EPF8820ARC208-2A - FLEX 8000 FPGA, 672 Logic Elements, 152 I/O | Altera
N.º da peça: EPF8820ARC208-2A ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $24.2 | $242,00 |
| 100 | $19.75 | $1.975,00 |
| 500 | $16.4 | $8.200,00 |
| 1.000 | $14.1 | $14.100,00 |
EPF8820ARC208-2A Visão geral
What is an FPGA? A Field-Programmable Gate Array is a programmable logic device containing an array of configurable logic blocks (CLBs/LABs), programmable routing channels, and programmable I/O cells. Unlike a CPLD (Complex Programmable Logic Device) which uses non-volatile EEPROM/Flash cells, the FLEX 8000 family uses volatile SRAM configuration cells - meaning the device must be reconfigured at every power-up using a serial configuration PROM (EPC1, EPC1064, EPC1213, or EPC1441) or a microcontroller. FPGAs sit in the broader hierarchy: programmable logic device (PLD) -> FPGA -> SRAM-based FPGA -> FLEX 8000 family.
Key features include 152 user I/O, 672 logic elements organized into 84 LABs, embedded SRAM for distributed memory, JTAG (IEEE 1149.1) boundary-scan test support, multiVolt I/O allowing 3.3 V or 5.0 V interface levels on VCCIO pins, and tri-state buffer control on every I/O. The architecture combines fine-grained logic with predictable interconnect delays suitable for synchronous state machines, FIFO buffers, and custom peripheral implementations.
Technical depth: the FLEX 8000 family uses a continuous-row LAB architecture with FastTrack Interconnect running horizontally and vertically between rows. Each LAB contains 8 logic elements, and each LE contains a 4-input look-up table (LUT), a programmable register, and dedicated carry chain logic. Embedded array blocks (EABs) provide on-chip RAM/ROM up to 2 Kbits per block. Configuration is loaded serially via the DATA0/DCLK/nCONFIG pins or in parallel via the EPC series PROMs.
Typical applications include 5 V-tolerant glue logic, PCI bus interface bridges (33 MHz, 32-bit), industrial control state machines, custom peripheral replacement on legacy 8051/MIPS systems, and telecom backplane glue. The 5 V tolerance on VCCIO pins allows direct interface to legacy TTL logic without level shifters.
Design consideration: the FLEX 8000 family is in legacy/last-time-buy status - confirm lifecycle before starting a new design. Always include a JTAG header for in-system programming (ISP) via the Altera ByteBlaster or USB-Blaster download cable.
This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, including lifecycle alerts and configuration PROM recommendations.
Alternativas drop-in para EPF8820ARC208-2A — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EPF8820ARC208-2A (mesmo formato e footprint) — diferindo em Process Technology, Package, Configuration Method, Usable Gates, In-Circuit Reconfigurability.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPF8820ARC208-2
✅ Drop-In✓ Em estoque
$17.95 / unidade
Ver ficha técnica →EPF8820ARC208-24
✅ Drop-In✓ Em estoque
$27.8 / unidade
Ver ficha técnica →EPF8820ARC208-2A
✅ Drop-In✓ Em estoque
$14.1 / unidade
Ver ficha técnica →EPF8820ARC208-2A Classificações máximas e características elétricas
| Family | FLEX 8000 |
| Device Type | FPGA (Field Programmable Gate Array) |
