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

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                  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


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