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PSoC 5, 3 & 1 MCU

Anonymous
Not applicable

 I have CY8C38 PSOC development kit and I want to make connections of I2C hardware. What to do with the ground of the Vcc supply. How to connect two kits with each other. 

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2 Replies
JoMe_264151
Expert II

You have to connect both Gnds. One of the kits needs pull-up resistors for Sclk and Sdata.

   

 

   

Bob

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ETRO_SSN583
Esteemed Contributor

You can connect two I2C busses operating off different Vdd supplies

   

via use of level shifters designed for that purpose.

   

 

   

    

   

          http://www.i2c-bus.org/level-shifting/

   

 

   

You can also galvanically isolate the busses.

   

 

   

    

   

          http://www.ti.com/product/iso1540

   

 

   

Regards, Dana.

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