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Forum Index : Microcontroller and PC projects : I2C pullup voltage?
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Bizzie Senior Member Joined: 06/07/2014 Location: AustraliaPosts: 185 |
I have a logging system which has been successfully working for nearly 3 years. It consists of a PicAxe 20X2 acting as the master scanning up to 5 PA 20X2's using I2C. I would like to replace the master with a CGColorMax2 so I can get access to the data over the Internet and also be able to write the data to SD. What voltage should I pull the two I2C signal lines to? The MM pins are 5V tolerant so I assume it would be 5 volts. Rob White |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5905 |
5V or 3.3V depending on the requirements of the other devices. Jim VK7JH MMedit MMBasic Help |
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