Claus Beckenbauer

Stop3 Current Consumption ~500uA - MC9S08QE8

Discussion created by Claus Beckenbauer on May 19, 2008
Latest reply on May 19, 2008 by Jim Donelson

Hi all,

i'm using the PE Micro DEMOQE Board with an MC9S08QE8 Daughter Card.

I have measured the current consumption in stop3 mode, which is round about 500uA.
That's too much! The FLL is in FEE Mode.

Code for device initialization

setReg8(SOPT1, 0x61);                
setReg8(SPMSC1, 0x18);               
setReg8(SPMSC2, 0x02);               
clrReg8Bits(SPMSC3, 0x08);           
setReg8(ICSC1, 0x06);                /* Initialization of the ICS control register 1 */
setReg8(ICSC2, 0xC4);               /* Initialization of the ICS control register 2 */
while(!ICSSC_IREFST) {             /* Wait until the source of reference clock is internal clock */
clrReg8Bits(ICSSC, 0xE0);         /* Initialization of the ICS status and control */

clrReg8Bits(SCGC1, 0x75);            
clrSetReg8Bits(SCGC2, 0xED, 0x10);   

Have anybody an idea where the problem is?



Added p/n to subject.

Message Edited by NLFSJ on 2008-05-19 01:38 PM