TPS2388: I2C rising/falling time too fast

Eric Fang1

Intellectual 620 points

Part Number: TPS2388

Dears,

Our measurement value result is below 20ns, is any way to adjust?

or this is not critical item can be waive?

Eric

over 3 years ago

0 Penny Xu over 3 years ago

TI__Genius 15685 points

Hi Eric,

You can adjust your capacitance and resistance on your I2C bus to meet the timing requirement. Thanks.

Best regards,

Penny

0 Eric Fang1 over 3 years ago in reply to Penny Xu

Intellectual 620 points

Hi Penny,

If signals too fast will effect communication? or it's ok will not cause any warning?

In my opinion signals too fast seems like didn't cause problem if adjust capacitance and resistance not working.

Eric

+1 Penny Xu over 3 years ago in reply to Eric Fang1

TI__Genius 15685 points

Hi Eric,

The rising and falling time being less than the spec shouldn't cause functional failures but it is not compliant to the I2C spec. Thanks.

0 Eric Fang1 over 3 years ago in reply to Penny Xu

Intellectual 620 points

Hi Penny,

Is any chance to modify rising/falling time criteria?

Possible cancel minimum value?

Eric

0 Penny Xu over 3 years ago in reply to Eric Fang1

TI__Genius 15685 points

Hi Eric,

We can't modify our datasheet spec as this is I2C compliant spec. You can add resistors and capacitors to increase the rising/falling time to be compliant. Thanks.

Best regards,

Penny

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TPS2388: I2C rising/falling time too fast