The MCP41/424X devices are non-volatile, 8-bit (257 wiper steps) digital potentiometers with EEPROM and an SPI compatible interface. The MCP41/42XX family is available with end-to-end resistor values of 5KΩ, 10KΩ, 50kΩ and 100KΩ. These devices offer WiperLock™ Technology which allows the user unlimited reprogramming and locking of the wiper setting. It is useful for equipment that requires factory trimming or recalibration. The MCP41/42XX devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.


  • 8-bit: 256 Resistors with Taps to VSS and VDD
  • SPI compatible interface
  • Automatic Recall of Potentiometer Wiper Settings
  • Resistance Values: 5kΩ, 10kΩ, 50kΩ,100kΩ
  • Low Wiper Resistance: 100Ω (typ.)
  • WiperLock™ Technology to Secure the EEPROM
  • Low-Power Operation: 1µA Max Static Current
  • Wide Operating Voltage: 2.7V to 5.5V

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