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控制DS1803数字电位器使用一个8051微处理器产生两线信

消耗积分:5 | 格式:rar | 大小:159 | 2009-04-28

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Abstract: This article demonstrates a hardware and software solution for controlling the DS1803 using a Dallas Semiconductor 8051-compatible microprocessor, the DS87C520. It describes how to generate the 2-wire signaling required for communication via two port pins on the microcontroller. A basic schematic shows the necessary connections between the microprocessor and the DS1803, and 8051 assembler code provides a small application for controlling the chip’s two digital potentiometers using different write modes. After each write cycle, the application reads back the information from the DS1803 and displays it on a PC via a serial port to demonstrate a properly operational read function. Source code for the application described in this article is included.
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