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
Resources:
1. Working with Pico, Raspberry PI, Arduino Uno and STM32
2. CH9121 Serial control instruction set