EPM7256BTC144-7N

Complex Programmable Logic Devices Overview

The Altera EPM7256BTC144-7N is a high-performance, 2.5-V CMOS EEPROM-based programmable logic device (PLD) belonging to the MAX 7000B family. It utilizes the second-generation Multiple Array MatriX (MAX) architecture and contains 256 macrocells organized into 16 Logic Array Blocks (LABs). The device offers 5,000 usable gates and supports up to 164 user I/O pins in its 144-pin TQFP package. Key electrical parameters include a maximum pin-to-pin propagation delay of 5.0 ns and a counter frequency capability exceeding 188.7 MHz.

Complex Programmable Logic Devices Feature Summary

• Advanced 2.5-V In-System Programmability (ISP) via IEEE Std. 1149.1 JTAG interface with enhanced algorithms and ISP_Done bit.
• MultiVolt I/O interface allowing core operation at 2.5 V while supporting 3.3-V, 2.5-V, and 1.8-V logic levels.
• High-speed performance with 5.0 ns pin-to-pin delays and 188.7 MHz counter frequencies.
• Configurable expander product terms providing up to 32 product terms per macrocell for complex logic synthesis.

Complex Programmable Logic Devices Applications

• Communication systems requiring high-density logic integration.
• Industrial control applications utilizing mixed-voltage interfaces.
• Test equipment and instrumentation logic functions.
• PCI-compatible system designs.

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix (-7) against the manufacturer's current availability list, as speed grades may vary by production batch. Confirm that the 144-pin TQFP package option remains supported for this part number, as package availability can change over time. Ensure programming hardware compatibility with the IEEE Std. 1149.1 JTAG interface for in-system programming.

Complex Programmable Logic Devices Selection Notes

Select this device when a 2.5-V supply voltage is required alongside MultiVolt I/O compatibility for mixed-voltage systems. The EPM7256BTC144-7N is suitable for designs needing 256 macrocells and up to 164 I/O pins. Consider the -7 speed grade if a 5.0 ns maximum propagation delay meets timing requirements. Verify pin-count constraints against the 144-pin TQFP footprint.

Complex Programmable Logic Devices Part Context

This component is part of the MAX 7000B family, which serves as a successor to the 5.0-V MAX 7000S and 3.3-V MAX 7000A families. It shares pin compatibility with these related series within the same package types, facilitating design migration. The MAX 7000B family represents Altera's second-generation MAX architecture optimized for lower voltage operation and higher density.

Complex Programmable Logic Devices Replacement Considerations

Pin-compatible replacements within the same package include other MAX 7000B devices such as the EPM7128B or EPM7512B, depending on logic density needs. Cross-family migration to MAX 7000S or MAX 7000A is possible due to pin compatibility, though voltage levels differ.