Altera

EPF8820ARC208-2A - FLEX 8000 FPGA, 672 Logic Elements, 152 I/O | Altera

MPN: EPF8820ARC208-2A ✗ Cuối đời

4.75 V to 5.25 V Vdss 208-pin S-PQFP (Shrink Plastic Quad Flat Pack) with exposed pad Package

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EPF8820ARC208-2A Tóm tắt

The Altera EPF8820ARC208-2A is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 672 logic elements (LEs), 84 logic array blocks (LABs), and 152 user I/O pins in a 208-pin Square Plastic Quad Flat Pack (S-PQFP) package with an exposed thermal pad and a 0.500 mm terminal pitch. It operates from a 4.75 V to 5.25 V supply and is rated for commercial temperature range (0 °C to 70 °C). The -2A speed grade delivers a typical propagation delay of approximately 5 ns, targeting glue-logic and bus-interface applications of the late 1990s and early 2000s.

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.

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EPF8820ARC208-2

Altera

Process Technology: 0.42 µm CMOS

Package: 208-pin RQFP / BFQFP with exposed pad

Configuration Method: SRAM - serial EPC device, parallel EPROM, or microcontroller