EPM3256ATC144-7N

Complex Programmable Logic Devices Overview

The Altera EPM3256ATC144-7N is a Complex Programmable Logic Device (CPLD) belonging to the MAX 3000A family. It features 256 macrocells organized into 16 Logic Array Blocks (LABs) and provides up to 161 user I/O pins in a 144-pin Thin Quad Flat Pack (TQFP). The device utilizes CMOS EEPROM technology, operates at a 3.3 V supply voltage, and supports In-System Programming (ISP) via the IEEE Std. 1149.1 JTAG interface. Key electrical parameters include a maximum propagation delay of 7.5 ns, a setup time of 5.2 ns, and a counter frequency of 126.6 MHz.

Complex Programmable Logic Devices Feature Summary

• EEPROM-based architecture with 256 macrocells and 5,000 usable gates.
• In-System Programmability (ISP) compliant with IEEE Std. 1149.1 and IEEE Std. 1532.
• MultiVolt I/O interface supporting 5.0-V, 3.3-V, and 2.5-V logic levels.
• Programmable interconnect array (PIA) for predictable routing delays.

Complex Programmable Logic Devices Applications

• PCI Local Bus compatible logic functions.
• Mixed-voltage system interfacing.
• Replacement for PALs, GALs, and legacy PLDs.

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment prior to installation. Ensure design compatibility with existing PCB footprints and power supply requirements.

Complex Programmable Logic Devices Selection Notes

Select this model for designs requiring 256 macrocells and high-density I/O in a TQFP package. Consider the 7.5 ns speed grade for timing constraints. Evaluate alternative speed grades (-4, -5, -6, -10) if performance requirements differ from the specified 7.5 ns delay.

Complex Programmable Logic Devices Part Context

This component is part of the Altera MAX 3000A family, which offers low-cost, high-performance programmable logic solutions. The family ranges from 600 to 10,000 usable gates, providing scalability for various application densities while maintaining consistent architectural features across devices.

Complex Programmable Logic Devices Replacement Considerations

Compatible replacements within the same family include EPM3256ATC144-5N and EPM3256ATC144-10N, differing primarily in speed grades. Verify pinout and electrical specifications when substituting with other CPLD families.