The MCP4551-103E/MS is a single I2C Digital Potentiometer with non-volatile memory. It supports potentiometer wiper configuration and EE memory type. The SCL pin is the serial interfaces serial clock pin. This SCL pin is connected to the host controllers SCL pin. The MCP4551 slave device, so its SCL pin accepts only external clock signals. The SDA pin is the serial interfaces serial data pin. This pin is connected to the host controllers SDA pin. The SDA pin is an open-drain N-channel driver.
