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Clocks

anonymous-sj
Level 1
First question asked Welcome!
Level 1

I am planning to use CY29421FLXI-ND on 3.3V rail, but looks like I2C port is only spec at 2.5V max. is this correct?

Can i pull up I2C signals to 3.3V for this Clock? is it 3.3V tolerant?

 

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PradiptaB_11
Moderator
Moderator 500 replies posted 250 solutions authored 250 replies posted
Moderator

Hi @anonymous-sj ,

When the CY29421 device is e-fused then 2.5 V is the recommended value. For serial communication like I2C you can operate the rails at 3.3 V. You will not experience any issues as the device as 3.3 V tolerant.

Thanks,

Pradipta.

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PradiptaB_11
Moderator
Moderator 500 replies posted 250 solutions authored 250 replies posted
Moderator

Hi @anonymous-sj ,

When the CY29421 device is e-fused then 2.5 V is the recommended value. For serial communication like I2C you can operate the rails at 3.3 V. You will not experience any issues as the device as 3.3 V tolerant.

Thanks,

Pradipta.

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