| ● | Full speed USB device interface, conforms to USB Specification Version 2.0, only needs crystal and capacitance external. |
| ● | Emulate standard serial interface, used to upgrade the former peripheral device, or add excess serial interface through USB. |
| ● | Totally compatible with serial application program in computer endpoint Windows operation system. |
| ● | Hardware full duplex serial interface, set transceiver buffer, supports communication baud rate varies from 50bps to 2Mbps. |
| ● | Supports common MODEM liaison signal RTS, DTR, DCD, RI, DSR and CTS. |
| ● | Through adding level converter equipment to supply RS232, RS485, RS422 and other interface. |
| ● | Supports IrDA criterion SIR infrared communication, supports baud rate varies from 2400bps to 115200bps. |
| ● | For it is through USB converts to serial interface, only compatible with application layer not totally. |
| ● | Software compatible with CH341, using drive of CH341 directly. |
| ● | Support 5V and 3.3V source voltage. |
| ● | Supply SSOP-20 package without lead, compatible with RoHS. |