Table 37. Standby Mode - ST STM32G4 Series Reference Manual

RM0440
Standby mode
Mode entry
Mode exit
Wakeup latency

Table 37. Standby mode

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 PWR_CR1
– WUFx bits are cleared in power status register 1 (PWR_SR1)
On return from ISR while:
– SLEEPDEEP bit is set in Cortex
– SLEEPONEXIT = 1
– No interrupt is pending
– LPMS = "011" in PWR_CR1 and
– WUFx bits are cleared in power status register 1 (PWR_SR1)
– 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, external Reset in
BOR reset
Reset phase
RM0440 Rev 1
Power control (PWR)
Description
®
-M4 with FPU System Control register
®
-M4 with FPU System Control register
NRST
pin, IWDG Reset,
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