双数字可编程电位计（ DPP⑩ ）与64丝锥和SPI接口 Dual Digitally Programmable Potentiometers DPP™ with 64 Taps and SPI Interface
The CAT5411 is two digital POTs integrated with control logic and 16 bytes of NVRAM memory. Each digital POT consists of a series of 63 resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 6-bit control register WCR independently controls the wiper tap switches for each digital POT. Associated with each wiper control register are four 6-bit non-volatile memory data registers DR used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a SPI serial bus. On power-up, the contents of the first data register DR0 for each of the two potentiometers is automatically loaded into its respective wiper control register.The CAT5411 can be used as a potentiometer or as a two terminal, variable resistor. It is intended for circuit level or system level adjustments in a wide variety of applications.
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