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Auto switch to internal RC oscillator when external clock fails?

Abhishek Kumar
Associate III
Posted on January 09, 2018 at 13:53

I am working STM32F777 mcu where I wanted to know if there is any way of a configuration in which when the external clock (HSE) fails, the mcu automatically selects HSI RC, i.e. the internal clock oscillator?

2 REPLIES 2
Posted on January 09, 2018 at 14:08

Read Clock security system (CSS) chapter in RM0410.

JW