AnsweredAssumed Answered

VREFBUF enable for STM32L476VG not possible?

Question asked by Schaufel.Merlin on May 2, 2017
Latest reply on May 4, 2017 by Schaufel.Merlin

I am using a STM32L476VG (100 pin package, VREF+ not bonded to VDDA) for a mixed signal design. I planed to use the VREF+ as a 2.048V reference output. Currently there is no load on the VREF+ pin.


Unfortunately I always get a HAL_TIMEOUT while waiting for the VRR bit in the VREFBUF CSR register:



Also no voltage output is measureable at the VREF+ pin...

Do I miss something here? I tried to change the order or manually set the registers (without time-out) but no output at all.


Thank you for your help!!

Best regards,