BQ76920: I2C no ACK

Ryan Walker

Part Number: BQ76920
Other Parts Discussed in Thread: EV2400

Trying to talk to this device over I2C, getting NACK. The full part number is BQ7692006PWR, so the address should be 0x18 with no CRC.

Any ideas?

0 Ryan Walker over 2 years ago

Here are the analog samples below listed below the digital, there's something strange with the SDA line at 80uS

+1 Luis H. S. over 2 years ago in reply to Ryan Walker

Hello Ryan,

Yes that does not look correct. Can you share your schematic? Have you tried communicating using the EV2400?

Best Regards,

Luis Hernandez Salomon

+1 Ryan Walker over 2 years ago in reply to Luis H. S.

Hey! I didn't have my MCU configured with open drain. Thanks

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