CH9121 STM32 Serial Port RS232 to Ethernet Network Module TTL Transmission Module Industrial Microcontroller

Overview: RS232 to Ethernet, 5~18V power supply, one-button setting parameters, AT means to modify the module parameters in real time, automatically obtain IP, one button to restore factory settings. The module is a universal serial-to-Ethernet transparent transmission device, which can be connected to MCUs such as 51, AVR, PIC, ARM, etc. or other serial port (TTL) devices. Features: - Support 5V or 3.3V power supply, choose one; - Serial TTL level, pin IO compatible with 3.3V and 5V voltage; - Serial port baud rate supports 300 ~ 921600bps; - The serial port supports full-duplex and half-duplex serial communication, and supports RS485 transceiver automatic switching; - Two-way transparent transmission of serial data and network data; - Support MDI/MDIX polarity automatic conversion, cross-connect or directly connect the network cable to any connection, the module automatically switches; - Support DHCP to automatically obtain IP address and support DNS domain name access; - Support KEEPALIVE mechanism; - Support virtual serial port software, virtualize the network port into a computer COM port; - Working mode supports TCP CLIENT, TCP SERVER, UDP CLIENT and UDP SERVER 4 modes; - Supports 10/100M, full-duplex/half-duplex adaptive Ethernet interface, compatible with 802.3 protocol; Set the serial port and network parameters of the chip through software and serial commands, and save the parameters after power off; - Search and query all devices in the LAN through the UDP broadcast protocol to facilitate unified management of devices; Speciications: 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 optional 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 optional 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. Package Included: 1 x CH9121 Serial Port RS232 to Ethernet Network Module