参数资料
型号: ST7FLITE19BF0B6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP20
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 100/159页
文件大小: 2855K
代理商: ST7FLITE19BF0B6
ST7LITE1xB
45/159
POWER SAVING MODES (Cont’d)
Similarities with Halt mode
The following AWUFH mode behaviour is the
same as normal Halt mode:
– The MCU can exit AWUFH mode by means of
any interrupt with exit from Halt capability or a re-
– When entering AWUFH mode, the I bit in the CC
register is forced to 0 to enable interrupts. There-
fore, if an interrupt is pending, the MCU wakes
up immediately.
– In AWUFH mode, the main oscillator is turned off
causing all internal processing to be stopped, in-
cluding the operation of the on-chip peripherals.
None of the peripherals are clocked except those
which get their clock supply from another clock
generator (such as an external or auxiliary oscil-
lator like the AWU oscillator).
– The compatibility of Watchdog operation with
AWUFH mode is configured by the WDGHALT
option bit in the option byte. Depending on this
setting, the HALT instruction when executed
while the Watchdog system is enabled, can gen-
erate a Watchdog RESET.
Figure 30. AWUF Halt Timing Diagram
AWUFH interrupt
fCPU
RUN MODE
HALT MODE
256 OR 4096 tCPU
RUN MODE
fAWU_RC
Clear
by software
tAWU
1
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