参数资料
型号: MC68HC05P9AMDW
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, PDSO28
封装: SOIC-28
文件页数: 119/158页
文件大小: 3885K
代理商: MC68HC05P9AMDW
Low-Power Modes
Wait Mode
Low-Power Modes
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 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 0 on the RESET pin resets the MCU and
loads the program counter with the contents of locations $1FFE
and $1FFF.
Figure 26 shows the sequence of events caused by the WAIT
instruction.
Figure 27 shows the effect of the STOP and WAIT instructions on the
CPU clock and the timer clock.
9-mc68hc05p9a
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
MC68HC05P9ACP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05P9DWR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05RC18P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05RC18FN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05SR3FB 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP44
相关代理商/技术参数
参数描述
MC68HC05P9AMP 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AP 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AVDW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AVP 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9DW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT