Excluding 32MHz crystal and 32KHz crystal from nRF52 custom board.

[Swapnil]

Hello,

I am developing a custom board using nRF52. In my previous custom board, the total current consumption is 15mA with DCDC regulator enabled. I want to reduce this current consumption. Is it possible to exclude 32MHz external crystal, since it is just used to control 64MHz crystal oscillator and I am not using it also. Also I have the same idea of removing 32KHz external crystal for reducing total current consumption.

Is it possible to do in that way ?

What other ways are there for reducing overall current consumption ?

[Keton]

15mA is a lot for nRF5x application. Either you're using additional components that are power hungry or there's much to optimize in your code. Cutting out crystals most likely won't help you. They aren't running when they're not needed and I can easily achieve 40 uA in BLE connection with lots of processing going on and both crystals used.