参数资料
型号: MC68HC05C8AFNE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, LCC-44
文件页数: 46/116页
文件大小: 781K
代理商: MC68HC05C8AFNE
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A Data Sheet, Rev. 5.1
Freescale Semiconductor
35
Chapter 6
Low-Power Modes
6.1 Introduction
This section describes the two low-power modes — stop and wait. Figure 6-1 shows the sequence of
events caused by the STOP and WAIT instructions.
Figure 6-1. Stop/Wait Mode Flowchart
1. FETCH RESET VECTOR
OR
2. SERVICE INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
1. FETCH RESET VECTOR
OR
2. SERVICE INTERRUPT
A. STACK
B. SET I BIT
C. VECTOR TO
INTERRUPT
ROUTINE
Y
STOP
OSCILLATOR ACTIVE
TIMER CLOCK ACTIVE
PROCESSOR CLOCKS STOPPED
CLEAR I BIT
(IRQ)
EXTERNAL
RESET
TURN ON OSCILLATOR
WAIT FOR TIME
DELAY TO STABILIZE
RESTART
PROCESSOR CLOCK
WAIT
STOP OSCILLATOR
AND ALL CLOCKS
CLEAR I BIT
INTERRUPT
TIMER
INTERRUPT
(IRQ)
EXTERNAL
Y
N
INTERRUPT
SCI
Y
N
INTERRUPT
SPI
N
INTERRUPT
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