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eBay 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 Product Size: CH9121 serial port to Ethernet module is equipped with CH9121 network serial port transparent transmission chip. CH9121 internally integrates TCP/IP protocol stack, which can realize two-way transparent transmission of network data packets and serial port data. It has 4 types: TCP CLIENT, TCP SERVER, UDP CLIENT, UDP SERVER Working mode, the serial port baud rate can support up to 921600bps, can be easily configured through the host computer software or serial port commands, convenient and fast. Parameter: 1. Built-in Ethernet media transport layer (MAC) and physical layer (PHY) 2. Realize two-way transparent transmission of serial data and network data 3. Support 10/100M, full-duplex/half-duplex adaptive Ethernet interface, compatible with 802.3 protocol 4. Support MDI/MDIX line automatic conversion 5. Support DHCP to obtain IP address automatically, support DNS domain name access 6. Set the chip working mode, port, IP and other network parameters through the host computer software serial AT command 7. Working mode supports TCP CLIENT, TCP SERVER and UDP CLIENT, UDP SERVER 4 modes 8. Serial baud rate support 300bps~921600bps 9. Serial TTL level, compatible with 3.3V and 5V 10. The serial port supports full-duplex and half-duplex serial communication, and supports RS485 transceiver automatic switching 1 1. Support DHCP to obtain IP address automatically 12. Support 0-2000ms serial timeout setting 13. Support DNS domain name system 14. Support KEEPALIVE mechanism 15. Supply voltage: 3.3V/5V Interface Description:
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