Table 32. Standby Mode Summary - ST STM32G0 1 Series Reference Manual

Power control (PWR)
Exiting Standby mode
The MCU exits Standby mode according to section
status flag in the
Standby mode. All registers are reset after wakeup from Standby except for
register 3
Refer to
Characteristic
Mode entry
Mode exit
Wakeup latency
140/1390
Power control register 3 (PWR_CR3)
(PWR_CR3).
Table 32: Standby mode summary

Table 32. Standby mode summary

WFI (Wait for Interrupt) or WFE (Wait for Event) while:
– SLEEPDEEP bit is set in Cortex
– No interrupt (for WFI) or event (for WFE) is pending
– LPMS = "011" in
– WUFx bits are cleared in
On return from ISR while:
– SLEEPDEEP bit is set in Cortex
– SLEEPONEXIT = 1
– No interrupt is pending
– LPMS = "011" in
– WUFx bits are cleared in
– The RTC flag corresponding to the chosen wakeup source (RTC Alarm
A, RTC Alarm B, RTC wakeup, tamper or timestamp flags) is cleared
WKUPx pin edge, RTC event, TAMP event, external reset on NRST pin,
IWDG reset, BOR
Reset phase
Entering low-power
for more details on how to exit Standby mode.
Description
Power control register 1 (PWR_CR1)
Power status register 1 (PWR_SR1)
Power control register 1 (PWR_CR1)
Power status register 1 (PWR_SR1)
RM0444 Rev 5
modes. The SBF
indicates that the MCU was in
®
-M0+ System Control register
®
-M0+ System Control register
RM0444
Power control