M4A3-64/32-7VI48

Complex Programmable Logic Devices Overview

The M4A3-64/32-7VI48 is a member of the ispMACH 4A family, a high-performance E²CMOS Complex Programmable Logic Device (CPLD). It features 64 macrocells and supports up to 32 user I/Os. The device operates at 3.3 V with a guaranteed propagation delay (tPD) of 7 ns and a maximum frequency (fCNT) of 167 MHz. It utilizes SpeedLocking technology for fixed timing performance and includes JTAG boundary scan compliance for in-system programming and testing.

Complex Programmable Logic Devices Feature Summary

• 64 Macrocells with flexible architecture supporting D/T registers and latches
• SpeedLocking feature ensures guaranteed fixed timing independent of logic complexity
• JTAG (IEEE 1149.1) compliant for boundary scan testing and in-system programming
• PCI compliant (-5/-55/-6/-65/-7/-10/-12 speed grades)

Complex Programmable Logic Devices Applications

• High-speed interface bridging
• System control logic
• Address decoding

Complex Programmable Logic Devices Procurement Notes

Verify the package type corresponds to the VI48 suffix, which indicates a 48-pin Thin Quad Flat Pack (TQFP). Confirm the -7 speed grade matches the required 7 ns tPD specification for the target design timing constraints.

Complex Programmable Logic Devices Selection Notes

Select this component when 64 macrocells are sufficient for the design logic density. The 3.3 V operation requires compatible voltage levels. Ensure the 48-pin TQFP package fits the board layout constraints compared to other available options like PLCC or PQFP.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4A family, which offers densities from 32 to 512 macrocells. The M4A3-64/32 variant specifically provides a 2:1 macrocell-to-I/O ratio, allowing multiple macrocells to drive fewer I/O pins through an output switch matrix.

Complex Programmable Logic Devices Replacement Considerations

Other devices in the M4A3-64 series, such as M4A3-64/64, offer different I/O counts. Verify pin compatibility if substituting with other packages like PLCC or PQFP variants within the same family.