Microprocessors and Microcomputer-Based System Design, 2nd Edition

7

MOTOROLA MC68030/MC68040, INTEL 80486 AND PENTIUM MICROPROCESSORS

This chapter describes the basic features of the Motorola 68030/68040, the Intel 80486, and the Pentium microprocessors.

7.1    Motorola MC68030

The MC68030 is a virtual memory microprocessor based on an MC68020 core with additional features. The MC68030 is designed by using HCMOS technology and can be operated at 16.67-, 20-, and 33-MHz clocks.

The MC68030 contains all features of the MC68020, plus some additional features. The basic differences between the MC68020 and MC68030 are listed below:

Characteristics	MC68020	MC68030
On-chip cache	256-byte instruction cache	256-bytc instruction cache and 256-byte data cache
On-chip Memory Management Unit (MMU)	None	Paged ...