I2C rise and fall time for ST25DV04K for speed of 100kHz

[Magvel]

Hi,

The ST25DV supports I2C speeds upto 1MHz, for which the datasheet has mentioned the rise and fall time using the RC time constant of <150ns according to I2C standards.

We are using it at 100kHz only but there is no mention of rise and fall time for 100kHz ( acc to I2C standard it should be <1000ns), and the following point is mentioned in datasheet as attached.

Does this mean that ST25DV supports only <150ns rise and fall time even if it used only at 100kHz?

 

[JL. Lebon]

Hello, 

The datasheet is only providing figures for 1Mhz clock as this is the more constraint one.

For 100KHz, constraint can be relaxed, and the RC time should be < 1000ns. The ST25DV does support rise and fall time > 150ns when the clock is lower than 1MHz.

Best regards.