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BQ76940EVM: BQ76940

Joao Paulo Teixeira
Intellectual 370 points
Part Number: BQ76940EVM
Other Parts Discussed in Thread: BQ78350, BQ76940

Hello,

I wonder what should I do if the alert pin caused an interrupt on uC but for some reason (e.g. problem in I2C communication) I couldn't clear the SYS_STAT (0x00) register.

note: I'm not using BQ78350 as host.

Thanks,

Regards,

João Paulo

  • 0
    TI__Guru 54715 points
    Hi Joao Paulo,
    If there is noise on the I2C and the slave device holds SDA low the master should send clocks so that the slave releases the bus. A host should implement this recovery mechanism. Once the bus is clear send the status register clear command. The bq76940 does not have a reset pin.