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BQ3050 -- ROM mode issue about the seal state

Other Parts Discussed in Thread: BQ3050

Hi All ,

My code will read voltage/current/temperature/capacity/black date within 1 second.   After read the data, I will write the seal command to gas gauge. After 2 seconds delay, the code will loop in. 

I continuously implement such procedures in two days.    Sometimes, I find reading data error and entry ROM mode of the bq3050 .  However, my code is not to execute ROM mode and unseal . 

What is the situation?     Gas gauge will automatically enter the rom mode in seal state.