【产品】 国产并行口扩展I/O芯片CH351,基于8位并行总线扩展32个GPIO
沁恒推出的CH351是PCI总线的双串口及打印口芯片,基于8位并行总线扩展32个GPIO,独立输入或者输出,支持中断,用于PCI转双串口、PCI转打印口(并口)。CH351芯片提供了通用的8位被动并行接口,可以方便地挂接到各种8/16/32位单片机、DSP、MCU的系统总线上,并且可以与多个外围器件共存。
应用框图
功能简介
并口操作:CH351芯片提供了通用的8位被动并行接口,可以方便地挂接到各种8/16/32位单片机、DSP、MCU的系统总线上,并且可以与多个外围器件共存
扩展GPIO:
32个GPIO被分为4组,单次并口操作对应一组8个GPIO引脚,在CH351芯片内部,每个GPIO引脚都分别对应有一个方向控制位和一个内部输出数据位,CH351芯片的扩展GPIO引脚输入能够兼容CMOS和TTL电平,内置微弱上拉电阻,输出CMOS电平,兼容TTL电平,并且具有低电平10mA 高电平5mA的驱动能力。
中断:
CH351 芯片提供了一个低电平有效的中断请求输出引脚INT#,可以连接到单片机的中断输入引脚或普通输入引脚,CH351将在方向控制位设置为输入的GPIO脚检测到低电平时产生中断请求。
复位:
CH351芯片的复位引脚RST#用于使CH351恢复到默认状态;当RST#输入为低电平时,X0~X31引脚的内部输出数据位全部恢复为1 的状态;并且X0~X31的方向控制位全部恢复为0 即输入状态。
封装
引脚
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本文由Topaz转载自沁恒,原文标题为:并行口扩展I/O芯片CH351,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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PCI、PCIE多串口方案及PCI、PCIE打印口方案
描述- 本资料详细介绍了PCI和PCIe多串口方案及打印口方案,包括串口和并口的定义、分类、应用说明等。资料涵盖了不同型号的芯片解决方案,如CH351Q、CH353L、CH382L等,以及对应的串口和并口配置。此外,还提供了安装与使用指南,包括驱动安装、串口号分配、波特率设置等,并说明了打印口定址的兼容性。
型号- CH384L,CH352L,CH358S4P,CH358SSP,CH382L,CH353S4,CH355S4,CH384S28,CH382P,CH382SS,CH358S8,CH356S8,CH356S6,CH359L,CH359S16,PCIMSER8,CH438L,CH355L,CH353SSP,CH351SSP,PCIMSER4,CH365P,CH432Q,CH384S4P,CH384SSP,CH353L,CH351Q,CH351P,CH384S8,CH382SSP,CH384S4,CH352SP,CH382CRD,CH352SS,PCIMS24,CH351SS,CH354CRD,CH358L,PCIMSER,CH356SSP,CH356S4P,CH354L,CH352SSP,CH356L
【应用】沁恒USB转串口芯片CH340N在便携式低功耗产品上的应用,外围器件少且成本低
作者开发低功耗便携式产品,在前期的开发验证过程中需要用到串口输出调试信息,沁恒科技推出的一款USB转串口芯片CH340N采用SOP-8的封装形式尺寸小,而且成本低满足设计要求。
沁恒(WCH)USB转串口芯片选型表&Pin To Pin对照表
目录- USB转单/多串口芯片 PinToPin替换型号总表 芯片参数表
型号- PL2303系列,FT232R,PL2303GL,CH9103M,CH343G,CH9143,FT230XQ,CH9102,CH9101,CP210X系列,CY7C65213,CH343K,FT230XS,CH347,CY7C65213系列,FT232RQ,CP2105,CP2104,CH9326,CP2109,CH341T,CP2102N-GQFN24,CP2102N-GQFN28,CH9104L,CH9342G,PL2303GC,CH9101系列,XR21B1422,CH342F,CH342K,CP2102,CH342,CP2101,CH344Q,CH340K,CH9101Y,PL2303HXD,CP210X,CH340N,CH9101N,CH340T,PL2303,CY7C65213(A),CH9101R,XR21V1414,CH9101U,CH9101H,CH341B,CH341A,CH341F,FT230X,FT232RL,CH343P,CH347T,CH9102X,CH9103,CH9340K,CH9340C,CH9344L,CH9102系列,CH340E,CH348L,CH340C,CH340B,CH348Q,CH344L,CH340G,CH9102F
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