EPM7256EQC160-20 | Altera High-Performance CPLD | 256 Macrocells, 132 I/O
The EPM7256EQC160-20 is a flagship Complex Programmable Logic Device (CPLD) from Altera (now Intel), designed for high-speed, low-latency applications. With a maximum propagation delay of 20ns and operating voltage of 4.75V 5.25V, this EE PLD delivers reliable performance in industrial and commercial environments. Its 256 macrocells and 5,000-gate capacity enable complex logic implementations, while the 132 I/O pins ensure seamless peripheral integration. Packaged in a space-efficient 160-PQFP (28x28mm), it supports surface-mount assembly for cost-effective production. Engineers favor this device for its reprogrammability, making it ideal for prototyping and field upgrades.
At the core of the EPM7256EQC160-20 are 16 logic blocks, each configurable for combinational or sequential operations. The device operates within a 0 C to 70 C temperature range, ensuring stability in diverse conditions. Its 160-BQFP package enhances thermal dissipation, critical for sustained performance in high-duty-cycle applications. Key specifications include a 5V internal supply voltage, compatible with legacy TTL systems, and an electrically erasable (EE) architecture that allows 100+ programming cycles. These features position it as a versatile solution for bridging logic, protocol conversion, and real-time control tasks.
The EPM7256EQC160-20 excels in communication infrastructure, where its 20ns latency enables precise timing for data transmission and signal conditioning. Industrial applications leverage its robustness for PLC interfaces and motor control, while consumer electronics utilize its flexibility for custom logic in printers and displays. In DSP systems, it performs glue logic for ADCs/DACs, reducing BOM complexity. Its macrocell-rich design supports state machines, counters, and address decoders, making it a preferred alternative to discrete logic ICs.
Notable features include JTAG programming support for in-system updates, reducing downtime during development. The device s 5000-gate equivalency allows it to replace multiple SSI/MSI chips, streamlining PCB layout. Designers benefit from Altera s Quartus II software for HDL synthesis and simulation. Compared to FPGAs, this CPLD offers deterministic timing and instant-on operation critical for power-up sequencing and safety-critical systems. Its 132 I/Os support LVCMOS/LVTTL levels, ensuring compatibility with modern microcontrollers and sensors.
For engineers seeking a balance between flexibility and performance, the EPM7256EQC160-20 remains a top-tier CPLD choice. Its blend of high-speed logic (20ns tpd), ample resources (256 macrocells), and industrial-grade packaging addresses challenges from automotive control modules to telecom routing systems. Legacy system upgrades particularly benefit from its 5V tolerance and reprogrammability. With Altera s proven reliability and Intel s ongoing support, this device continues to empower embedded designs requiring fast, reconfigurable logic without the overhead of FPGA complexity.
