I'm was using smac in MC13213 where the device goes to sleep mode (stop mode 3) and wakes up via a keyboard interrupt (PORTA/KBI), it worked fine. I changed the chip to MC13211 which has no difference except the RAM/ROM size.. The problem I faced after using the MC13211 chip is that I found there is a 600uA current draw in the sleep mode which is supposed to be less than 1uA!!! The same code on the same hardware draws 1uA if I use MC13213,, but when I use MC13211 the current start ramping from 50uA up to 600uA !! could anyone explain what is going.