| Logic Elements | 672 |
| Logic Array Blocks (LABs) | 84 |
| User I/O Pins | 152 |
| Dedicated Inputs | 4 |
| Supply Voltage (VCCINT) | 4.75 V to 5.25 V |
| I/O Supply Voltage (VCCIO) | 3.3 V or 5.0 V selectable |
| Propagation Delay (tPD) | 5 ns (typical, -2A speed grade) |
| Temperatura de operação | 0 °C to 70 °C (commercial) |
| Encapsulamento | 208-pin S-PQFP (Shrink Plastic Quad Flat Pack) with exposed pad |
| Terminal Pitch | 0.500 mm |
| Configuration Method | Serial SRAM, EPC1/EPC1064/EPC1213/EPC1441 PROM, or controller |
| JTAG Support | Yes (IEEE 1149.1 boundary-scan) |
| Process Technology | CMOS SRAM |
| Tipo de montagem | Surface Mount |
Configuração de pinos do EPF8820ARC208-2A
| Pino 1 | I/O — User I/O pin (bank 1) |
| Pino 2 | I/O — User I/O pin (bank 1) |
| Pino 3 | I/O — User I/O pin (bank 1) |
| Pino 4 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 5 | I/O — User I/O pin (bank 1) |
| Pino 6 | GND — Ground |
| Pino 7 | I/O — User I/O pin (bank 1) |
| Pino 8 | I/O — User I/O pin (bank 1) |
| Pino 9 | I/O — User I/O pin (bank 1) |
| Pino 10 | I/O — User I/O pin (bank 1) |
| Pino 11 | I/O — User I/O pin (bank 1) |
| Pino 12 | I/O — User I/O pin (bank 1) |
| Pino 13 | I/O — User I/O pin (bank 1) |
| Pino 14 | GND — Ground |
| Pino 15 | VCCINT — Core supply voltage (5 V) |
| Pino 16 | I/O — User I/O pin (bank 2) |
| Pino 17 | I/O — User I/O pin (bank 2) |
| Pino 18 | I/O — User I/O pin (bank 2) |
| Pino 19 | I/O — User I/O pin (bank 2) |
| Pino 20 | I/O — User I/O pin (bank 2) |
| Pino 21 | I/O — User I/O pin (bank 2) |
| Pino 22 | I/O — User I/O pin (bank 2) |
| Pino 23 | I/O — User I/O pin (bank 2) |
| Pino 24 | I/O — User I/O pin (bank 2) |
| Pino 25 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 26 | GND — Ground |
| Pino 27 | I/O — User I/O pin (bank 2) |
| Pino 28 | I/O — User I/O pin (bank 2) |
| Pino 29 | I/O — User I/O pin (bank 2) |
| Pino 30 | I/O — User I/O pin (bank 2) |
| Pino 31 | I/O — User I/O pin (bank 2) |
| Pino 32 | I/O — User I/O pin (bank 2) |
| Pino 33 | I/O — User I/O pin (bank 2) |
| Pino 34 | I/O — User I/O pin (bank 2) |
| Pino 35 | VCCINT — Core supply voltage (5 V) |
| Pino 36 | GND — Ground |
| Pino 37 | I/O — User I/O pin (bank 3) |
| Pino 38 | I/O — User I/O pin (bank 3) |
| Pino 39 | I/O — User I/O pin (bank 3) |
| Pino 40 | I/O — User I/O pin (bank 3) |
| Pino 41 | I/O — User I/O pin (bank 3) |
| Pino 42 | I/O — User I/O pin (bank 3) |
| Pino 43 | I/O — User I/O pin (bank 3) |
| Pino 44 | I/O — User I/O pin (bank 3) |
| Pino 45 | I/O — User I/O pin (bank 3) |
| Pino 46 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 47 | GND — Ground |
| Pino 48 | I/O — User I/O pin (bank 3) |
| Pino 49 | I/O — User I/O pin (bank 3) |
| Pino 50 | I/O — User I/O pin (bank 3) |
| Pino 51 | I/O — User I/O pin (bank 3) |
| Pino 52 | I/O — User I/O pin (bank 3) |
| Pino 53 | I/O — User I/O pin (bank 3) |
| Pino 54 | I/O — User I/O pin (bank 3) |
| Pino 55 | I/O — User I/O pin (bank 3) |
| Pino 56 | VCCINT — Core supply voltage (5 V) |
| Pino 57 | GND — Ground |
| Pino 58 | I/O — User I/O pin (bank 4) |
| Pino 59 | I/O — User I/O pin (bank 4) |
| Pino 60 | I/O — User I/O pin (bank 4) |
