M4A3-32/32-7VNC

Complex Programmable Logic Devices Overview

The M4A3-32/32-7VNC is a member of the Lattice ispMACH 4A family, specifically the 3.3-V E2CMOS CPLD series. It features 32 macrocells and supports up to 32 user I/Os in a 44-pin PLCC package. The device operates at a maximum frequency (f_CNT) of 182 MHz with a propagation delay (t_PD) of 7.5 ns, corresponding to the Industrial temperature grade (-7 speed grade). It utilizes JTAG (IEEE 1149.1) for in-system programming and boundary scan testing, ensuring high routability and pin-out retention across design iterations.

Complex Programmable Logic Devices Feature Summary

• High-performance 3.3-V E2CMOS architecture with 182 MHz f_CNT and 7.5 ns t_PD
• Flexible logic architecture featuring central switch matrix and output switch matrix for 100% pin-out retention
• JTAG-compliant in-system programmability via IEEE 1149.1 interface
• Supports synchronous/asynchronous modes with D/T registers and latches

Complex Programmable Logic Devices Applications

• Complex logic replacement in industrial control systems
• Bus bridging and protocol conversion in mixed-voltage environments
• State machine implementation requiring guaranteed fixed timing
• Boundary scan test integration for automated equipment testing

Complex Programmable Logic Devices Procurement Notes

Verify the specific ordering suffix 'VNC' against official Lattice documentation to confirm package type and temperature range. Confirm end-of-life status or availability through authorized distributors, as older CPLD families may have limited supply chains. Ensure compatibility with existing design tools supporting the ispMACH 4A architecture.

Complex Programmable Logic Devices Selection Notes

Select this component when a 3.3-V supply is required alongside 5-V input tolerance. The -7 speed grade provides industrial temperature coverage suitable for harsher environments compared to commercial grades. Consider the 44-pin PLCC form factor if legacy board layouts or socketed configurations are necessary for prototyping or maintenance.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4A family, which integrates features from previous ispLSI 2000 and ispMACH 4A devices. The family offers densities from 32 to 512 macrocells. The M4A3-32 variant represents the entry-level density with a 2:1 macrocell-to-I/O ratio, providing efficient resource utilization for smaller logic designs while maintaining high-speed performance characteristics.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-32 variants with different speed grades (e.g., -5, -6) or packages. For upward migration, consider M4A3-64/32 for increased capacity. Verify that any substitute maintains the 44-pin PLCC footprint and 3.3-V operation if physical and electrical constraints are strict.