CH341A USB to SPI I2C IIC UART TTL ISP Serial Adapter Module EPP/MEM Converter For Serial Brush Debugging RS232 RS485 Features: . Full-speed USB device interface, compatible with USB V2.0, Standard USB-A male design; Direct power supply from USB connectin to PC.Analogue standard serial port, for upgrading original serial peripherals, or increased additional serial port via USB; Support 3.3V and 5V TTL target system, the serial application is fully compatible with the computer under the Windows operating system, without need for modification; Support 5, 6, 7 or 8 data bits, to support odd parity, even parity, blank signs and no parity; Support the serial port to send control signal and MODEM liaison signal of transmission rate and serial receiver ready signal ; Plus level conversion module, support RS232, RS485 and other interfaces; (supporting modules are sold separately) Two parallel port interface way: EPP mode and MEM way; USB to parallel port can be used for simple digital I / O control; Support a variety of serial communication mode, UART, I2C, SPI, etc.; Support 2-wire and 4-wire synchronous serial interface, I2C support 4 kinds of transmission speed; Perfectly support STC MCU program download and debug, STC official recommended program; Support the outwards output voltage, optional 3.3V/ 5V or no output; Support working status indication; Dual interface output; Hardware full-duplex serial port, built-in transceiver buffer area, support the communication baud rate 50bps ~ 2Mbps. Support WINDOWS 98/ME/2000/XP/server 2003/VISTA/server 2008/WIN 7/64/32-bit. Application: Simulation standard serial ports, for upgrading original serial peripherals, or increased via USB. Need I2C, SPI, UART, TTL serial port and other occasions; Electronic engineers debugging Downloads; Debugging of a variety of hardware systems, software systems, ; Serial ports flash _x000D_