lpc4078fbd208 battery current consumption

[lpcware]

Content originally posted in LPCWare by skrivuts on Fri Sep 13 00:08:23 MST 2013
Dear colleagues!

During evaluation the LPC4078FBD208 device which
seems to be pretty interesting and suitable for my project
I have encountered with a problem.
The current consumption from the 3V-battery comes up to 27uA.
I measured all four chips I have and result was 20..27 uA.
One of the chip was without the user code.
And just when I connect the 1.3V element the current goes down to 1uA.
But it is not enough for the clock to work well.
Please help me to get an answer.
Thank you.

[lpcware]

Content originally posted in LPCWare by skrivuts on Sat Sep 28 23:04:38 MST 2013
Hi, Xianghui Wang

When I connect 3.3V, 3.0V or 2.5V the current is about 20uA.
When I connect 1.3V it becomes 1..2 uA.
I expected the consumption to be 1uA at 3V (standard LiIon battery).

[lpcware]

Content originally posted in LPCWare by xianghuiwang on Sat Sep 28 16:45:50 MST 2013
Hi, SK,

Is "1.3V element" what you really want to say? Are you trying to say "3.3V element"?

"And just when I connect the 1.3V element the current goes down to 1uA."