EPM3256ATC144-10N

Complex Programmable Logic Devices Overview

The Altera EPM3256ATC144-10N 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) package. The device operates at a supply voltage of 3.3 V with a maximum pin-to-pin propagation delay of 7.5 ns and a counter frequency of 126.6 MHz. It utilizes CMOS EEPROM technology for non-volatile configuration, supporting in-system programming via IEEE Std. 1149.1 JTAG interfaces.

Complex Programmable Logic Devices Feature Summary

• High-performance architecture with 7.5 ns pin-to-pin logic delays and 126.6 MHz counter speeds.
• MultiVolt I/O interface allowing compatibility with 5.0-V, 3.3-V, and 2.5-V logic levels while the core runs at 3.3 V.
• Supports in-system programming (ISP) through IEEE Std. 1149.1 JTAG and IEEE Std. 1532 compliance.
• Includes built-in boundary-scan test circuitry compliant with IEEE Std. 1149.1-1990.

Complex Programmable Logic Devices Applications

• GPIB controller implementation for test and measurement instruments
• PCI bus compatible interface cards
• Mixed-voltage system integration

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity as this part number may be subject to obsolescence or end-of-life status. Confirm that the specific ordering suffix corresponds to the required temperature range and package variant. Ensure design files are compatible with the MAX 3000A family specifications before procurement.

Complex Programmable Logic Devices Selection Notes

Select this device when designs require 256 macrocells and high-density I/O in a TQFP package. The -10 speed grade offers 7.5 ns delay suitable for moderate-speed applications. Consider the MultiVolt capability if interfacing with 5V legacy systems. Verify that the 16 LAB structure meets the routing requirements for complex logic functions.

Complex Programmable Logic Devices Part Context

This component is part of the Altera MAX 3000A series, which bridges the gap between simple PLDs and high-end FPGAs. The EPM3256A variant specifically targets applications needing higher density than the EPM3128A but lower complexity than the EPM3512A. It is designed for rapid prototyping and field upgrades using ISP capabilities.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other EPM3256A variants with different speed grades or packages, such as EPM3256ATC100-10N. Cross-family migration to newer Intel/Altera CPLD families requires architectural redesign due to differences in logic block structures and I/O configurations.

Complex Programmable Logic Devices FAQ

What is the maximum operating frequency for counters in the EPM3256ATC100-10N?

The maximum counter frequency is 126.6 MHz.

How many Logic Array Blocks (LABs) does the EPM3256A contain?

The EPM3256A contains 16 Logic Array Blocks (LABs).

Is the EPM3256ATC144-10N compatible with 5V inputs?

Yes, the MultiVolt I/O interface allows all input pins to be 5.0-V tolerant.