INA226-Q1: I2C HDDAT

lei lv

Part Number: INA226-Q1
Other Parts Discussed in Thread: INA226

Hello,

I2C can communicate correctly, MCU is master, INA226 is slave.

when WRITE, the HDDAT time (from SCL pull down to SDA jump time) measured by oscilloscope was 1.712us. However, the HDDAT range given in the spec of INA226 is 10-900ns, there is a big gap between the requirement and the actual result, Please help to confirm whether this phenomenon is acceptable.

thank you!

over 2 years ago

0 Mohamed Hamida over 2 years ago

TI__Expert 6602 points

Hi Lei,

This would be valid because it is a write command from the MCU.

Best,

Mohamed

0 lei lv over 2 years ago in reply to Mohamed Hamida

Prodigy 10 points

Thanks for your reply.

So you mean that Table 3 is the specification requirements of I2C sent by INA226, rather than the requirements of I2C signals received, is that right?

0 Mohamed Hamida over 2 years ago in reply to lei lv

TI__Expert 6602 points

Hi Lei,

Table 3 is a mix of the timing spec for the signals being sent to and from the INA226. The HDDAT spec is specifically meant for the MCU writing to the INA226.

Best,

Mohamed

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INA226-Q1: I2C HDDAT