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Microchip mXT288UD-AMT触摸屏控制器解决方案

Microchip公司的mXT288UD-AMT/mXT288UD-AMB 1.0采用独到的电荷传输采集引擎来实现Microchip公司的专利电容检测方法.和最新的CPU耦合,整个触摸屏检测解决方案能在最短时间内以高度精确度测量,分类和跟踪大量的手指触摸.这种测量可以是相互的和自电容测量,而自电容测量用来扩大相互的电容测量,以得到可靠的触摸信息.汽车应用时具有AEC-Q100资质,开发时依据汽车SPICE® Level 3有资质的流程,并和CISPR 25兼容.器件采用maXTouch®自适应检测触摸屏技术,多达12 X(发送)线和24 Y(接收)线,最多有288个接点可定位于触摸传感器上,触摸屏尺寸为6.34吋(2:1比例),传感器电极间隔6mm,也可提供不同电极间隔和传感器材质的其它尺寸,支持多种触摸,多达实时10个同时发生的触摸跟踪.支持包括TFT,LCD(ITPS,IPS)和OLED在内的触摸屏.器件的触摸具有湿度/水滴补偿,凝结的水珠或水滴多达22mm直径时不会出现误触摸,一个手指跟踪凝结的水珠或水滴多达22mm直径.本文介绍了mXT288UD-AMT/mXT288UD-AMB主要特性和AVR-IoTWx开发板主要特性,概述图和电源框图,电路图,PCB装配图.

 

The mXT288UD-AMT/mXT288UD-AMB 1.0 uses a unique charge-transfer acquisition engine to implement Microchips patentedcapacitive sensing method. Coupled with a state-of-the-art CPU, the entire touchscreen sensing solution can measure, classifyand track a number of individual finger touches with a high degree of accuracy in the shortest response time. ThemXT288UD-AMT/mXT288UD-AMB 1.0 allows for both mutual and self capacitance measurements, with the selfcapacitancemeasurements being used to augment the mutual capacitance measurements to produce reliable touch information.

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