Overview CH341A USB conversion module equipped with CH341A chip, CH341A is a USB bus adapter chip, through the USB bus to provide asynchronous serial port, parallel port, print and 2 line and 4 line common synchronous serial interface, the module can be used for serial expansion, I2C interface EEPROMSPI interface FLASH and STC MCU programming, program debugging, data acquisition, brush machine etc. Interface description: VCC, RXD, TXD, GND: UART interface VCC, SDA, SCL, GND: I2C interface MISO,MOSI,SCK,CS2,CS1,CS0,GND,VCC: SPI interface The 10P_2.54mm pin is print port and EPP/MEM port, pins definition can refer to manual.
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