M4A3-256/128-7SAI

Complex Programmable Logic Devices Overview

The M4A3-256/128-7SAI is a Complex Programmable Logic Device (CPLD) from the ispMACH 4A family, manufactured by Lattice Semiconductor. It features 256 macrocells and supports up to 128 I/Os in an fpBGA-256 package. Operating at a 3.3 V supply voltage, it delivers a maximum propagation delay of 7.5 ns and a maximum operating frequency of 154 MHz. The device includes JTAG boundary scan compliance for testability and supports In-System Programming via IEEE 1149.1.

Complex Programmable Logic Devices Feature Summary

• High-performance E2CMOS architecture with 256 macrocells and 100% pin-out retention
• SpeedLocking technology ensures guaranteed fixed timing independent of logic complexity
• Supports mixed-voltage system designs with 3.3-V and 5-V JEDEC-compliant operations
• Includes programmable pull-up inputs, individual output slew rate control, and hot-socketing capability

Complex Programmable Logic Devices Applications

• PCI compliant interface implementations
• Mixed supply voltage system integration
• Automated test equipment connectivity via JTAG boundary scan

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free packaging availability as specified in current datasheets. Check for end-of-life notifications or discontinuance alerts prior to procurement planning.

Complex Programmable Logic Devices Selection Notes

Select this model for designs requiring high-density logic within a single CPLD without sacrificing timing predictability. The 7.5 ns speed grade suits applications needing moderate performance with extensive I/O capabilities. Ensure design tools support the ispMACH 4A architecture for optimal utilization of the central switch matrix and logic allocator features.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which offers flexible architectures ranging from 32 to 512 macrocells. The M4A3 variant specifically denotes 3.3-V operation, distinguishing it from the 5-V M4A5 series. The '256/128' designation indicates the macrocell count and primary I/O configuration options available in specific packages.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-256 variants with different speed grades (e.g., -5, -6, -10) or I/O counts. Cross-family migration to newer Lattice CPLDs may require architectural adaptation due to differences in logic density and I/O standards.