Lptim Interrupt And Status Register (Lptim_Isr) - ST STM32G0 1 Series Reference Manual

Low-power timer (LPTIM)
26.7.1

LPTIM interrupt and status register (LPTIM_ISR)

Address offset: 0x000
Reset value: 0x0000 0000
31 30 29
Res. Res. Res. Res.
15 14 13
Res. Res. Res. Res.
Bits 31:7 Reserved, must be kept at reset value.
Bit 6 DOWN: Counter direction change up to down
In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has
changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the
LPTIM_ICR register.
Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to
Section 26.3: LPTIM
Bit 5 UP: Counter direction change down to up
In Encoder mode, UP bit is set by hardware to inform application that the counter direction has
changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR
register.
Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to
Section 26.3: LPTIM
Bit 4 ARROK: Autoreload register update OK
ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR
register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF
bit in the LPTIM_ICR register.
Bit 3 CMPOK: Compare register update OK
CMPOK is set by hardware to inform application that the APB bus write operation to the
LPTIM_CMP register has been successfully completed.
Bit 2 EXTTRIG: External trigger edge event
EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger
input has occurred. If the trigger is ignored because the timer has already started, then this flag is
not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register.
Bit 1 ARRM: Autoreload match
ARRM is set by hardware to inform application that LPTIM_CNT register's value reached the
LPTIM_ARR register's value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the
LPTIM_ICR register.
Bit 0 CMPM: Compare match
The CMPM bit is set by hardware to inform application that LPTIM_CNT register value reached the
LPTIM_CMP register's value.
846/1390
28 27 26 25
Res. Res. Res.
12 11 10 9
Res. Res. Res.
implementation.
implementation.
24 23 22
Res. Res. Res.
8 7 6
Res. Res. DOWN
r
RM0444 Rev 5
21 20 19 18
Res. Res. Res. Res.
5 4 3 2
ARR CMP EXT
UP
OK OK TRIG
r r r r
RM0444
17 16
Res. Res.
1 0
ARRM CMPM
r r