摘要： DS1050是一个5位的脉冲宽度调制（PWM）由2线总线控制。这允许一个主设备，一个单一的2线总线控制多达8奴隶（ DS1050和其他2线设备） 。本应用笔记中，演示了通过PC机的串行接口2线总线接口。硬件和软件的要求，并给出从Dallas Semiconductor的FTP站点下载。Maxim > App Notes > Digital Potentiometers Display Drivers Power-Supply Circuits Keywords: fan control, fan speed, brightness control, contrast control, 2 wire bus, 2wire devices, PWM, pulse Dec 17, 2001 width modulator, dc motor, LCD LED backlight APPLICATION NOTE 163 Using DS1050 Programmable PWMs to Control a DC Motor and an LCD LED Backlight Abstract: The DS1050 is a 5-bit pulse-width modulator (PWM) controlled by a 2-wire bus. This allows a single master device to control up to 8 slave (DS1050 and other 2-wire devices) on a single 2-wire bus. In this application note, an interface to a 2-wire bus via a PC serial interface is demonstrated. The hardware and software requirements are given and available for download from the Dallas Semiconductor FTP site. Introduction The D……