MCP4231 pot equivalent, 7/8-bit single/dual spi digital pot.
* Single or Dual Resistor Network options
* Potentiometer or Rheostat configuration options
* Resistor Network Resolution
- 7-bit: 128 Resistors (129 Steps) -.
* Internal weak pull-up on all digital inputs
* Wide Operating Voltage: - 2.7V to 5.5V - Device Characteristics
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