Interfacing 5v I2C device with cc2530.

Dhanraj

Guru 14820 points

Other Parts Discussed in Thread: CC2530

Hello,

I want to interface a Sensor which runs on 5V supply and communicates using I2C with c22530 MCU (which runs on 3.3v).

how can I interface my sensor with cc2530 MCU.

Regards

Dhanraj

over 9 years ago

0 YiKai Chen over 9 years ago

Guru 735685 points

I think you would need a level shifter to do it.

0 Igor Sherer over 9 years ago

Guru 31280 points

Usually 5V sensors have separate VDD rail for interfaces (such as I2C), or can be connfigured to support 0-3V logic levels.
Could you attach a link to a datasheet of this sensros?

0 Dhanraj over 9 years ago in reply to Igor Sherer

Guru 14820 points

here is link for the sensor.
www.omron.com/.../d6t.html

0 YiKai Chen over 9 years ago in reply to Dhanraj

Guru 735685 points

According to datasheet, I think you have to use level shifter.

0 Dhanraj over 9 years ago in reply to YiKai Chen

Guru 14820 points

Thanks a lot!

0 YiKai Chen over 9 years ago in reply to Dhanraj

Guru 735685 points

You are welcome.

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Interfacing 5v I2C device with cc2530.