CH9121 Serial Port to Ethernet Network Module

Product Details CH9121 Serial Port to Ethernet Network Module TTL Transmission Module Industrial Microcontroller CH9121 has Built-in TCP/IP protocol stack, which can provides serial data and network data’s two-way penetrate transparent. CH9121 has TCP-Client, TCP-Server and UDP 3 kinds of work mode, supports serial baud rate up to 921600bps, can be easily configured by host PC software. Ethernet Parameters - Number of ports: 1 - Interface standard: RJ45 interface - LAN Ethernet: 10 / 100Mbps - Data cache: 6K bytes - Protection: 2KV electromagnetic isolation - Network protocols: IP, ARP, TCP, UDP, ICMP, IGMP, DCHP and so on Serial Port Parameters - Number of ports: 1 - Interface standard: TTL serial port, 2.54MM pin, 3.3V or 5V level - Baud rate: 300 ~ 921600bps - Data bits: 5,6,7,8,9 - Stop bit: 1,2 bit - Parity: no parity, odd parity, even parity - Flow Control: None - Cache: 2K bytes Supporting Software Parameter configuration: network configuration software, serial AT command Module testing: test software (network, serial one) Basic Parameters - Size 43mmx23mmx14.5mm (length x width x height) - Working voltage DC3.3V / 5V - Operating current 200mA @ 5V - Power consumption 1W - Operating temperature -40 ~ 85 ° C - Storage temperature -55 ~ 125 ° C Pin Description 1. RESET: Factory reset pin, the module power-on detection, active low 2. DIR: RS485 receive, send switch control pin 3. TCPCS: TCP client mode, the port connection status indicator pin, the connection is successful output low 4. RUN: module running status indication pin, input 2Hz square wave 5. GND: Power Ground Pin 6. 3.3V: 3.3V DC power input pin, greater than 200mA, and 5V DC power supply alternatively 7. GND: Power Ground Pin 8. 5V: 5V DC power input pin, greater than 200mA, and 3.3V DC power supply can choose one of two 9. RSTI: reset pin, the internal pull-up, low-effective, can not be vacant 10. CFG: serial port configuration module enable pin, built-in pull-up, low-effective, do not have to be vacant 11. RXD: Serial data receive pin, serial port TTL level, compatible with 3.3V and 5V 12. TXD: serial data transmission pin, serial TTL level, compatible with 3.3V and 5V 13. GND: Power Ground Pin 14. 3.3V: 3.3V DC power input pin, greater than 200mA, and 5V DC power supply alternatively 15. GND: Power Ground Pin 16. 5V: 5V DC power input pin, greater than 200mA, with the optional 3.3V DC power supply can be