M4A3-64/32-10JI

Complex Programmable Logic Devices Overview

The M4A3-64/32-10JI is a Complex Programmable Logic Device (CPLD) from the Lattice ispMACH 4A family. It features 64 macrocells and supports 32 user I/Os with a 2:1 macrocell-to-I/O cell ratio. The device operates at a maximum frequency of 167 MHz with a typical propagation delay of 5.5 ns. It utilizes E2CMOS technology for in-system programmability via JTAG (IEEE 1149.1). Key architectural elements include a central switch matrix, dedicated input registers, and SpeedLocking performance for guaranteed fixed timing.

Complex Programmable Logic Devices Feature Summary

• High-performance E2CMOS architecture with 64 macrocells and 32 I/Os.
• SpeedLocking feature ensures fixed pin-to-pin delay independent of logic complexity.
• JTAG compliant for boundary scan testing and in-system programming.
• Flexible output switch matrix allows 100% pin-out retention during design changes.

Complex Programmable Logic Devices Applications

• PCI-compliant interface logic
• Mixed-voltage system integration
• High-speed state machine implementation

Complex Programmable Logic Devices Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and lead-free status as specified in the datasheet. Ensure handling procedures account for moisture sensitivity levels defined by the manufacturer to prevent damage during assembly.

Complex Programmable Logic Devices Selection Notes

Select this model when 64 macrocells are required with a 2:1 macrocell-to-I/O ratio. The -10 speed grade provides a 5.5 ns propagation delay suitable for high-frequency applications. Verify that the specific package option matches the board layout requirements, as the family offers multiple package types.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which bridges 3.3-V and 5-V CPLD technologies. It shares architectural similarities with other devices in the series, such as the M4A3-64/64, but differs in its specific macrocell-to-I/O configuration and routing capabilities.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include the M4A3-64/64-10JI, though it offers a different I/O configuration. Cross-family migration may require architectural adjustments due to differences in switch matrix and macrocell density.

Complex Programmable Logic Devices FAQ

What is the macrocell-to-I/O cell ratio for the M4A3-64/32?

The M4A3-64/32 has a 2:1 macrocell-to-I/O cell ratio, meaning each PAL block contains twice as many macrocells as I/O cells.

Does the device support boundary scan testing?

Yes, all ispMACH 4A devices, including the M4A3-64/32, are compliant with IEEE 1149.1 for boundary scan testability.

How does SpeedLocking affect timing?

SpeedLocking guarantees a fixed pin-to-pin delay regardless of the number of product terms used, ensuring predictable timing up to 20 product terms per output.