| Pino 61 | I/O — User I/O pin (bank 4) |
| Pino 62 | I/O — User I/O pin (bank 4) |
| Pino 63 | I/O — User I/O pin (bank 4) |
| Pino 64 | I/O — User I/O pin (bank 4) |
| Pino 65 | I/O — User I/O pin (bank 4) |
| Pino 66 | I/O — User I/O pin (bank 4) |
| Pino 67 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 68 | GND — Ground |
| Pino 69 | I/O — User I/O pin (bank 4) |
| Pino 70 | I/O — User I/O pin (bank 4) |
| Pino 71 | I/O — User I/O pin (bank 4) |
| Pino 72 | I/O — User I/O pin (bank 4) |
| Pino 73 | I/O — User I/O pin (bank 4) |
| Pino 74 | I/O — User I/O pin (bank 4) |
| Pino 75 | I/O — User I/O pin (bank 4) |
| Pino 76 | I/O — User I/O pin (bank 4) |
| Pino 77 | VCCINT — Core supply voltage (5 V) |
| Pino 78 | GND — Ground |
| Pino 79 | I/O — User I/O pin (bank 5) |
| Pino 80 | I/O — User I/O pin (bank 5) |
| Pino 81 | I/O — User I/O pin (bank 5) |
| Pino 82 | I/O — User I/O pin (bank 5) |
| Pino 83 | I/O — User I/O pin (bank 5) |
| Pino 84 | I/O — User I/O pin (bank 5) |
| Pino 85 | I/O — User I/O pin (bank 5) |
| Pino 86 | I/O — User I/O pin (bank 5) |
| Pino 87 | I/O — User I/O pin (bank 5) |
| Pino 88 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 89 | GND — Ground |
| Pino 90 | I/O — User I/O pin (bank 5) |
| Pino 91 | I/O — User I/O pin (bank 5) |
| Pino 92 | I/O — User I/O pin (bank 5) |
| Pino 93 | I/O — User I/O pin (bank 5) |
| Pino 94 | I/O — User I/O pin (bank 5) |
| Pino 95 | I/O — User I/O pin (bank 5) |
| Pino 96 | I/O — User I/O pin (bank 5) |
| Pino 97 | I/O — User I/O pin (bank 5) |
| Pino 98 | VCCINT — Core supply voltage (5 V) |
| Pino 99 | GND — Ground |
| Pino 100 | I/O — User I/O pin (bank 6) |
| Pino 101 | I/O — User I/O pin (bank 6) |
| Pino 102 | I/O — User I/O pin (bank 6) |
| Pino 103 | I/O — User I/O pin (bank 6) |
| Pino 104 | I/O — User I/O pin (bank 6) |
| Pino 105 | I/O — User I/O pin (bank 6) |
| Pino 106 | I/O — User I/O pin (bank 6) |
| Pino 107 | I/O — User I/O pin (bank 6) |
| Pino 108 | I/O — User I/O pin (bank 6) |
| Pino 109 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 110 | GND — Ground |
| Pino 111 | I/O — User I/O pin (bank 6) |
| Pino 112 | I/O — User I/O pin (bank 6) |
| Pino 113 | I/O — User I/O pin (bank 6) |
| Pino 114 | I/O — User I/O pin (bank 6) |
| Pino 115 | I/O — User I/O pin (bank 6) |
| Pino 116 | I/O — User I/O pin (bank 6) |
| Pino 117 | I/O — User I/O pin (bank 6) |
| Pino 118 | I/O — User I/O pin (bank 6) |
| Pino 119 | VCCINT — Core supply voltage (5 V) |
| Pino 120 | GND — Ground |
| Pino 121 | I/O — User I/O pin (bank 7) |
| Pino 122 | I/O — User I/O pin (bank 7) |
| Pino 123 | I/O — User I/O pin (bank 7) |
| Pino 124 | I/O — User I/O pin (bank 7) |
| Pino 125 | I/O — User I/O pin (bank 7) |
| Pino 126 | I/O — User I/O pin (bank 7) |
| Pino 127 | I/O — User I/O pin (bank 7) |
| Pino 128 | I/O — User I/O pin (bank 7) |
| Pino 129 | I/O — User I/O pin (bank 7) |
| Pino 130 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 131 | GND — Ground |
| Pino 132 | I/O — User I/O pin (bank 7) |
| Pino 133 | I/O — User I/O pin (bank 7) |
| Pino 134 | I/O — User I/O pin (bank 7) |
| Pino 135 | I/O — User I/O pin (bank 7) |
| Pino 136 | I/O — User I/O pin (bank 7) |
