EPM7256ERI208-20

Complex Programmable Logic Devices Overview

The Altera EPM7256ERI208-20 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 5.0 V with a maximum propagation delay of 20 ns and a counter frequency of 90.9 MHz. Key architectural features include EEPROM-based non-volatile storage, In-System Programmability (ISP) via JTAG, and MultiVolt I/O capability for interfacing with both 3.3-V and 5.0-V systems.

Complex Programmable Logic Devices Feature Summary

• MAX 7000S architecture with 256 macrocells and 5,000 usable gates
• In-System Programmability (ISP) via IEEE Std. 1149.1 JTAG interface
• MultiVolt I/O supporting 3.3-V or 5.0-V operation
• Built-in JTAG boundary-scan test (BST) circuitry

Complex Programmable Logic Devices Applications

• PCI-compliant system designs
• Mixed-voltage digital logic integration
• High-density gate replacement applications

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated on official datasheets. Ensure handling procedures account for moisture sensitivity levels specified in the package documentation.

Complex Programmable Logic Devices Selection Notes

Select this model for designs requiring 5.0 V operation with ISP capabilities. Compare against MAX 7000E devices if JTAG BST or ISP functionality is not required. Verify that the 20-ns speed grade meets timing constraints for target clock frequencies.

Complex Programmable Logic Devices Part Context

This component is part of the Altera MAX 7000 family, which utilizes second-generation MAX architecture. The MAX 7000S variant specifically adds JTAG-based ISP and BST features compared to the standard MAX 7000E series, while maintaining pin compatibility with lower-voltage MAX 7000A and MAX 7000B devices.

Complex Programmable Logic Devices Replacement Considerations

Direct functional substitutes within the same density and package are limited due to the specific -20 speed grade. Consider EPM7256S variants with different speed grades (e.g., -10, -12) if timing requirements allow, ensuring voltage and I/O counts remain compatible.