Skip to main content
Visitor II
September 16, 2026
Solved

STM32U575 Wake-up from STOP3 in SRAM2

  • September 16, 2026
  • 1 reply
  • 31 views

In Table 7.4, "Low-power mode wake-up timings on LDO" of the datasheet, there is no mention of the FSTEN setting in the conditions for twu(stop3)​ (wake-up in SRAM2). When waking up in SRAM2, is the wake-up time typ. 22.5 μs at MSI=24MHz regardless of the FSTEN setting?

Best answer by KDJEM.1

Hello ​@YokaiX and welcome to the community;

 

According to the datasheet, the wake-up times given in the table below are the latency between the event and the execution of the first user instruction (FSTEN = 1 in PWR_CR3 if not mentioned).

 

Thank you.

Kaouthar

1 reply

KDJEM.1
KDJEM.1Best answer
ST Technical Moderator
September 16, 2026

Hello ​@YokaiX and welcome to the community;

 

According to the datasheet, the wake-up times given in the table below are the latency between the event and the execution of the first user instruction (FSTEN = 1 in PWR_CR3 if not mentioned).

 

Thank you.

Kaouthar

To give better visibility on the answered topics, please click on "Best answer" on the reply which solved your issue or answered your question.