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I2C line of AD5259

Question asked by kotoo@fujiele.co.jp on Nov 16, 2015
Latest reply on Dec 7, 2015 by msamera

Please teach me I2C line of AD5259

 

SCL, SDA pin it will pull up as shown in Figure 46 and 47.
But,the power supply circuit of the MCU and  AD5259 has been separate.
It is a circuit configured to pull up the SDA,SCL by using the power of the MCU.

 

When the power is supplied only to the AD5259, it is not pulled up and MCU is not power on.
Do you voltage is supplied from I2C to MCU?
I am concerned that the CPU is broken.

 

Thank you.

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