> 5.9 | Characteristics of the I 2C interface

> Table 35: | Characteristics of the I 2C interface

> Function | Signal name | IO | Signal form and level | Comment
> I 2C interface | I2CCLK_SPICLK | O | R O ≈ 33Ω VOLmax = 0.25V at I = 2mA VOHmin = 2.50V at I = -0.5mA VOHmax = 3.05V | I2CDAT is configured as Open Drain and needs a pull-up resistor in the host application. According to the I 2C Bus Specification Version 2.1 for the fast mode a rise time of max. 300ns is permitted. There is also a maximum VOL=0.4V at 3mA specified. The value of the pull-up depends on the capacitive load of the whole system (I2C Slave + lines). The maximum sink current of I2CDAT and I2CCLK is 4mA. If lines are unused keep pins open.
> | I2CDAT_SPIDO | I/O | R O ≈ 33Ω VOLmax = 0.25V at I = 2mA VILmax = 0.8V VIHmin = 2.0V VIHmax = 3.05V