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MC68HC908GR8 — Rev 4.0
Technical Data
MOTOROLA
Low Power Modes
49
Technical Data — MC68HC908GR8
Section 3. Low Power Modes
3.1 Contents
3.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
3.3
Analog-to-Digital Converter (ADC) . . . . . . . . . . . . . . . . . . . . . .50
3.4
Break Module (BRK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
3.5
Central Processor Unit (CPU). . . . . . . . . . . . . . . . . . . . . . . . . .51
3.6
Clock Generator Module (CGM). . . . . . . . . . . . . . . . . . . . . . . .52
3.7
Computer Operating Properly Module (COP). . . . . . . . . . . . . .52
3.8
External Interrupt Module (IRQ) . . . . . . . . . . . . . . . . . . . . . . . .53
3.9
Keyboard Interrupt Module (KBI) . . . . . . . . . . . . . . . . . . . . . . .53
3.10
Low-Voltage Inhibit Module (LVI) . . . . . . . . . . . . . . . . . . . . . . .54
3.11
Serial Communications Interface Module (SCI) . . . . . . . . . . . .54
3.12
Serial Peripheral Interface Module (SPI) . . . . . . . . . . . . . . . . .55
3.13
Timer Interface Module (TIM1 and TIM2). . . . . . . . . . . . . . . . .55
3.14
Timebase Module (TBM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
3.15
Exiting Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
3.16
Exiting Stop Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
3.2 Introduction
The MCU may enter two low-power modes: wait mode and stop mode.
They are common to all HC08 MCUs and are entered through instruction
execution. This section describes how each module acts in the low-
power modes.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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