VDD, VDDH and DCCH mistake...

[jo!]

Dear community,

Somes mistake have been done on a production.

DCCH pin have pin connected at VDD instead of of VDDH.

I'm in "Normal Voltage mode, DC/DC REG1 enabled" with code configuration :

NRF_POWER->DCDCEN = 1;

I know that is wrong.. but do you think i i have a chance to have a functionnal board ?

[ketiljo]

The DCCH pin should be in a floating starte when the DCDC is not used. And when VDDH is not connected, REG0 will be disconnected. While it's out of spec, it should work but you need to fix it. 

REG1 is not related to this. 

[jo!]

Hi ! 
Thanks for your reply, time to update my schematics !
So, from the datasheet AND forum, my new schematics :

  


do you see somethings wrong ?

[ketiljo]

This looks correct!