EPM7256SQC208-7

Complex Programmable Logic Devices Overview

The Altera EPM7256SQC208-7N is a Complex Programmable Logic Device (CPLD) belonging to the MAX 7000S family. It features 256 macrocells, 16 logic array blocks (LABs), and up to 164 user I/O pins in a 208-pin PQFP package. The device operates at 3.3V with 5V-tolerant inputs and supports In-System Programming (ISP) via JTAG. Key electrical parameters include a maximum propagation delay of 7.5 ns, a setup time of 3.9 ns, and a counter frequency of 128.2 MHz.

Complex Programmable Logic Devices Feature Summary

• MAX 7000S architecture with 256 macrocells and 5,000 usable gates
• In-System Programming (ISP) via IEEE 1149.1 JTAG interface
• Built-in JTAG boundary-scan test circuitry for devices with 128+ macrocells
• 3.3V operation with 5V-tolerant I/O and MultiVolt capability

Complex Programmable Logic Devices Applications

• High-density logic replacement for SSI, MSI, and LSI functions
• Address decoding and bus interfacing in embedded systems
• State machine implementation and timing control circuits
• Multi-voltage system integration requiring mixed 3.3V/5V compatibility

Complex Programmable Logic Devices Procurement Notes

Verify the complete part number including the speed grade suffix (e.g., -7N). Confirm package type (PQFP-208) and voltage requirements (3.3V core, 5V tolerant I/O). Check manufacturer lifecycle status as older MAX 7000 series parts may be discontinued or have limited availability.

Complex Programmable Logic Devices Selection Notes

Select this model for designs requiring high pin counts (up to 164 I/O) and moderate speed (7.5 ns delay). Ensure the design fits within 256 macrocells and 16 LABs. Consider the -7 speed grade if propagation delays under 7.5 ns are required; faster grades like -5 or -6 offer lower delays but may have different availability.

Complex Programmable Logic Devices Part Context

This component is part of the Altera MAX 7000 family, a second-generation EEPROM-based PLD architecture. The 'S' designation indicates support for In-System Programming and JTAG boundary scan. It serves as a drop-in replacement for many standard logic families while offering reprogrammability.

Complex Programmable Logic Devices Replacement Considerations

Direct pin-compatible replacements within the same package and speed grade should be sought from the MAX 7000S family. Verify that any substitute maintains the 3.3V operating voltage and 5V I/O tolerance characteristics.