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software loss when runnng on car

Question asked by wang jiajie on May 24, 2018
Latest reply on May 28, 2018 by wang jiajie

Hellow,everyone ,I meet a  emergency problem   when use MC9S12ZVCA192 chip,

the prombem did not occor in the lab ,but when on car it happened. and happend two times on road car  testing

after power off and on,the chip can't init   like the program itself is broken ,not running and have no functions .

first time the chip don't have bootloader and broken in 20000m,

second time the chip have bootloader and broken in 1000m,

I used BDM for the second time to access the BKGD pin and connected corretly ,and the memory data is mess.

Are there any Guide and Suggestions for this problem?