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Clocking RTC from HSE

echelon2010
Associate II

‎2015-10-15 06:17 AM

Posted on October 15, 2015 at 15:17

Hello. I use STM32F429 controller with 12MHz HSE oscillator. Is it posible to clock RTC from HSE while controller supplied from VBAT pin only?

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1 REPLY 1
waclawek.jan
Guru

‎2015-10-15 06:25 AM

Posted on October 15, 2015 at 15:25

No. Only LSE is in the VBAT power domain. Read PWR chapter in RM.

JW

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