Nuvoton Technology Corporation of America WMS7204050P

Description
256-tap, quad-channel non-volatile digital potentiometer
End-to-end resistances: 10K, 50K, 100K
Can be used as a three-terminal potentiometer or two-terminal variable resistor
Output determined by wiper position, which varies linearly between VA and VB terminals
Settings stored in volatile Tap Register (TR)
Settings can be provided via SPI interface or non-volatile memory (NVMEMO-3)
Wiper position settings can be saved to NVMEMO-3
Four independent channels in 20-pin PDIP, SOIC, and TSSOP packages
Operating voltage range: 2.7V to 5.5V

Features
256 taps per potentiometer
Four independent channels
End-to-end resistances: 10K, 50K, 100K
Selectable output buffer for each channel
SPI Serial Interface for data transfer and potentiometer control
Daisy-chain operation for multiple devices
Nonvolatile storage of four wiper positions per channel with power-on recall from NVMEMO
Low standby current (1μA Max. with output buffer inactive)
Endurance: 100K typical stores per bit
Register Data Retention: 100 years
Industrial temperature range: -40°C to 85°C
Wide operating voltage range: 2.7V to 5.5V