Hi, I am just testing the PowerDown Feature with the LPC2138. The EXTWAKE1 bit is set for wake up the processor after power down. I can enter PowerDown Mode (PCON|=0x02;) and the complete application consumes 30mA instead of 70mA. That's ok due to the external components not sleeping.... But after wake up the problem is that the processor works in slow motion and doesn't consume the previously needed 70mA. It consumes only 40mA. The reading of the PCON register is 0x0. The reading of the PCONP register is 0x001817BE. (same value after startup) Any idea? Thank's to all! Martin
Message
Problem with Wakeup from PowerDown Mode
2005-02-21 by gewitter2000