PCA9306: PCA9306 master and slave side

kerr chang

Genius 4075 points

Part Number: PCA9306

Hi Team

I want use PCA9306DCUR on our system.

but My I2C master is 3.3V , I2C slave is 1.8V

Can I set Masrer to SCL2/SDA2 and Slave set to SCL1/SDA1?

becuse TI SPEC figure 7 show master connector to SDA1/SDA2 , our Voltage need swap

over 8 years ago

0 Miguel Robertson over 8 years ago

TI__Guru 62920 points

Hi Kerr,

The PCA9306 requires that the higher voltage be connected to the VREF2 side, but either side can be used for a master or slave. Figure 7 is just intended to show one example application.

Regards,
Max

Interface

Interface forum

PCA9306: PCA9306 master and slave side