ZHCSJL4A February 2019 – March 2019 BQ25883
PRODUCTION DATA.
All transactions begin with a START (S) and are terminated with a STOP (P). A HIGH to LOW transition on the SDA line while SCL is HIGH defines a START condition. A LOW to HIGH transition on the SDA line when the SCL is HIGH defines a STOP condition.
START and STOP conditions are always generated by the master. The bus is considered busy after the START condition, and free after the STOP condition.
Figure 26. START and STOP conditions on the I2C bus