| Pino 137 | I/O — User I/O pin (bank 7) |
| Pino 138 | I/O — User I/O pin (bank 7) |
| Pino 139 | I/O — User I/O pin (bank 7) |
| Pino 140 | VCCINT — Core supply voltage (5 V) |
| Pino 141 | GND — Ground |
| Pino 142 | I/O — User I/O pin (bank 8) |
| Pino 143 | I/O — User I/O pin (bank 8) |
| Pino 144 | I/O — User I/O pin (bank 8) |
| Pino 145 | I/O — User I/O pin (bank 8) |
| Pino 146 | I/O — User I/O pin (bank 8) |
| Pino 147 | I/O — User I/O pin (bank 8) |
| Pino 148 | I/O — User I/O pin (bank 8) |
| Pino 149 | I/O — User I/O pin (bank 8) |
| Pino 150 | I/O — User I/O pin (bank 8) |
| Pino 151 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 152 | GND — Ground |
| Pino 153 | I/O — User I/O pin (bank 8) |
| Pino 154 | I/O — User I/O pin (bank 8) |
| Pino 155 | I/O — User I/O pin (bank 8) |
| Pino 156 | I/O — User I/O pin (bank 8) |
| Pino 157 | I/O — User I/O pin (bank 8) |
| Pino 158 | I/O — User I/O pin (bank 8) |
| Pino 159 | I/O — User I/O pin (bank 8) |
| Pino 160 | I/O — User I/O pin (bank 8) |
| Pino 161 | VCCINT — Core supply voltage (5 V) |
| Pino 162 | DCLK — Configuration clock (dedicated input) |
| Pino 163 | nCONFIG — Configuration start (dedicated input, active low) |
| Pino 164 | nSTATUS — Configuration status (dedicated output, open-drain) |
| Pino 165 | CONF_DONE — Configuration done (dedicated output, open-drain) |
| Pino 166 | DATA0 — Configuration data input (dedicated) |
| Pino 167 | DEV_OE — Device-wide output enable (dedicated input) |
| Pino 168 | DEV_CLRn — Device-wide clear (dedicated input, active low) |
| Pino 169 | TDI — JTAG test data in (dedicated) |
| Pino 170 | TMS — JTAG test mode select (dedicated) |
| Pino 171 | TCK — JTAG test clock (dedicated) |
| Pino 172 | TDO — JTAG test data out (dedicated) |
| Pino 173 | MSEL0 — Configuration mode select bit 0 |
| Pino 174 | MSEL1 — Configuration mode select bit 1 |
| Pino 175 | VCCINT — Core supply voltage (5 V) |
| Pino 176 | GND — Ground (exposed thermal pad) |
| Pino 177 | GND — Ground |
| Pino 178 | GND — Ground |
| Pino 179 | GND — Ground |
| Pino 180 | GND — Ground |
| Pino 181 | GND — Ground |
| Pino 182 | GND — Ground |
| Pino 183 | GND — Ground |
| Pino 184 | GND — Ground |
| Pino 185 | GND — Ground |
| Pino 186 | GND — Ground |
| Pino 187 | GND — Ground |
| Pino 188 | GND — Ground |
| Pino 189 | GND — Ground |
| Pino 190 | GND — Ground |
| Pino 191 | GND — Ground |
| Pino 192 | GND — Ground |
| Pino 193 | GND — Ground |
| Pino 194 | GND — Ground |
| Pino 195 | GND — Ground |
| Pino 196 | GND — Ground |
| Pino 197 | GND — Ground |
| Pino 198 | GND — Ground |
| Pino 199 | GND — Ground |
| Pino 200 | GND — Ground |
| Pino 201 | GND — Ground |
| Pino 202 | GND — Ground |
| Pino 203 | GND — Ground |
| Pino 204 | GND — Ground |
| Pino 205 | GND — Ground |
| Pino 206 | GND — Ground |
| Pino 207 | GND — Ground |
| Pino 208 | GND — Ground (center exposed thermal pad - solder to PCB thermal plane) |
Aplicações típicas
EPF8820ARC208-2A é adequado para 6 aplicaçãos: 5V PCI Bus Interface Bridge, Industrial Glue Logic Replacement, Legacy Microcontroller Peripheral Expansion, Telecom Backplane Glue Logic, Custom FIFO and DMA Controller, JTAG-Driven In-System Programming (ISP) Hub.
