Datasheet
MC68HC908GR8 — Rev 4.0 Technical Data
MOTOROLA General Description 25
Technical Data — MC68HC908GR8
Section 1. General Description
1.1 Contents
1.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
1.4 MCU Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
1.5 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
1.6 Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
1.2 Introduction
The MC68HC908GR8 is a member of the low-cost, high-performance 
M68HC08 Family of 8-bit microcontroller units (MCUs). All MCUs in the 
family use the enhanced M68HC08 central processor unit (CPU08) and 
are available with a variety of modules, memory sizes and types, and 
package types.
This document also describes the MC68HC908GR4. The 
MC68HC908GR4 is a device identical to the MC68HC908GR8 except 
that it has less Flash memory. Only when there are differences from the 
MC68HC908GR8 is the MC68HC908GR4 specifically mentioned in the 
text.
Frees
cale Semiconductor, 
I
Freescale Semiconductor, Inc.
For More Information On This Product,
 Go to: www.freescale.com
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