MC13211 VS MC13213

[e2saleh]

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.

Regards

Ehab

[FPatrick]

Hello e2saleh,

I think it is 99%, that is caused by any floating pins. Even it is inside the MCU (not pins outside).

Check every port declared to output or input with pullup enabled.

I faced the sam issue yesterday.

Hope it helps.

Regards,

Peter