state machines, including PLC logic replacement, motor control sequencing, and sensor fusion pre-processing. Its 3.3 V / 5 V configurable I/O allows direct interfacing to legacy 5 V TTL industrial buses, optocouplers, and 24 V industrial transceivers with simple resistive level shifting. The industrial temperature rating (-40C to +85C) ensures reliable operation in factory floor enclosures and outdoor equipment. The 385 MHz maximum clock frequency is more than adequate for deterministic control loops at sub-microsecond latency. Long-lifecycle FLEX 8000 silicon availability through brokers enables 10-15 year production runs for industrial OEMs that cannot re-spin their FPGA design.
Được đề xuất
Telecom Interface Glue Logic
The EPF8820ARI208-3 is well suited as glue logic between legacy telecom ASICs, T1/E1 framer chips, and backplane transceivers where deterministic low-latency bus conversion is required. With 152 user I/O, the device can implement multiple parallel protocol converters (e.g., UTOPIA to PCM, HDLC to FIFO) in a single chip, reducing board area. Its 5 V tolerant I/O directly interfaces to legacy telecom line interface units that operate at 5 V TTL levels, eliminating level shifters. The 208-pin PQFP package with 0.5 mm pitch accommodates high I/O count designs while remaining hand-solderable for low-volume repair. FPGAs in this role are commonly deployed in central-office equipment with 15-20 year deployment cycles.
Được đề xuất
Legacy PCI Bridge Designs
The EPF8820ARI208-3 is widely deployed as a custom PCI bridge in legacy PC and embedded systems, implementing 33 MHz PCI target or master interfaces and protocol translation between PCI and local processor buses. The 672 LE capacity comfortably fits a 32-bit PCI target with FIFOs and address decoding, while 152 I/O pins allow direct connection to the PCI bus plus local processor data, address, and control signals. The 5 V tolerant I/O is critical for PCI 5 V signaling environments. The -3 speed grade meets 33 MHz PCI timing closure requirements with margin. Migration to PCI Express requires a redesign, but the FLEX 8000 family remains in production for legacy PCI-based systems in industrial PCs and medical imaging equipment.
Được đề xuất
Peripheral Bus Controllers
The EPF8820ARI208-3 implements custom peripheral bus controllers such as ISA-to-local-bus bridges, VME bus interfaces, and proprietary backplane controllers in aerospace and defense subsystems. Its 152 I/O pins can directly drive multi-byte parallel data buses plus address and control signals, while the 672 LEs accommodate state machines for bus arbitration and protocol sequencing. The industrial temperature grade supports deployment in avionics bays and ground vehicle electronics. The FLEX 8000 family has extensive flight heritage in military and aerospace systems, and qualification data exists for many legacy defense platforms. Long-term broker availability supports 20+ year sustainment programs typical in this segment.
Được đề xuất
Medical Imaging Front-End Logic
The EPF8820ARI208-3 serves as front-end timing and control logic in medical imaging systems such as ultrasound beamformers, X-ray detector readout boards, and patient monitoring peripherals. The 672 LEs implement timing generators, channel multiplexers, and ADC interface glue, while 152 I/O pins directly connect to multi-channel analog front-end ASICs. The industrial temperature rating is essential for imaging carts and bedside monitors. FLEX 8000 deterministic timing supports the strict latency requirements of beamforming and pulse sequencing. Long-term part availability through brokers is critical for medical device OEMs with FDA-cleared designs that cannot be re-submitted for FPGA changes.
Được đề xuất
Test and Measurement Instrumentation
The EPF8820ARI208-3 is deployed in legacy test and measurement instruments such as oscilloscope acquisition boards, protocol analyzers, and ATE (Automatic Test Equipment) pin electronics where deterministic custom logic is required. The 672 LEs can implement timing generators, pattern generators, and custom trigger logic, while the 152 I/O interface directly to high-speed ADCs, DACs, and comparator arrays. The 5 V I/O tolerance accommodates legacy analog front-end components. Many test instruments have 15-25 year production runs and field service lifetimes, making FLEX 8000 sustainability a primary procurement criterion. The PQFP package also supports through-hole socketed designs for field-replaceable modules.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF8820ARI208-3 — 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 | EPF8820ARC208-3 | EPF8820ARC208-3N | EPF8820AQC208-3 | EPF8820ARC208-4 |
|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Brand | Altera | Altera | Altera | Altera | Altera |
| Logic Elements | 672 | 672 | 672 | 672 | 672 |
| Speed Grade | -3 | -3 | -3 | -3 | -4 (faster) |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C), lead-free | Commercial (0C to +70C) | Commercial (0C to +70C) |
| User I/O | 152 | 152 | 152 | 152 | 152 |
| I/O Voltage | 3.3 V or 5 V | 3.3 V or 5 V | 3.3 V or 5 V | 3.3 V or 5 V | 3.3 V or 5 V |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Industrial temperature rating within 208-pin PQFP FLEX 8000 family (vsEPF8820ARC208-3)
- Speed grade -3 with 385 MHz Fmax for moderate-performance designs (vsEPF8820ARC208-2)
- Same silicon as all FLEX 8000 EPF8820 variants - fully portable bitstream (vsEPF8636ARC208-3)
Ghi chú thiết kế
The EPF8820ARI208-3 requires two separate power rails: VCCINT (5 V core supply, typically 250 mA quiescent) and VCCIO (3.3 V or 5 V I/O supply, bank-dependent current). Decoupling requires at least 4 x 0.1 uF ceramic + 1 x 10 uF tantalum per VCCINT pin group, plus 1 x 0.1 uF + 1 x 4.7 uF per VCCIO bank. Power-on sequencing is not strict - both rails may rise simultaneously per the FLEX 8000 datasheet. For new designs, consider migrating to a Cyclone II/III/V equivalent with single 1.2 V core supply for substantial power savings (typically >70%).
The 208-pin PQFP package has 0.5 mm lead pitch and requires careful PCB layout: 0.2 mm solder mask dam between pads, 0.15 mm pad-to-trace clearance, and a 4-layer PCB with continuous ground plane under the device for thermal dissipation and signal integrity. All VCCINT and VCCIO pins must be connected with wide (>=0.5 mm) traces or power planes. Keep configuration clock (DCLK) trace short and away from switching I/O to avoid configuration errors during power-up.
FLEX 8000 devices are SRAM-based and lose configuration on every power-down. A configuration EPROM (EPC1, EPC2, or EPC16 depending on bitstream size) is mandatory for stand-alone operation - designs that omit it will fail to initialize. Additionally, the -3 speed grade has tighter timing margin than -4; review your static timing analysis with the -3 grade delays before committing. Finally, the FLEX 8000 family is NRND - if you are starting a new design, target Cyclone II/III/V to avoid near-term obsolescence.
Thông tin tuân thủ
RoHS/REACH compliance data not available in verified sources for this legacy Altera/Intel FPGA. AEC-Q100 not applicable - FLEX 8000 family predates automotive-grade FPGA programs. Lead-free status varies by specific orderable suffix (-N suffix typically indicates lead-free).