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M68060/D

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Product Brief

Superscalar 32-Bit Microprocessors

MC68060

MC68LC060

MC68EC060

© MOTOROLA, 1994

Microprocessor and Memory

Technologies Group

SEMICONDUCTOR PRODUCT INFORMATION

The superscalar M68060 represents a new line of Motorola microprocessor products. The first generation of the

M68060 product line consists of the MC68060, MC68LC060, and MC68EC060. All three microprocessors offer

superscalar integer performance of over 100 MIPS at 66 MHz. The MC68060 comes fully equipped with both a

floating-point unit (FPU) and a memory management unit (MMU) for high-performance embedded control and

desktop applications. For cost-sensitive embedded control and desktop applications where an MMU is required,

but the additional cost of a FPU is not justified, the MC68LC060 offers high performance at a low cost.

Specifically designed for low-cost embedded control applications, the MC68EC060 eliminates both the FPU and

MMU, permitting designers to leverage MC68060 performance while avoiding the cost of unnecessary features.

Throughout this product brief, all references to the MC68060 also refer to the MC68LC060 and the

MC68EC060, unless otherwise noted. Figure 1 illustrates a block diagram of the MC68060.

Figure 1. MC68060 Block Diagram

EXECUTION UNIT

INSTRUCTION

ATC

INSTRUCTION

CACHE

CONTROLLER

DATA

ATC

DATA

CACHE

CONTROLLER

OPERAND DATA BUS

INSTRUCTION

CACHE

DATA

CACHE

FLOATING-

POINT

UNIT

B

U

S

C

O

N

T

R

O

L

L

E

R

ADDRESS

DATA

INTEGER UNIT

DECODE

DATA AVAILABLE

EA

FETCH

INT

EXECUTE

INSTRUCTION FETCH UNIT

BRANCH

CACHE

INSTRUCTION

FETCH

EARLY

DECODE

INSTRUCTION

BUFFER

EA

CALCULATE

DECODE

EA

FETCH

INT

EXECUTE

EA

FETCH

WRITE-BACK

CONTROL

IA

CALCULATE

EA

CALCULATE

INSTRUCTION MEMORY UNIT

DATA MEMORY UNIT

FP

EXECUTE

pOEP

sOEP

OC

OC

OC

EX

EX

EX

AG

AG

DS

DS

DA

WB

IB

IED

IC

IAG

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com