Hello,
I am using the BQ27421 on a product I'm working on. When capacity hits '0%', the RAM seems to lose the values that I had configured, which is a pretty serious issue. The design relies on the BATLOWEN function of the gauge to inform the system when not to attempt a startup, which is not the default value, so if that functionality is wiped away by the gauge losing its configuration values, I've got a problem. The battery voltage is still quite a ways above the minimum stated by the data sheet required to keep the 1.8V LDO alive, which is what I thought was being used to keep those values valid. Is there another mechanism on the IC that would cause the IC to reset once the capacity hits 0%?
Thanks,
Jake