CURRENT CONSUMPTION OF NRF51822 DEVKIT - PCA10001 v1.0

RE: CURRENT CONSUMPTION OF NRF51822 DEVKIT - PCA10001 v1.0

Ole Morten — Tue, 26 Nov 2013 12:54:59 GMT

There is a problem with the first revision chips, as used on PCA10001 version 1.0, that may cause increased current consumption, but I haven't seen any that are as bad as 21 µA in room temperature conditions.

However, if you don't see this problem with version 2.1.0, I suppose it has to be either that or something about the board layout that causes this. I know there have been some changes to the layout, but I don't think any of them should affect current consumption that much.

RE: CURRENT CONSUMPTION OF NRF51822 DEVKIT - PCA10001 v1.0

Guest — Tue, 26 Nov 2013 11:35:18 GMT

Yes, that's exactly what I did for the current measurement. I will try to put the chip directly in __WFI() and tell you the result. However, I think there is another problem on this board as I do measure the 3uA on the PCA10001 v2.1 board with the same measurement system.

RE: CURRENT CONSUMPTION OF NRF51822 DEVKIT - PCA10001 v1.0

Bastiaan — Tue, 26 Nov 2013 11:35:18 GMT

RE: CURRENT CONSUMPTION OF NRF51822 DEVKIT - PCA10001 v1.0

Ole Morten — Tue, 26 Nov 2013 11:09:15 GMT

It seems this has been lost, since it hasn't shown up in the unanswered section due to the +1 answer above. Sorry about that.

However, I can't really say that I have any good suggestions on this. Have you tried measuring current consumption when just putting the chip directly in __WFI(), without enabling any peripherals? Also, how do you measure the current consumption? I'd recommend you to make sure to use the current measurement header, since that will make sure that you don't accidentially also factor in other devices on the board. To use this header you must cut the SB16 solder bridge, and then use an amperemeter, or mount a resistor on R4 and then use an oscilloscope.

RE: CURRENT CONSUMPTION OF NRF51822 DEVKIT - PCA10001 v1.0

CGherb — Fri, 01 Nov 2013 03:43:57 GMT

Seeing the same problem. +1