when we should use the OB_STOP_RST config in Option Bytes?

[Junde]

Hi there,

There is a config option named "OB_STOP_RST" that exists in Option Bytes' USERconfig, I tested it with STOP mode, and it works well.

But I can't understand when we should use it. After clearing this bit to OB_STOP_RST, the MCU will reset right away and enter run mode when it enters stop mode, why don't we just reset the MCU, it's easier and faster.

Same as the OB_STDBY_RST config.

[Sarra.S · Accepted solution]

Hello @Junde, 

This can be useful in scenarios where the system needs to ensure a clean start after waking up from STOP mode, avoiding any potential issues that might arise from an improper wake-up sequence or corrupted state

>>why don't we just reset the MCU, it's easier and faster

these OB provide a controlled way to handle low-power mode entries, instead of relying on external events or manual resets.

[Junde]

@Sarra.S 

I got it, thank you.