M4A3-64/32-55JNC

Complex Programmable Logic Devices Overview

The M4A3-64/32-55JNC is a 3.3-V ispMACH 4A Complex Programmable Logic Device (CPLD) from Lattice Semiconductor. It features 64 macrocells and supports up to 32 user I/Os. The device operates at a commercial speed grade of -55, characterized by a propagation delay ($t_{PD}$) of 5.5 ns, output-to-strobe time ($t_{COS}$) of 4.0 ns, and setup time ($t_{SS}$) of 3.5 ns. It achieves a maximum count frequency ($f_{CNT}$) of 167 MHz. Static power consumption is specified at 25 mA. The component includes JTAG boundary scan compliance for testing and in-system programming capabilities.

Complex Programmable Logic Devices Feature Summary

• High-performance E2CMOS architecture with guaranteed fixed timing via SpeedLocking feature
• Flexible logic allocation supporting synchronous/asynchronous modes and D/T registers
• 100% pin-out retention and First-Time-Fit capability through central switch matrix routing
• Supports mixed-voltage system designs with 5-V tolerant inputs on 3.3-V devices

Complex Programmable Logic Devices Applications

• PCI compliant interface design
• Mixed supply voltage system integration
• Automated test equipment connectivity via JTAG boundary scan
• General-purpose programmable logic replacement

Complex Programmable Logic Devices Procurement Notes

Verify the package type corresponding to the 'JNC' suffix against official datasheet tables, as the provided source text lists package options generally but does not explicitly map specific alphanumeric suffixes to physical packages. Confirm that the -55 speed grade aligns with the required 5.5 ns $t_{PD}$ specification for the target application timing constraints.

Complex Programmable Logic Devices Selection Notes

Select this model when 64 macrocells are sufficient for the logic density requirements. The -55 speed grade provides a 5.5 ns delay suitable for moderate-speed digital control applications. Ensure the design utilizes the 3.3-V core voltage while leveraging the 5-V tolerant I/Os if interfacing with legacy 5-V components.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which offers densities ranging from 32 to 512 macrocells. The M4A3-64/32 variant specifically denotes a 64-macrocell device with a 2:1 macrocell-to-I/O cell ratio, allowing flexible routing between internal logic blocks and external pins.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-64 variants with different speed grades (e.g., -5, -6, -65) or I/O configurations (e.g., M4A3-64/64). Cross-family migration to ispMACH 4V or MachXO series requires architectural redesign due to differences in logic structure and I/O capabilities.