MC908GR8CDWE Datasheet, PDF (49/408 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Freescale Semiconductor, Inc.
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.
MC68HC908GR8 — Rev 4.0
MOTOROLA
Low Power Modes
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Technical Data
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