Minimum current consumption

RE: Minimum current consumption

Bluesky — Wed, 05 Dec 2018 02:28:43 GMT

Hi, I would like to ask how can i get the current consumption that was stated in the datasheet which is 0.7uA and the value I get from the reading is about 8-9 uA.

#include "boards.h"

/**
 * @brief Function for application main entry.
 */
int main(void)
{
    NRF_POWER->SYSTEMOFF = 1;
}
/** @} */

Is this the right code as mention above?? Do I need to do any configuration in the other part of the FW or HW?

RE: Minimum current consumption

Ole Bauck — Thu, 01 Sep 2016 10:56:00 GMT

I am glad it that worked. Could you accept the answer (grey checkmark below the arrows) and close the case to help others find the right answer to this case?

RE: Minimum current consumption

t2o2 — Wed, 31 Aug 2016 20:01:39 GMT

Thank you!!! it works at the expected level now.

RE: Minimum current consumption

Ole Bauck — Tue, 30 Aug 2016 11:26:11 GMT

The "wires" you marked in the picture are the UART wires, not the debug wires. The debug wires are JDIO, JCLK, JSWO and J21. Can you see if the result is still the same if you measure with these wires cut in addtion to the UART wires?

RE: Minimum current consumption

t2o2 — Mon, 29 Aug 2016 22:26:47 GMT

I cut the debug wires during testing as shown in picture. The system is purely powered by a coin cell battery with no peripheral attached. The current waveform analyzer used is Keysight CX3324A. link text

RE: Minimum current consumption

Ole Bauck — Wed, 24 Aug 2016 15:04:35 GMT

You have disconnected the debug cable? Could you attach a picture of your setup?

What kind of current waveform analyzer are you using?

RE: Minimum current consumption

t2o2 — Wed, 24 Aug 2016 12:18:11 GMT

The board is powered by coin cell only, and the circuit protection has been removed as well. We are using Rigado BMD-300 dev board, but the current measurement looks the same. And the specification of BMD-300 said the system off state consumes the same level of power (0.7uA) while the system is off.

RE: Minimum current consumption

Ole Bauck — Wed, 24 Aug 2016 12:13:26 GMT

You have disconnected the usb cable? Have you power cycled the board such that it is not in debug mode? Which DK revision are you using, 1.1.0 or 1.1.1?