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.
Hello,
Hope you are doing well. I sent you a private message.
Have a nice day!
Ricardo