Nuvoton Technology Corporation of America WMS7100100P

Description
The WMS710x is a 256-tap non-volatile linear digital potentiometer available in 10KΩ, 50KΩ, and 100KΩ resistance values. It can be used as a three-terminal potentiometer or a two-terminal variable resistor. The output is determined by the wiper position, which varies linearly between Vss and Vdd terminals based on the content of the volatile Tap Register (TR). The TR is programmed through an Up/Down (Increment/Decrement) interface. Each channel has a non-volatile memory location (NVMEMO) that can be written to by users through the Up/Down interface. Power-on recall is built in, automatically loading the NVMEMO content into the Tap Register.

Features
Drop-in replacements for popular parts
Available output buffer for WMS7101 devices
Single linear-taper channel
256 taps
10KΩ, 50KΩ, and 100KΩ end-to-end resistance
Vss to Vdd terminal voltages
Non-volatile storage of wiper positions with power-on recall
Data storage and potentiometer control through Up/Down (3-wire) interface
Endurance: 100,000 write cycles
Data retention: 100 years
Package options: 8-pin PDIP, SOIC, or MSOP
Industrial temperature range: -40°C to 85°C
Single supply operation: 2.7V to 5.5V

Applications
Audio volume control
Lighting control
Motor speed control
Sensor calibration
Programmable gain amplifiers
Voltage dividers
Variable resistors