currents in Deep power-down mode for LPC810

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by HaltPapa on Sat Mar 01 10:26:04 MST 2014
I have a problem for the currents in Deep power-down mode for a LPC810.

The datasheet of LPC81X stated that the typical Deep power-down mode current is  less than 1uA.
However, I tested is around 2mA.

I used PMU sample code in "LPC800 LPCXpresso Examples V1.03.zip".
I added only one line below.


I can enter __WFI() (I think it's Deep power-down mode) and can wake-up from it  using the WAKEUP pin.
When I was measureing the current, I used only Vdd, Vss and Reset pins. Reset pin was pulled up by R=10k. Other pins were open.

When Reset pin set to Low, the current drops to around 700uA. Does it mean that I'm not entering Deep power-down mode?

Thanks in advance for any help.