MC68LC040FE20A

Microprocessors Overview

The MC68LC040FE20A is a 32-bit microprocessor from the Motorola 68000 family, operating at a maximum clock frequency of 20 MHz. It utilizes a ceramic PGA-68 package and features a Harvard architecture with separate 4KB instruction and data caches. The device integrates an integer core and a memory management unit (MMU) but excludes the floating-point unit found in the standard MC68040.

Microprocessors Feature Summary

• Harvard architecture with independent instruction and data cache paths
• Integrated memory management unit for address translation
• Integer-only processing core optimized for embedded control

Microprocessors Applications

• Industrial controllers requiring real-time response
• Communication protocol stack processing
• Embedded systems prioritizing cost efficiency over floating-point performance

Microprocessors Procurement Notes

Verify the specific suffix FE20A against official Motorola or NXP documentation to confirm the exact speed grade and package variant. Ensure compatibility with existing system designs that rely on the 68000 instruction set architecture. Confirm that the absence of a hardware FPU aligns with the application's computational requirements.

Microprocessors Selection Notes

Select this component when a full MC68040 is unnecessary due to low floating-point demand. It offers a balance of high-speed integer processing and reduced system complexity compared to the standard model. Suitable for designs where the MMU is required but FPU overhead must be eliminated.

Microprocessors Part Context

This processor belongs to the MC68040 family, specifically the LC (Low Cost/Integer Core) derivative. It retains the core architectural benefits of the 68040 while removing the FPU to reduce cost and power consumption. It maintains binary compatibility with the broader 68000 software ecosystem.

Microprocessors Replacement Considerations

The MC68040 serves as a functional substitute if floating-point capabilities are needed. For lower speeds, variants such as the MC68LC040FE16A may be considered. Verify pinout and voltage compatibility before swapping.