LPC1227 current consumption problem

lpcware — Wed, 15 Jun 2016 17:01:09 GMT

Content originally posted in LPCWare by patel24gic on Wed Mar 19 21:56:16 MST 2014
Hi every body

I am tring to use Deep Sleep mode for LPC1227 controler to reduce current consumption , i did it as describbe in UM10441

but current consumtion is still 10 ma.

see code :

void DeepSleep(void)
{
/*
* Save for when we wakeup
*/
LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG;
/*
* BOD and WD Osc. disabled
*/
LPC_SYSCON->PDSLEEPCFG = 0x0000FFFF;
/*
* Deep Sleep Mode
*/
SCB->SCR |= 0x04;
/*
* set up the Power Management Unit
*
* Deep power down mode is DISABLED i.e. Deep Sleep will be entered
*/
LPC_PMU->PCON &= ~(1 << 1);
/* And so to sleep zzzzzzzzzzzz */
__WFI();
}

and also find my circuit if required ,I removed all of the component from ckt except battery ckt, & tact switch wit pull-up registers

but still controller is consummin 10 ma current.

please help me.

Re: LPC1227 current consumption problem

lpcware — Wed, 15 Jun 2016 17:01:10 GMT

Content originally posted in LPCWare by embd02161991 on Fri Mar 28 00:38:34 MST 2014
Hi,

Please refer the low power application note AN11069 for LPC1227 .

http://www.lpcware.com/content/nxpfile/an11069-lpc122x-power-modes-v10

Thanks,

NXP Technical Support

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LPC1227 current consumption problem

Re: LPC1227 current consumption problem