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