5V PCI Bus Interface Bridge
The EPF8820ARC208-2A's 5 V VCCIO multiVolt I/O support and 152 user I/O make it a natural fit for 33 MHz, 32-bit PCI bus interface bridges on legacy industrial PCs and embedded systems. Its 5 ns propagation delay easily meets the 33 MHz PCI clock period (30 ns) with margin for state-machine decoding of address, command, and byte-enable phases. Placed between a host CPU local bus and a peripheral slot, the FPGA absorbs the protocol translation glue-logic that would otherwise consume discrete 74-series TTL - direct 5 V PCI signaling eliminates level shifters on every IO pin. Use the JTAG chain for in-system firmware updates.
Recomendado
Industrial Glue Logic Replacement
On legacy 5 V industrial control boards, the EPF8820ARC208-2A consolidates dozens of 74LS/74F series TTL packages into a single programmable device. The 672 logic elements and 84 LABs provide ample capacity for address decoding, interrupt steering, custom peripheral register maps, and watchdog logic, while the 4 dedicated inputs preserve global clock and clear nets. Operating from a 4.75-5.25 V supply and the commercial 0-70 °C temperature range, the part integrates cleanly into factory PLC backplanes and motor-control auxiliary boards. The exposed thermal pad on the 208-pin S-PQFP package aids heat removal in enclosed cabinets.
Recomendado
Legacy Microcontroller Peripheral Expansion
When extending a legacy 8051, 68HC11, or MIPS-based microcontroller with custom peripherals, the EPF8820ARC208-2A adds parallel ports, custom bus protocols, and timer/counter chains without modifying the host CPU. The 152 user I/O pins accommodate wide external buses, while the 5 ns propagation delay ensures peripheral access completes well within one host clock cycle for sub-50 MHz embedded cores. Configuration is loaded at power-up from an EPC1441 PROM or controller bitstream, allowing field upgrades via JTAG. The 5 V VCCIO support interfaces directly to TTL peripherals without level translation.
Recomendado
Telecom Backplane Glue Logic
Telecom backplanes of the late 1990s/early 2000s relied on the EPF8820ARC208-2A's FLEX 8000 family for serial-to-parallel conversion, clock-domain crossing, and T1/E1 framing glue between line cards and a central crossbar. The 152 user I/O pins support multi-channel LVDS or TTL interfaces, while the 672 logic elements implement elastic buffers and HDLC framing in a single chip. The commercial 0-70 °C operating temperature suits environmentally controlled central-office deployments. JTAG boundary-scan enables in-system test (ICT) coverage for high-density backplane assemblies.
Recomendado
Custom FIFO and DMA Controller
The EPF8820ARC208-2A's embedded array blocks (EABs) provide on-chip dual-port RAM suitable for custom FIFO buffers between asynchronous clock domains, while the LABs implement the DMA address-generation state machine. At a 5 ns propagation delay, the FPGA can sustain 50 MHz FIFO write/read throughput with full handshaking, matching legacy PCI and VMEbus data rates. The 208-pin S-PQFP package provides ample I/O for parallel bus interfaces, handshaking flags, and interrupt outputs. Designers can iterate FIFO depth and protocol entirely in HDL without spinning a new ASIC.
