current consumption when flashing the chip

[samet kocatepe]

hi everyone.

we designed a custom board for nrf 51822QFAA chip and we flash the chip by using nrf51 DK debugger with tag-connect cable. when i flash the chip(using keil or nrfGo studio), we noticed that current consumption is around 1.2 mA but if we press reset button on the development kit(still tag-connect cable is in contact with custom board), consumption decreases to normal values. in earlier times we thought this was our mistake but when we try the same application for development kit(nrf51 DK by removing SB9 and current consumption) state was the same. In the same way, pressing reset button decreased current consumption for development Kit. In addition, removing and mounting the battery(from our custom board) again solves our problem.

Can anyone explain me why this problem is originate in and how i can solve this problem simply.

My Best Regards.

[bjorn-spockeli]

The nRF51822s debug interface is active leading to an increase of about 1mA in current consumption. The debug interface of the chip will stay enabled after having flashed it, and will not be disabled until a full reset (i.e. removing and re-applying voltage to the chip).

[samet kocatepe]

thank you for your feedback Bjørn .