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INA226 / SMBus timeout

Other Parts Discussed in Thread: INA226

Hi,

Please let me ask about SMBus timeout. Following comment is stated in page 5 of datasheet.

(4) SMBus timeout in the INA226 resets the interface any time SCL is low for more than 28 ms.

Is this mean that all registers return to default value if no SMBus communication for more that SMBus timeout?

Best Regards,

Sonoki / Japan Disty

  • Hi Satoshi,

    SMBus timeout only affects the SDA line, not the registers. After all data have been transferred, the master generates a stop condition, indicated by pulling SDA from low to high while SCL is high. The device includes a 28 ms timeout on its interface to prevent locking up the bus.

    Regards,
    Mayrim