摘要： DS3930包含6个256位的非易失性电位器，使DS3930需要多个电压基准的应用的理想设备。 DS3930还具有四个通用，非易失性I / O引脚可以监视数字输入或提供一个数字输出。本应用笔记提供的例子使用的DS3930作为一个参考电压和数字I / OMaxim > App Notes > DIGITAL POTENTIOMETERS Keywords: DS3930, potentiometer, non-volatile, nonvolatile, voltage reference, digital I/O, LCD, fan, Jun 25, 2003 photodiode, comparator, pressure sensor APPLICATION NOTE 2140 Examples Using the DS3930 as Voltage References and Digital I/O Abstract: The DS3930 contains six 256-position nonvolatile potentiometers, which makes the DS3930 an ideal device for applications needing multiple voltage references. The DS3930 also has four general-purpose, nonvolatile I/O pins that can monitor a digital input or supply a digital output. This application note provides examples using the DS3930 as a voltage reference and digital I/O. Introduction The DS3930 contains six 256-position nonvolatile (NV) potentiometers (see Figure 1), which makes the DS393……