Pull-up resistor

nRF54LM20A | nRF54LM20B Datasheet

1000 kbps bit rate is supported when using H0D1 drive strength, 1 kΩ pull-up resistor, and maximum 50 pF bus capacitance. For other bit rates, see the following figure.

Figure 8. Recommended TWIM pull-up value vs. line capacitance
Recommended TWIM pullup value vs. line capacitance
  • The I2C bus specification allows a maximum line capacitance of 400 pF.
  • The value of internal pull-up resistor (RPU) for nRF54LM20A and nRF54LM20B can be found in GPIO Electrical Specification.