2005-12-22 09:08 PM
What is the use Pull Up resistor
2005-12-22 04:45 PM
Dear,
Could any body tell me what is the need for pull up resistance in a ckt? e.g why do we put pull up on I2C SDA & SCL bus? What factors determine the value of the resistance and how to calculate it?? rgds, Arup2005-12-22 09:08 PM
Hi,
The pull-up resistor value depends on your application (supply voltage, bus capacitance, number of connected devices. You will find all the needed information to calculate the pull-up resistance in the I2C bus specification. Best regards Laurent