Current consumption of nRF52 SoC differs widely between chips

RE: Current consumption of nRF52 SoC differs widely between chips

Jared — Wed, 24 Apr 2019 07:38:19 GMT

Hi Andre,

The variation in the current consumption in sleep is normal distributed with the specified value in the product specification being the expected value. The variation of 1 µA is within what is accepted and is not considered to be a failed sample.
Yes, sorry it seems that i forgot to write the number of bytes properly.

Best regards

Jared

RE: Current consumption of nRF52 SoC differs widely between chips

Mr_BLE — Tue, 23 Apr 2019 09:47:35 GMT

Hi Jared,

1. OK, I will wait.

2. The command you showed me did not work, but I know what your intention was and corrected the command:

C:\Users\XXX>nrfjprog --memrd 0x50000700 --n 128
0x50000700: 00000002 00000002 00000002 00000003   |................|
0x50000710: 00000003 00000002 00000003 00000002   |................|
0x50000720: 00000003 00000002 00000002 00000003   |................|
0x50000730: 00000001 00000003 00000003 00000003   |................|
0x50000740: 00000003 00000002 00000003 00000002   |................|
0x50000750: 00000003 00020000 00000002 00000002   |................|
0x50000760: 00000002 00000002 00000002 00000002   |................|
0x50000770: 00000002 00000002 00000002 00000003   |................|

@0x50000730: This is GPIO 12 and there is the SCK connected
@0x50000754: This is GPIO 21 and there is the interrupt sensing input for a button with an external pull-down

Is this sufficient for your investigation?

Thanks & Regards

RE: Current consumption of nRF52 SoC differs widely between chips

Jared — Wed, 17 Apr 2019 13:28:17 GMT

Hi,

I would need to discuss the variation with some colleagues of mine that are currently not in office due to the Easter holidays. I'll return with an answer regarding this after the holidays next week.
Only the MISO pin is uninitialized when the SPI driver is uninitialized. What is the output if you read the GPIO registers with the nrfjprog command: nrfjprog --memrd 0x50000700 --n 0x7

Best regards

Jared