Altera

EPM7256SRC208-15N - MAX 7000S CPLD 256 Macro | Altera

Name: EPM7256SRC208-15N - MAX 7000S CPLD 256 Macro | Altera
Brand: Altera
SKU: EPM7256SRC208-15N

MPN: EPM7256SRC208-15N ✗ Cuối đời

5 V Vdss 208-pin RQFP (PowerQuad Flat Pack) Package 76.9 MHz Speed EEPROM (non-volatile) Memory

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EPM7256SRC208-15N Tóm tắt

The Altera EPM7256SRC208-15N is a MAX 7000S-series Complex Programmable Logic Device (CPLD) with 256 macrocells, 164 user I/O pins, and a 15 ns pin-to-pin propagation delay, housed in a 208-pin RQFP (PowerQuad Flat Pack) package. It operates from a 5 V supply and delivers 5,000 usable gates of EEPROM-based programmable logic.

A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines multiple logic blocks, macrocells, and a programmable interconnect array on a single die. CPLDs sit between simple PAL/GAL devices and full FPGAs in the programmable logic hierarchy: they offer non-volatile configuration, deterministic timing, and instant-on operation, making them ideal for glue logic, bus interfacing, and state machines. The MAX 7000S family is built on Altera's second-generation MAX architecture using EEPROM cells, so configuration is retained without an external boot device.

Key features of the EPM7256SRC208-15N include 256 macrocells organized into 16 logic array blocks (LABs), 164 I/O pins, 5,000 usable gates, and a maximum counter frequency of 76.9 MHz. The 15 ns pin-to-pin delay provides predictable, fixed timing without the routing-dependent variability of SRAM-based FPGAs. The device supports in-system programmability (ISP) via the IEEE 1149.1 JTAG interface, allowing field upgrades without removing the part from the board.

The MAX 7000S architecture uses a programmable interconnect array (PIA) to route signals between LABs, giving deterministic propagation delays. Each macrocell contains a flip-flop with independent clock, clear, and preset controls, plus product-term logic for combinatorial functions. The EEPROM process provides high noise immunity and 5 V TTL/CMOS-compatible I/O, simplifying interfacing to legacy 5 V logic.

Typical applications include PCI bus glue logic, ISA/PC-104 interface controllers, industrial automation state machines, telecommunications line-card control, test-and-measurement instrumentation, and legacy system replacement where 5 V logic and non-volatile configuration are required.

When designing with this CPLD, ensure the 5 V supply is well decoupled with 0.1 uF ceramic capacitors on every VCC pin, and reserve the JTAG pins for in-system programming. The 208-pin RQFP package requires careful thermal and signal-integrity layout for the 164 I/O pins.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection, replacement, and layout decisions.

Bộ thay thế dễ dàng lắp đặt cho EPM7256SRC208-15N — 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 EPM7256SRC208-15N (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Operating Temperature, Pin-to-Pin Delay (tPD), Speed Grade.

EPM7256SQC208-10

Intel

Package: 208-pin PQFP (SQC208)