The MICROCHIP TECH. MCP4021/2/3/4 series are non-volatile, 6-bit digital potentiometers designed for versatile applications. These devices offer a simple Up/Down serial interface for wiper control and incorporate WiperLock technology, allowing for secure storage of calibration settings in EEPROM. Available in various resistance values (2.1kΩ, 5kΩ, 10kΩ, or 50kΩ), they are suitable for applications requiring adjustable resistance with non-volatile memory functionality.