vBAT circuitry for STM32L476RG

[paker earth]

Posted on January 04, 2017 at 10:20

Hi all

I would like to connect a battery to vBAT Pin for my Nucleo STM32L476RG.

I'm wondering if I should remove SB45 resistor or not.

If anyone could tell me what's the correct steps to build a vBAT backup circuitry.

Thank you in advance.

[Oliver Beirne]

Posted on January 04, 2017 at 12:24

Hello

paker.earth

I have moved your thread to the

https://community.st.com/community/stm32-community/stm32-forum?sr=search&ampsearchId=bdd0a913-0642-4329-8e32-f48bab9f6e57&ampsearchIndex=0

where product-related questions should be posted.

Many thanks

Oli

[waclawek.jan]

Posted on January 04, 2017 at 13:28

Yes. Remove SB45 and connect battery to pin 33 of CN7.

You might want to have a look at the L4 DISCO, it has a CR2032 battery holder too.

JW

[Nesrine M_O]

Posted on January 04, 2017 at 14:02

Hi

paker.earth

‌,

Yes ,you have to remove SB45 as said

Waclawek.Jan

‌.

-Nesrine-