M4A5-64/32-12VI48

Complex Programmable Logic Devices Overview

The M4A5-64/32-12VI48 is a 5-V ispMACH 4A Complex Programmable Logic Device (CPLD) from Lattice Semiconductor. It features 64 macrocells and supports up to 32 user I/Os in a 48-pin TQFP package. The device operates with a maximum propagation delay of 12 ns and a counter frequency of 182 MHz. It utilizes E²CMOS technology for high performance and low power consumption, supporting both commercial and industrial temperature ranges.

Complex Programmable Logic Devices Feature Summary

• High-performance E²CMOS architecture with guaranteed fixed timing via SpeedLocking feature
• Flexible logic design with First-Time-Fit and 100% pin-out retention capabilities
• Supports JTAG (IEEE 1149.1) boundary scan testing and in-system programming
• PCI compliant with programmable pull-up or Bus-Friendly inputs

Complex Programmable Logic Devices Applications

• PCI bus interface designs
• Mixed supply voltage system integration
• High-speed logic replacement
• Automated test equipment connectivity

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix (-12) matches the required 12 ns propagation delay for your application timing constraints. Confirm that the V48 package designation corresponds to the 48-pin Thin Quad Flat Pack (TQFP) form factor required by your PCB layout. Ensure the 'I' suffix indicates the Industrial temperature range if operating outside standard commercial limits.

Complex Programmable Logic Devices Selection Notes

Select this model when a 5-V supply is required for the CPLD core and I/Os. The M4A5-64 variant provides sufficient macrocell density for moderate complexity logic while maintaining a compact 48-pin footprint. Consider the -12 speed grade only if the 12 ns delay meets system requirements, as faster grades like -5 or -7 offer lower latency.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which offers densities ranging from 32 to 512 macrocells. The M4A5 series specifically denotes 5-V operation, distinct from the 3.3-V M4A3 series. The family is characterized by its flexible architecture, allowing designers to achieve high utilization rates and predictable timing across various package options.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A5-64 variants with different speed grades (e.g., M4A5-64/32-5VI48) or package types. For upward compatibility, higher-density devices like the M4A5-96 or M4A5-128 may be considered if additional macrocells are needed, provided pinout retention or redesign efforts are acceptable.