【产品】沁恒USB总线的转接芯片CH340，兼容USB V2.0，支持IEEE-1284规范的双向通讯
沁恒推出的CH340是一个USB总线的转接芯片，实现USB转串口或者USB转打印口。在打印口方式下，CH340提供了兼容USB规范和Windows操作系统的标准USB打印口，用于将普通的并口打印机直接升级到USB总线。
特点
· 全速USB设备接口，兼容USB V2.0。
· 标准USB打印口，用于升级原并口打印机，兼容相关的USB规范。
· 兼容Windows操作系统，在Windows2000及以上系统下无需驱动程序，应用程序完全兼容。
· 支持IEEE-1284规范的双向通讯，支持单向和双向传输打印机。
· 由于是通过USB转换的打印口，所以只能做到应用层兼容，而无法绝对相同。
· 软件兼容CH341，可以直接使用CH341的驱动程序。
· 支持5V电源电压和3.3V电源电压甚至3V电源电压。
· CH340H内置时钟，无需外部晶振。
· 提供SOP-28无铅封装，兼容RoHS，引脚兼容CH341
封装
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本文由犀牛先生转载自沁恒，原文标题为:USB 转打印口芯片 CH340，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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