參數(shù)資料
型號: MC68HC05P9ACDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 116/158頁
文件大?。?/td> 3885K
代理商: MC68HC05P9ACDW
Low-Power Modes
60
Low-Power Modes
External reset — A logic 0 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.
When the MCU exits stop mode, processing resumes after a
stabilization delay of 4064 oscillator cycles.
An active edge on the PD7/TCAP pin during stop mode sets the ICF flag
when an external interrupt brings the MCU out of stop mode. An external
interrupt also latches the value in the timer registers into the input
capture registers.
If a reset brings the MCU out of stop mode, then an active edge on the
PD7/TCAP pin during stop mode has no effect on the ICF flag or the
input capture registers.
See Figure 24 for stop recovery timing information.
Figure 24. Stop Recovery Timing
t
ILIH
4064 t
CYC
OSC
t
RL
RESET
IRQ/V
PP
IRQ/V
PP
INTERNAL
CLOCK
INTERNAL
ADDRESS
NOTES:
1. Internal clocking from OSC1 pin
2. Edge-triggered external interrupt mask option
3. Edge- and level-triggered external interrupt mask option
4. Reset vector shown as example
RESET OR INTERRUPT
VECTOR FETCH
1FFE
1FFF
(NOTE 4)
BUS
(NOTE 3)
(NOTE 2)
(NOTE 1)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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