MC68HC000EI12

Microprocessors Overview

The MC68HC000EI12 is a 32-bit CMOS microprocessor operating at a maximum clock frequency of 12 MHz. It features a 23-bit address bus and a 16-bit external data bus, supporting a 16-Mbyte direct addressing range. The device utilizes a fixed-point format and includes 16 32-bit data registers and 16 address registers. It supports memory-mapped I/O, seven external interrupt sources, and multiple addressing modes. The component is housed in a 68-lead plastic Quad Flat Package (QFP) with a length of 13.97 mm.

Microprocessors Feature Summary

• Supports 16-bit external data bus operations for efficient data transfer.
• Provides comprehensive exception processing including reset, interrupts, and bus errors.
• Enables flexible bus arbitration through 2-wire and 3-wire control mechanisms.
• Features low-power CMOS technology suitable for embedded applications.

Microprocessors Applications

• Industrial control systems requiring deterministic processing
• Embedded controllers with memory-mapped I/O requirements
• Systems utilizing M6800 peripheral interfaces

Microprocessors Procurement Notes

Verify the specific ordering suffix against official NXP documentation to confirm package type and temperature range. Confirm RoHS compliance status as indicated in product specifications. Ensure compatibility with existing system voltage levels and clock requirements before procurement.

Microprocessors Selection Notes

Select this processor for applications requiring a 32-bit architecture with a 16-bit external data interface. Consider the 12 MHz operational speed and QFP packaging constraints. Evaluate system needs for 16-Mbyte addressing space and interrupt handling capabilities relative to other M68000 family variants.

Microprocessors Part Context

This component belongs to the Motorola/NXP M68000 family of 8-, 16-, and 32-bit microprocessors. It shares architectural similarities with the MC68000 and MC68EC000 but is optimized for low-power operation. The device is documented in the M68000 User’s Manual, which details its instruction set, signal descriptions, and electrical characteristics.

Microprocessors Replacement Considerations

The MC68HC000 and MC68EC000 are functionally similar members of the same family. Verify pinout compatibility and electrical specifications when substituting with other M68000 series processors.

Microprocessors FAQ

What is the external data bus width of the MC68HC000EI12?

The external data bus width is 16 bits.

How many external interrupt sources does the device support?

The device supports seven external interrupt sources.

Is the MC68HC000EI12 capable of DMA operations?

The provided documentation does not specify DMA channel counts or dedicated DMA hardware for this specific part number.