EPM7256AETC144-10N

Complex Programmable Logic Devices Overview

The Altera EPM7256AETC144-10N 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 supports System In-Programmability (SIP) via EEPROM technology and includes JTAG boundary scan capabilities. It operates within a supply voltage range of 3.0V to 3.6V and offers a maximum propagation delay of 10ns. The component is housed in a 144-pin Thin Quad Flat Package (TQFP) with dimensions of 20x20mm.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells and 16 LABs for complex logic implementation
• System In-Programmability (SIP) with non-volatile EEPROM storage
• JTAG interface for boundary scan testing and programming
• 144-pin TQFP package with 120 I/O pins

Complex Programmable Logic Devices Applications

• Intelligent manufacturing fixtures requiring sequence judgment and alert functions
• Electromagnetic compatibility enhancement in electronic product assembly
• Complex address decoding and bus interface logic
• State machine and timing control circuits in embedded systems

Complex Programmable Logic Devices Procurement Notes

This component is designated as End-of-Life (EOL) by the manufacturer, with official discontinuation notices recorded in December 2020. Verification of current availability requires checking secondary market distributors or surplus suppliers, as standard production channels no longer stock this part. Buyers should confirm lot dates and RoHS compliance status, as original versions may not meet current environmental regulations.

Complex Programmable Logic Devices Selection Notes

Select the EPM7256AETC144-10N when a robust CPLD with high I/O count (120 pins) and moderate logic density (256 macrocells) is required. The 10ns speed grade suits applications operating up to approximately 95MHz. Ensure the design accommodates the 3.3V power domain and utilizes the JTAG interface for reliable field updates. Consider pin-compatible alternatives only if the specific 144-TQFP footprint and macrocell architecture are mandatory.

Complex Programmable Logic Devices Part Context

As part of the MAX 7000A series, this CPLD bridges the gap between simple gate arrays and microprocessors. It is widely recognized for its reliability in industrial environments due to its EEPROM-based configuration memory, which retains data without power. The 'A' suffix denotes the enhanced version of the original MAX 7000 family, offering improved performance and additional features like JTAG support compared to earlier generations.

Complex Programmable Logic Devices Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Due to the EOL status, replacement strategies typically involve redesigning with modern Intel/Altera MAX 10 or Agilex families, or sourcing obsolete inventory from authorized surplus dealers.