EPM7256BTC144-10

Complex Programmable Logic Devices Overview

The Altera EPM7256BTC144-10 is a Complex Programmable Logic Device (CPLD) belonging to the MAX 7000B family. It features 256 macrocells organized into 16 Logic Array Blocks (LABs) and provides up to 164 user I/O pins in a 144-pin TQFP package. The device operates on a 2.5-V supply voltage with MultiVolt I/O compatibility for 3.3-V, 2.5-V, and 1.8-V logic levels. Key electrical parameters include a maximum pin-to-pin delay of 5.0 ns and a counter frequency of 188.7 MHz. It supports in-system programming via an IEEE Std. 1149.1 JTAG interface.

Complex Programmable Logic Devices Feature Summary

• High-performance 2.5-V CMOS EEPROM-based architecture with 5.0 ns pin-to-pin delays.
• MultiVolt I/O interface supporting 3.3-V, 2.5-V, and 1.8-V logic levels.
• Advanced 2.5-V in-system programmability (ISP) through a built-in JTAG interface.
• Configurable expander product terms allowing up to 32 product terms per macrocell.

Complex Programmable Logic Devices Applications

• Mixed-voltage system integration requiring 2.5 V core and 3.3 V I/O compatibility.
• PCI-compatible designs utilizing advanced I/O standards like SSTL-2 and GTL+.
• Applications requiring high-density SSI, MSI, or LSI logic function integration.

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity by checking the manufacturer marking against official datasheet specifications. Confirm the package type matches the 144-pin TQFP requirement. Ensure that the specific speed grade corresponds to the required timing constraints for the target application design.

Complex Programmable Logic Devices Selection Notes

Select this model when a 2.5-V operating voltage is required alongside 3.3-V I/O tolerance. The EPM7256BTC144-10 offers 256 macrocells and 164 I/O pins, suitable for designs needing moderate density. Consider the 5.0 ns delay specification for timing-critical paths within the logic array blocks.

Complex Programmable Logic Devices Part Context

This component is part of the Altera MAX 7000B family, which utilizes second-generation Multiple Array MatriX (MAX) architecture. The family includes devices ranging from 600 to 10,000 usable gates, offering pin-compatibility with the 5.0-V MAX 7000S and 3.3-V MAX 7000A families for migration purposes.

Complex Programmable Logic Devices Replacement Considerations

The EPM7256B series devices are pin-compatible with other MAX 7000B variants in the same package. Designers may migrate between densities using SameFrame pin-out features available in FineLine BGA packages, though direct substitution requires verifying voltage and speed grade compatibility.