Anonymous
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Jul 21, 2014
02:11 AM
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Jul 21, 2014
02:11 AM
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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PSoC 3
2 Replies
Jul 21, 2014
02:58 AM
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Jul 21, 2014
02:58 AM
You have to connect both Gnds. One of the kits needs pull-up resistors for Sclk and Sdata.
Bob
Jul 21, 2014
04:35 AM
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Jul 21, 2014
04:35 AM
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.