How to change the GPIO output voltage of DA14585?

Question

Hi, 
 
 Currently, I use the VBAT3V=3V to supply the DA14585, and want to communicate with 1.8V I2C sensor. Is there any function that can change the gpio output voltage to 1.8v? 
 
 Thanks, 
 Iris

JH_Renesas · Answer

Hi Iris， 
 Thank you for posting your questions online. 
 Unfortunately, the voltage for GPIO only can be 3v/1v, you need add a voltage switch between the I2C bus. 
 
 BR, 
 JH_Renesas