参数资料
型号: MC68HC705KJ1CS
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CDIP16
封装: WINDOWED, CERDIP-16
文件页数: 63/108页
文件大小: 719K
代理商: MC68HC705KJ1CS
Low-Power Modes
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
58
Freescale Semiconductor
6.3 Effects of Stop and Wait Modes
The STOP and WAIT instructions have the following effects on MCU modules.
6.3.1 Clock Generation
Effects of STOP and WAIT on clock generation are discussed here.
6.3.1.1 STOP
The STOP instruction disables the internal oscillator, stopping the CPU clock and all peripheral clocks.
After exiting stop mode, the CPU clock and all enabled peripheral clocks begin running after the oscillator
stabilization delay.
NOTE
The oscillator stabilization delay holds the MCU in reset for the first 4064
internal clock cycles.
6.3.1.2 WAIT
The WAIT instruction disables the CPU clock.
After exiting wait mode, the CPU clock and all enabled peripheral clocks immediately begin running.
6.3.2 CPU
Effects of STOP and WAIT on the CPU are discussed here.
6.3.2.1 STOP
The STOP instruction:
Clears the interrupt mask (I bit) in the condition code register, enabling external interrupts
Disables the CPU clock
After exiting stop mode, the CPU clock begins running after the oscillator stabilization delay.
After exit from stop mode by external interrupt, the I bit remains clear.
After exit from stop mode by reset, the I bit is set.
6.3.2.2 WAIT
The WAIT instruction:
Clears the interrupt mask (I bit) in the condition code register, enabling interrupts
Disables the CPU clock
After exit from wait mode by interrupt, the I bit remains clear.
After exit from wait mode by reset, the I bit is set.
6.3.3 COP Watchdog
Effects of STOP and WAIT on the COP watchdog are discussed here.
相关PDF资料
PDF描述
MC68HRC705KJ1CS 8-BIT, UVPROM, 4 MHz, MICROCONTROLLER, CDIP16
MC68HLC705KJ1CP 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
MC68HRC705KJ1CP 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
MC68HC705L1B 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
MC68HC05L1FU 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64
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