Current draw when SYSTEM OFF with GPIO input LOW

RE: Current draw when SYSTEM OFF with GPIO input LOW

jalan — Tue, 09 Feb 2021 18:15:53 GMT

Thanks for the good tip!

RE: Current draw when SYSTEM OFF with GPIO input LOW

Håkon Alseth — Tue, 09 Feb 2021 07:52:18 GMT

Hi,

[quote user="jalan"]Yes, mode 1 is grounded input. Thanks for the reply. Is there anyway to avoid the current draw softwarely or hardwarely? [/quote]

You can for instance use an external pull-up resistor instead, in the 100k-1M area.

Alternative can be to handle this in firmware, by switching the pull-resistor off, or setting it as a pull-down in this mode.

Kind regards,

Håkon

RE: Current draw when SYSTEM OFF with GPIO input LOW

jalan — Mon, 08 Feb 2021 19:46:10 GMT

Yes, mode 1 is grounded input. Thanks for the reply. Is there anyway to avoid the current draw softwarely or hardwarely?

RE: Current draw when SYSTEM OFF with GPIO input LOW

Håkon Alseth — Mon, 08 Feb 2021 11:20:44 GMT

Hi,

[quote user=""]This issue I came across is when it sleep system off with mode 1, it draws around 0.22mA. [/quote]

"Mode 1" means that the input is grounded, right? If I understand correctly, then you're most likely seeing current flow through the pull up on that pin.

3V/0.22 = 13kOhm, which is the nominal pull resistance.

Kind regards,

Håkon