Surge startup current of nRF24LE1

RE: Surge startup current of nRF24LE1

infibit — Wed, 26 Sep 2018 12:13:37 GMT

Can the first lines of my code be like this?

Void main()
{
  PWRDWN = 0x04;
  PWRDWN = 0x00;
  mcu_init();
  gzll_init();
	
  hal_clk_set_freq(HAL_CLK_125KHZ); //if you put in 125Khz then uart wont work
  WUOPC0 = 0x02;

Will this do the job?

RE: Surge startup current of nRF24LE1

infibit — Wed, 26 Sep 2018 12:10:03 GMT

Ok.

RE: Surge startup current of nRF24LE1

Kenneth — Wed, 26 Sep 2018 11:31:35 GMT

You should have already received links to multiple examples that put the chip to power down mode here:
https://devzone.nordicsemi.com/f/nordic-q-a/38814/how-to-set-nrf24le1-in-register-retention-with-analog-comparator-wakeup-sample-code-needed-please-help

Examples:

https://www.nordicsemi.com/eng/Nordic-FAQ/All/How-to-setup-register-retention-mode-on-the-nRF24LE1

https://www.nordicsemi.com/eng/Nordic-FAQ/All/How-to-setup-register-retention-mode-timer-on-on-the-nRF24LE1

RE: Surge startup current of nRF24LE1

infibit — Wed, 26 Sep 2018 09:17:50 GMT

Waiting for your reply.

RE: Surge startup current of nRF24LE1

awneil — Tue, 25 Sep 2018 16:16:33 GMT

There will also be some "inrush" as capacitors on your board charge, etc ...

RE: Surge startup current of nRF24LE1

infibit — Tue, 25 Sep 2018 16:12:13 GMT

Could you provide some sample code for this such that at startup the chip is in register retention mode or something

RE: Surge startup current of nRF24LE1

Kenneth — Tue, 25 Sep 2018 15:54:11 GMT

While the chip is in reset state (for instance VDD ramp up and settle) and until code execution put the chip in sleep state, then it will likely draw current in the range you state.

Best regards,
Kenneth