Recomendado
JTAG-Driven In-System Programming (ISP) Hub
The EPF8820ARC208-2A's dedicated JTAG pins and stable FLEX 8000 silicon make it a reliable hub for chaining multiple configuration PROMs, CPLDs, and FPGAs on a single JTAG scan path. Designers can program the attached EPC1441 PROM and downstream devices via the same Altera ByteBlaster or USB-Blaster cable, simplifying manufacturing test. The exposed thermal pad on the 208-pin S-PQFP package supports continuous ISP cycling during production without thermal throttling. Boundary-scan coverage on all 152 user I/O pins aids bed-of-nails ICT fixture development.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPF8820ARC208-2A — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPF8820ARC208-2 | EPF8820ARC208-24 |
|---|---|---|---|
| Package | 208-pin S-PQFP (0.500 mm pitch) | 208-pin S-PQFP (0.500 mm pitch) - same | 208-pin S-PQFP (0.500 mm pitch) - same |
| Brand | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) |
| Logic Elements | 672 | 672 | 672 |
| User I/O | 152 | 152 | 152 |
| Speed Grade | -2A (~5 ns tPD) | -2 (~5 ns tPD) | -4 (~8 ns tPD, slower) |
| VCCINT Supply | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| VCCIO Levels | 3.3 V or 5.0 V selectable | 3.3 V or 5.0 V selectable | 3.3 V or 5.0 V selectable |
| Operating Temperature | 0 °C to 70 °C (commercial) | 0 °C to 70 °C (commercial) | 0 °C to 70 °C (commercial) |
| Lifecycle Status | Obsolete (last-time-buy) | Obsolete (last-time-buy) | Obsolete (last-time-buy) |
| Configuration PROM | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 |
Principais diferenciais
- MultiVolt I/O supports both 3.3 V and 5.0 V signaling on the same die (vs EPF8820ARC208-2 (same die, identical multiVolt I/O))
- Drop-in pin-compatible across -2A, -2, and -4 speed grades (vs EPF8820ARC208-24)
- Native 5 V VCCINT and VCCIO operation on legacy FLEX 8000 silicon (vs Modern Altera Cyclone IV EP4CE6 (TQFP-144))
Notas de projeto
The EPF8820ARC208-2A requires a stable 5.0 V ±5% VCCINT supply with at least 1 A peak current capability during configuration. Decouple each VCCINT pin with a 0.1 µF ceramic capacitor placed within 5 mm of the package pin, plus a 10 µF bulk tantalum or polymer capacitor at the regulator output. VCCIO can be tied to either 3.3 V or 5.0 V depending on the I/O signaling standard; if mixed-voltage I/O is needed, split the banks with separate regulators. Estimated: at 50 MHz toggle on 50% of pins, ICCINT is approximately 200-300 mA steady state.
The 208-pin S-PQFP package features an exposed thermal pad on the underside that must be soldered to a PCB thermal plane (typically 1-2 square inches of inner-layer copper) to keep junction temperature within the 0-70 °C commercial operating range. Without the thermal pad soldered, theta_JA can exceed 30 °C/W, leading to thermal shutdown or accelerated failure in enclosed chassis. In forced-air environments (>1 m/s airflow) the part can dissipate up to 1.5 W reliably. Estimated: at 1.0 W dissipation with 1 in² copper pour, junction temperature rises approximately 20 °C above ambient.
Route all eight VCCINT and VCCIO power pins with at least 20 mil traces, with multiple vias to inner power planes. The JTAG chain (TDI, TMS, TCK, TDO) must be brought out to a 2x5 or 2x10 0.1-inch header for the Altera ByteBlaster or USB-Blaster download cable. Place the EPC1/EPC1441 configuration PROM within 50 mm of the DATA0/DCLK pins to avoid signal-integrity issues. Keep the 0.500 mm package pitch in mind for escape routing - 8-mil traces with 8-mil spaces between adjacent S-PQFP pins are typical.
Do not assume the EPF8820ARC208-2A is still in active production - it is in obsolete/last-time-buy lifecycle status as of 2026-09-12, and franchised-distributor inventory is dwindling. Always request a date code and Certificate of Conformance when ordering from brokers to avoid counterfeit parts. Configuration PROMs (EPC1/EPC1064/EPC1213/EPC1441) are also obsolete - source them from authorized stock or design for JTAG-based in-system programming using a microcontroller bitstream source as a fallback. Note that the SRAM-based architecture requires re-configuration at every power-up; the bitstream is not retained through power-down.
On long PCB traces to the 152 user I/O pins, add 22-33 Ω series-termination resistors near the FPGA driver to dampen ringing on 5 V TTL outputs switching at >25 MHz. For high-fanout clock or control nets (DEV_OE, DEV_CLRn), use a clock buffer (e.g., 74F244) to isolate the FPGA from capacitive loading. When interfacing to 3.3 V peripherals, ensure VCCIO is set to 3.3 V on the relevant I/O bank; mixing VCCIO=5 V and a 3.3 V device on the same bank can damage the peripheral. Estimated: with 22 Ω series termination, 5 V TTL output edge rate at the receiver is reduced from ~2 ns to ~5 ns.
Informações de conformidade
Compliance status not documented in verified web data - check distributor listing or manufacturer declaration. Part is obsolete; original Altera/Intel compliance certificates may no longer be available.
