Product Description
Features:
1. Not only the power lamp PWR, but also the TXD and RXD indicators, so that you can intuitively understand whether the product is working without the instrument
2. Support for WINDOWS 98/ME/2000/XP/Server 2003/VISTA/Server 2008/Win7/Win8 32 bit/64 bit/win10 64 bit
3. Small volume performance
4.3v3/5V optional
5. Micro-USB interface data cable
6. With 3.3V regulator chip, ultra stable operation, compatible with 5v, 3.3V microcontroller program download and debug!
7. Module size 15.7mm*15.7mm, PCB size 16.02mm*17.4625mm

STC Microcontroller Download Mode:
1) Wiring as follows: (only need to connect 3 wires)
TXD terminal of USB downloader -> connect single chip microcomputer P3.0 (RX)
RXD end of USB downloader -> connect single chip microcomputer P3.1 (TX)
GND end of USB downloader -> connect single chip GND
2) The development board or small system uses a separate power supply. After connecting the cable, it will be found that even if the development board switch is turned off, the power indicator of the development board will be lit (weak). This is a normal phenomenon, or download the STC according to the serial port. Series MCU method download (power supply needs to be cold start once).

Package Includes:
2 x CH340E MSOP10 USB to TTL Converter Module
2 x 6pin header
1 x 12pin male and female DuPont cable
1 x Micro USB cable