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About BDM Can't Connect MC9S12XEP100

Question asked by qh xiao on Jul 23, 2015
Latest reply on Jul 27, 2015 by Radek Sestak

We have a product used the chip mc9s12xep100, after running for a period of time in the product and found with BDM to chip connection, and download the program still in normal operation, but not the program upgrade. After replacing the chip, BDM can be downloaded normally. Excuse me, what is the reason?