参数资料
型号: MC68HC705P9CS
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
封装: CERDIP-28
文件页数: 134/160页
文件大小: 2208K
代理商: MC68HC705P9CS
MC68HC705P9 — Rev. 4.0
Technical Data
MOTOROLA
Low Power Modes
75
Technical Data — MC68HC705P9
Section 6. Low Power Modes
6.1 Contents
6.2 Stop Mode
The STOP instruction puts the MCU in its lowest power-consumption
mode and has the following effects on the MCU:
Stops the internal oscillator, the CPU clock, and the internal clock,
turning off the capture/compare timer, the COP watchdog, the
SIOP, and the ADC
Clears the I bit in the condition code register, enabling external
interrupts
Clears the ICIE, OCIE, and TOIE bits in the timer control register,
disabling further timer interrupts
The STOP instruction does not affect any other registers or any I/O lines.
The following events bring the MCU out of stop mode:
An external interrupt signal on the IRQ/VPP pin — A high-to-low
transition on the IRQ/VPP pin loads the program counter with the
contents of locations $1FFA and $1FFB. The timer resumes
counting from the last value before the STOP instruction.
External reset — A logic zero on the RESET pin resets the MCU
and loads the program counter with the contents of locations
$1FFE and $1FFF. The timer begins counting from $FFFC.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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