lpcware

Power-down mode currents pour lpc1776

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Greg on Thu May 03 09:25:27 MST 2012
Hi,
I have a problem for the currents in power-down mode for a LPC1776, the data-sheet write 56uA, and I measure 2.7mA.
For go in power-down mode, I use:

LPC_SC->PCONP=0;           /*stop all peripherical*/
SCB->SCR = 0x4;            /*set SLEEPDEEP bit */
LPC_SC->PCON = 0x09;      /* Power Down Mode*/
__WFI();

If I disconnect VCCIO (VCC is connected) the currents rise (add 2mA ).

Only the deep-power-down mode have a good currents (2.4uA measured), but it not acceptable for me because I want the internal RAM powered.

Do you used the power-down mode and what is your measured currents?

Thanks in advance for any help.
Greg

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