MC68060RC50 Datasheet, PDF (1/10 Pages) Freescale Semiconductor, Inc – Superscalar 32-Bit Microprocessors

Freescale Semiconductor, Inc.
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M68060/D
Microprocessor and Memory
Technologies Group
MC68060
MC68LC060
MC68EC060
Product Brief
Superscalar 32-Bit Microprocessors
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.
EXECUTION UNIT
INSTRUCTION FETCH UNIT
BRANCH
CACHE
IA
IAG
CALCULATE
INSTRUCTION IC
FETCH
EARLY ^IED
DECODE
FLOATING-
POINT
UNIT
EA
OC
FETCH
FP
EX
EXECUTE
INSTRUCTION
IB
BUFFER
pOEP
sOEP
DECODE ^DS
DECODE ^DS
EA
AG
CALCULATE
EA
OC
FETCH
INT
EX
EXECUTE
EA
AG
CALCULATE
EA
OC
FETCH
INT
EX
EXECUTE
INTEGER UNIT
DATA AVAILABLE
DA
WRITE-BACK
WB
INSTRUCTION
ATC
INSTRUCTION
CACHE
INSTRUCTION
CACHE
CONTROLLER
INSTRUCTION MEMORY UNIT
DATA
CACHE
CONTROLLER
DATA
ATC
DATA
CACHE
DATA MEMORY UNIT
ADDRESS
B
U
S
C
O
N
T
DATA
R
O
L
L
E
R
CONTROL
OPERAND DATA BUS
Figure 1. MC68060 Block Diagram
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
© MOTOROLA, 1994
SEMICONDUCTOR PRODUCT INFORMATION
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