Datasheet

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.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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