Hysteresis of SCL and SDA
时间: 2024-05-26 13:17:12 浏览: 21
Hysteresis is the difference in voltage required to change the state of a signal from low to high and from high to low. In the case of SCL (serial clock) and SDA (serial data) signals used in I2C communication, hysteresis helps to ensure reliable data transfer by minimizing the effects of noise and other signal distortions.
When hysteresis is applied to SCL and SDA signals, it means that the voltage levels at which the signals switch between low and high states are different. This ensures that even if there is some noise or other distortions on the signal, it won't cause false switching of the signal, which could lead to incorrect data transfer.
In I2C communication, the hysteresis values for SCL and SDA signals are typically specified by the device manufacturer and can vary depending on the requirements of the specific device. In general, hysteresis values of around 0.1V to 0.3V are common for these signals.