EPM7256AETC144-5

Complex Programmable Logic Devices Overview

The Altera EPM7256AETC144-5 is a Complex Programmable Logic Device (CPLD) belonging to the MAX 7000A family. It features 256 macrocells organized into 16 Logic Array Blocks (LABs), providing approximately 5,000 usable gates. The device operates on a 3.3V supply voltage with a range of 3.0V to 3.6V and supports System In-Programmability (SIP). Housed in a 144-pin Thin Quad Flat Package (TQFP), it offers 36 user I/O pins. Key electrical parameters include a maximum propagation delay of 5.5 ns and a maximum operating frequency of 172.4 MHz.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells across 16 LABs for flexible logic implementation
• EEPROM non-volatile memory technology for instant power-up operation
• System In-Programmability (SIP) capability via JTAG interface
• High-speed performance with 5.5 ns max propagation delay

Complex Programmable Logic Devices Applications

• Address decoding and bus bridging in embedded systems
• State machine implementation for industrial control
• Interface translation between different voltage domains
• Replacement for discrete gate logic in compact designs

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity due to the discontinued status of this part number. Confirm RoHS compliance requirements as original manufacturing batches may not meet current environmental standards. Check for moisture sensitivity level (MSL 3) handling precautions during storage and assembly. Ensure design files are compatible with legacy development tools if migrating from older projects.

Complex Programmable Logic Devices Selection Notes

Select this model when 256 macrocells are sufficient for the target logic density. The TQFP-144 package is suitable for surface-mount applications requiring moderate pin counts. Compare against the EPM7256AETC144-10 variant if lower speed requirements allow for cost optimization or availability improvements. Verify that the 3.3V I/O levels match the connected system interfaces.

Complex Programmable Logic Devices Part Context

This component is part of the Intel (formerly Altera) MAX 7000A series, designed for high-density, high-performance CPLD applications. It succeeded earlier MAX 7000 variants with improved speed grades and packaging options. The EPM7256AETC144-5 specifically targets designs needing reliable, non-volatile programmable logic without the complexity of SRAM-based FPGAs.

Complex Programmable Logic Devices Replacement Considerations

Direct functional substitutes within the same package and speed grade are limited due to discontinuation. Consider the EPM7256AETC144-10 for slower applications where availability might differ. For new designs, evaluate modern Intel MAX 10 or Cyclone V devices, though these require significant schematic and firmware redesign.