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STM8S Fiches technique(PDF) 118 Page - STMicroelectronics

No de pièce STM8S
Description  STM8S Series and STM8AF Series 8-bit microcontrollers
PDF  467 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8S Fiches technique(HTML) 118 Page - STMicroelectronics

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Auto-wakeup (AWU)
RM0016
118/467
DocID14587 Rev 14
12.4
AWU registers
12.4.1
Control/status register (AWU_CSR)
Address offset: 0x00
Reset value: 0x00
7
654
3210
Reserved
AWUF
AWUEN
Reserved
MSR
rrc_r
rw
r
rw
Bits 7:6 Reserved
Bit 5 AWUF: Auto-wakeup flag
This bit is set by hardware when the AWU module generates an interrupt and cleared by reading the
AWU_CSR register. Writing to this bit does not change its value.
0: No AWU interrupt occurred
1: AWU interrupt occurred
Bit 4 AWUEN: Auto-wakeup enable
This bit is set and cleared by software. It enables the auto-wakeup feature. If the microcontroller enters
Active-halt or Wait mode, the AWU feature wakes up the microcontroller after a programmable time
delay.
0: AWU (Auto-wakeup) disabled
1: AWU (Auto-wakeup) enabled
Bits 3:1 Reserved
Bit 0 MSR: Measurement enable
This bit connects the fLS clock to a timer input capture. This allows the timer to be used to measure the
LS frequency (fLS).
0: Measurement disabled
1: Measurement enabled
Note: Refer to the datasheet for information on which timer input capture can be connected to the LSI
clock in the specific product).



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