CH344Q是一款USB总线的转接芯片，实现USB转四个异步串口UART0/1/2/3功能，用于为计算机扩展异步串口，或者将普通的串口设备或者MCU直接升级到USB总线。
USB转4串口芯片CH344
CH344Q为480Mbps高速USB设备接口，CH344L为12Mbps全速USB设备接口。
内置固件，仿真标准串口，用于升级原串口外围设备，或者通过USB增加额外串口。
计算机端Windows操作系统下的串口应用程序完全兼容，无需修改。
支持免安装的操作系统内置CDC类驱动程序或者多功能高速率的VCP厂商驱动程序。
硬件全双工串口，内置独立的收发缓冲区。
CH344Q支持通讯波特率1200bps～6Mbps，CH344L支持1200bps～230400bps。
串口支持8个数据位，支持奇校验、偶校验以及无校验。
每个串口内置1024字节的接收FIFO，512字节的发送FIFO。
支持常用的MODEM联络信号CTS和RTS。
支持CTS和RTS硬件自动流控。
支持半双工，提供串口正在发送状态指示TNOW，可用于控制RS485收发切换。
支持最多16路GPIO输入输出功能。
通过外加电平转换器件，支持RS232、RS485、RS422等接口。
内置EEPROM，可配置芯片VID、PID、最大电流值、厂商和产品信息字符串等参数。
单一3.3V供电。
提供LQFP48无铅封装，兼容RoHS。
CH344Q
CH344L,全新原装当天发货或门市自取，量大价优，电子元器件BOM表一站式配单配套,稳定供应,因产品过多原因我们未对一.一产品进行参数描述，如需了解更多产品信息和价格欢迎咨询和购买请联系我们的工作人员.
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