參數(shù)資料
型號： MC68HC705P9CDW
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝： SOIC-28
文件頁數(shù)： 137/160頁
文件大小： 2208K
代理商： MC68HC705P9CDW
Low Power Modes
Technical Data
MC68HC705P9 — Rev. 4.0
78
Low Power Modes
MOTOROLA
6.3 Wait Mode
The WAIT instruction puts the MCU in an intermediate power-
consumption mode and has the following effects on the MCU:
Clears the I bit in the condition code register, enabling interrupts
Stops the CPU clock, but allows the internal clock to drive the
capture/compare timer, the COP watchdog, and the ADC
The WAIT instruction does not affect any other registers or any I/O lines.
The following conditions restart the CPU clock and bring the MCU out of
wait mode:
External interrupt — A high-to-low transition on the IRQ/VPP pin
loads the program counter with the contents of locations $1FFA
and $1FFB.
Timer interrupt — Input capture, output compare, and timer
overflow interrupt requests load the program counter with the
contents of locations $1FF8 and $1FF9.
COP watchdog reset — A timeout of the COP watchdog resets the
MCU and loads the program counter with the contents of locations
$1FFE and $1FFF. Software can enable timer interrupts so that
the MCU can periodically exit wait mode to reset the COP
watchdog.
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.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)PDF資料
PDF描述
MC68HC705P9DW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P9MS 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
MC68HC705P9CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P9VS 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
MC68HC705P9S 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
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