Altera

EPF8820ARI208-4H - 8K Gates FLEX 8000 PLD, 208-Pin PQFP | Altera

Name: EPF8820ARI208-4H - 8K Gates FLEX 8000 PLD, 208-Pin PQFP | Altera
Brand: Altera
SKU: EPF8820ARI208-4H

MPN: EPF8820ARI208-4H ✗ Cuối đời

4.5 V to 5.5 V (nominal 5 V) Vdss 208-pin Plastic Quad Flatpack (RQFP / PQFP), 0.5 mm pitch, gull-wing Package 125 MHz Speed

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MOQ: 1 |

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EPF8820ARI208-4H Tóm tắt

The Altera EPF8820ARI208-4H is a loadable Programmable Logic Device (PLD) from the FLEX 8000 family, delivering 8,000 usable gates, 672 logic cells, and 820 flip-flops in a 208-pin Plastic Quad Flatpack (PQFP) package with 0.5 mm terminal pitch. Built on a 0.42 micrometer CMOS process, the device operates from a 4.5 V to 5.5 V supply with a typical nominal voltage of 5 V, supports configurable I/O operation at either 3.3 V or 5 V, and is characterized for the industrial temperature grade. The architecture combines 4 dedicated inputs with 148 I/O lines (totaling 152 inputs) and propagation delay of 5.5 ns at the -4 speed grade, enabling 125 MHz operation in glue-logic, bus-interface, and state-machine roles.

What is a FLEX 8000 Programmable Logic Device? FLEX 8000 is Altera's first-generation SRAM-based PLD family, positioned hierarchically as a PLD -> programmable logic -> logic IC -> integrated circuit. It preceded modern FPGAs by combining look-up-table based logic elements with continuous interconnect, giving engineers ASIC-like density without mask costs. FLEX 8000 parts run on 5 V with 3.3 V-capable I/O, bridging legacy TTL systems and newer 3.3 V peripherals; later FPGAs (Cyclone, MAX) replaced FLEX 8000 but kept the same pin-compatible footprints for many packages, simplifying upgrades.

Key features include 8K equivalent gates, 672 logic elements, 820 flip-flops, 152 inputs (4 dedicated + 148 I/O), propagation delay of 5.5 ns, 125 MHz internal performance, in-system programmability via SRAM configuration, and JTAG support. The RQFP-208 package offers gull-wing leads suitable for surface-mount assembly on standard 0.5 mm-pitch land patterns.

Technically, FLEX 8000 uses a row-and-column interconnect fabric with embedded array blocks (EABs) for memory functions; the EPF8820 includes eight EABs of 2 Kbits each. The 4 dedicated inputs feed a fast global clock network shared across all logic elements, while 148 bidirectional I/O pins are organized in I/O banks supporting either 3.3 V or 5 V reference standards. The -4H speed grade in this MPN indicates an enhanced -4 speed bin, and the 'H' suffix denotes a specific thermal or test-screen characteristic; refer to the manufacturer datasheet for the exact 'H' definition.

Typical applications include legacy telecommunications backplanes, industrial bus bridges (PCI, VME, ISA), protocol converters, and glue-logic consolidation on 5 V motherboards. Its 5 V tolerance and 3.3 V I/O capability also make it suitable for mixed-voltage systems.

When designing with the EPF8820ARI208-4H, ensure the 5 V supply is well-decoupled near the VCC pins, keep configuration data stable at power-up, and verify JTAG chain integrity for in-field updates. The PQFP-208 footprint allows direct reuse of legacy FLEX 8000 layout patterns.

This page synthesizes current distributor pricing, drop-in same-family alternatives, and practical design notes that complement the official Altera datasheet.

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Các biến thể trong loạt này

Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPF8820ARI208-4H (cùng hình factor và footprint) — khác nhau ở Package, Process Technology, Usable Gates, Configuration Method, Speed Grade.

EPF8820ARC208-4

Altera

Process Technology: CMOS, 0.5 um (5 V SRAM-based)

Usable Gates: 8,000 (up to 16,000 with utilization)

Speed Grade: -4