Voltage level for I2C slave devices on the OMAP3530

Mark P55787

Other Parts Discussed in Thread: OMAP3530, TXS0102

I am working on a project that is using the OMAP3530. We would like to connect slave devices on the available I2C bus, but the slave devices are 3.0V and 3.3V. Does the OMAP3530 support I2C slave devices that are greater than 1.8V without using level shifters?

Thanks in advance for any help that can be provided!

over 15 years ago

0 Soren Steen Christensen over 15 years ago

Genius 3685 points

Hi Mark,

OMAP3530 only supports 1V8 I2C. In order to interface 3V0 and 3V3 devices you therefore need a level converter. I'm normally using TXS0102 without any problems. Just take care, that you can't cascade two TXS0102 devices :-)

Best regards - Good luck
Søren

0 Mark P55787 over 15 years ago in reply to Soren Steen Christensen

Prodigy 30 points

Hi Søren,

Thanks for the quick response and answer! I'll look into the TXS0102.

-Mark

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Voltage level for I2C slave devices on the OMAP3530