Altera

EPM7256AETC100-5N - 256-Macro MAX 7000A CPLD, 5ns TQFP-100

MPN: EPM7256AETC100-5N ⚠ Waktu Beli Terakhir

3.3 V Vdss TQFP-100 (1.0 mm pitch, 14x14 mm) Package up to 227.3 MHz Speed Internal EEPROM Memory

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EPM7256AETC100-5N Ringkasan

The Intel (formerly Altera) EPM7256AETC100-5N is a high-performance, EEPROM-based CPLD from the MAX 7000A family, delivering 256 macro cells, 84 user I/Os, and a 5.0 ns pin-to-pin delay in a 100-pin TQFP (1.0 mm pitch) commercial-grade package. It is fabricated on advanced CMOS technology, operates from a single 3.3 V supply, and is rated for 600 to 10,000 usable gates with counter speeds up to 227.3 MHz. The -5 speed grade places it among the fastest pin-to-pin timing options in the MAX 7000A series for glue-logic, bus decoding, and state-machine consolidation.

What is a CPLD? A Complex Programmable Logic Device is a non-volatile, instantly-on programmable logic IC that combines the deterministic timing of PAL/GAL architecture with higher macro-cell density and on-chip user flash. CPLDs sit above simple PLDs and below FPGAs in the programmable-logic hierarchy (PLD -> CPLD -> FPGA), and are commonly used as interface bridges, bus controllers, address decoders, and power-up sequencers because they boot in microseconds from internal EEPROM.

Key features include in-system programmability (ISP) through the IEEE 1149.1 JTAG port, multiVolt I/O supporting 2.5 V, 3.3 V, and 5.0 V mixed-voltage interfaces, an open-drain output option, programmable security bit for design protection, and a 100-pin TQFP that supports commercial (0C to 70C) ambient operation. The MAX 7000A architecture provides 16 macro cells per logic array block (LAB) with a programmable interconnect array (PIA) that guarantees fixed, predictable propagation delays regardless of routing density.

Architecturally, the device uses a classic EEPROM-based logic-block fabric with per-macro-cell flip-flops, product-term expansion, and a global interconnect that delivers the trademark deterministic timing of the MAX 7000 family. The 3.3 V core combined with multiVolt I/O banks makes it ideal for bridging legacy 5 V peripherals to modern 3.3 V processors without external level shifters.

Typical applications include PCI/ISA bus decoding, address/data demultiplexing, asynchronous-to-synchronous clock-domain bridging, glue logic for microcontroller/microprocessor systems, and power-sequencer circuits for multi-rail boards. Designers choose this part when deterministic timing, instant-on non-volatile configuration, and a mature Quartus II design flow are required.

When designing with the EPM7256AETC100-5N, allocate at least one global clock pin per high-speed logic block, place 0.1 uF decoupling capacitors within 5 mm of every supply pin, and use the JTAG chain carefully when ISP is enabled. The 100-pin TQFP has a 0.5 mm lead pitch that supports hand-soldering with practice but is best assembled by reflow.

This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the same MAX 7000A family, and practical design notes not found in the manufacturer datasheet, helping engineers select the correct speed grade and package option faster.

Alternatif penggantian untuk EPM7256AETC100-5N — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.

Variasi di dalam seri ini

Model-series yang sama yang kompatibel dengan penggantian EPM7256AETC100-5N (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, RoHS Status, Programming Interface, Maximum Operating Frequency.

EPM7128AETC100-5N

Intel

Package: 100-pin TQFP

RoHS Status: Compliant

Programming Interface: JTAG (IEEE Std. 1149.1)