Bright Bao

ADC input broke MCU,why?

Discussion created by Bright Bao on Jun 29, 2006
Latest reply on Jul 4, 2006 by Bright Bao
In my project,I use MC9S08AW16.
ADC input voltage range is from 5V~26V.
and I use 47K (series) and 11K(shunt) by ADC. It works well.
but when I changes 11K to 47K,the MCU is broken when the input voltage is 13.5V.
why?

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