I2C_SDA and I2C_SCL dropped when NT3H2111 powered on

[Annndong]

Hi,

  There are 2 PADs from MCU connecting to I2C_SDA and I2C_SCL.

  R701 and R702 pull-ups to VCC:

     

  These 2 PADs are configured as GPIO input pull-up before NT3H2111 power on.

  The waveform of power on is shown in the following figure: 

  

  Yellow: VCC

  Green: I2C_SCL

  Blue: I2C_SDA

   I found that there was a 10us drop at I2C_SCL and I2C_SDA during power on.

   How did this drop come?

  Thanks.

[Ricardo_Zamora]

Hello,

Hope you are doing well. I sent you a private message.

Have a nice day!

Ricardo