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BQ78Z100: I2C Not Acknowledge from device

Part Number: BQ78Z100

Hello,

I am using a bq78z100 device on a custom board. I am trying to communicate with the device using I2C but the device never responds. (Is the device in sleep mode or do i need to follow a procedure to enable the i2c line?) I used the proposed schematic on the datasheet.

I am also using an I2C buffer with 10k pullup resistors on the lines. How can i understand the problem ? I can also share schematics and layout. I am pretty new with BMS systems. Explanatory and simple responds are expected.

Thank you.