The Renesas Digitally Controlled Variable Resistor is integrates four digitally controlled potentiometers (DCP) configured as variable resistors on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated Wiper Register (WR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper.

Four variable resistors in one package
256 resistor taps - 0.4% resolution
I2C serial interface
Wiper resistance of 70Ω typical 3.3V
Standby current <5μA max
50kΩ, 10kΩ total resistance
Pb-free plus anneal available (RoHS compliant)