nRF52840 current consumption increases by more than 1mA after pin-reset with nrfjprog -p

[Frank Viganske]

I am using a nRF52840 Development Kit to flash a custom board with a nRF52840. When I use the nrfjprog -p (or --pinreset) option to reset the CPU, it will consume over 1mA more current than expected. The extra current will remain, even when I put the device into SystemOff-Mode.

The system will return to normal power consumption only after a power cycle.

If i do a pin-reset without the Development Kit connected, just by shorting the reset pin to GND, the current consumption will be normal. The problem occurs only when i use the pinreset function of the nrfjprog.

I'm using nrfjprog version: 10.9.0
JLinkARM.dll version: 6.80a

[Simonr]

Hi

First off, can you try upgrading to the latest nrfjprog and J-Link version to see if that helps. I've asked the developers internally if there is any reason the pinreset call would have increased current consumption. I'll let you know when I hear back from them.

Best regards,

Simon

[Frank Viganske]

Hi Simon,

i updated to nrfjprog version: 10.13.0
JLinkARM.dll version: 7.50a

and that fixes the problem indeed. 

Thank you for the quick help.

Best regards,

Frank