- Description
Details
2-CH UART to Ethernet Converter, serial port transparent transmission module
2-CH UART TO Ethernet Converter
Serial port transparent transmission
Features at a glance
The 2-CH UART TO ETH provides an easy way to communicate between UART TTL and RJ45 Ethernet, allowing bi-directional transparent data transmission. It is easy to use, along with features like fast data rate, low power consumption, high stability, suits applications such as safety & security, IoT, and so on.
- Embedded Ethernet MAC and PHY layers
- Bi-direction transparent data transmission between UART and Ethernet
- 10/100M, full-duplex/half-duplex auto-negotiation Ethernet interface, 802.3-compliant
- Auto-MDI/MDIX, detect and switch cable type automatically
- Supports DHCP auto-obtained IP and DNS domain access
- Network parameter configuration like chip operating mode, port, IP, via host computer software or UART command
- Four operating modes: TCP CLIENT, TCP SERVER, UDP CLIENT, UDP SERVER
- 2-CH UART concurrent operation, standalone transparent transmission for each channel
- Full-duplex or half-duplex UART communication, supports RS485 RX/TX auto switch
- Supports virtual serial port software (provided)
- KEEPALIVE mechanism support
- Comes with development resources and manual (examples for Pico/Raspberry Pi/Arduino/STM32)
Specifications
| Operating voltage | 3.3V/5V | Operating current | 140mA |
|---|---|---|---|
| Operating mode | TCP/UDP | UART baudrate | 300bps ~ 921.6Kbps |
| UART TTL level | 3.3V / 5V compatible | Storage temperature | -55℃ ~ 125℃ |
| Operating temperature | -40℃ ~ 85℃ | Dimensions | 53.00 × 22.00mm |
control interface
supports host boards including Raspberry Pi/Arduino/STM32...
Application example
Bi-direction transparent transmission between UART TTL and wired Ethernet
Extend the communication distance for serial devices
Manage multi serial client devices remotely via one web server
Manage serial server remotely via multi web clients
What's On Board
- UART 1 connection status indicator
- UART 2 connection status indicator
- Power indicator
- CH9121 control pins
- CH9121 driver
- AMS1117-3.3V power supply IC
- RT9193-18GB power supply IC
- Ethernet port
Pinout definition
| 5V / 3V3 | power positive, use any pin of 5V/3.3V pins for power supply |
| GND | ground |
| RST1 | external reset input, low active |
| RESET | restore to factory setting, detected when chip poweron, low active |
| TXD1 | asynchronous UART 1 data output (enabled by default) |
| TXD2 | asynchronous UART 2 data output (disabled by default) |
| RXD1 | asynchronous UART 1 data input (enabled by default) |
| RXD2 | asynchronous UART 2 data input (disabled by default) |
| CFG0 | UART config mode, low level to enter configuration, high level to exit configuration |
| RUN | Operating status indicating pin |
| DIR1 | UART 1 RS485 RX/TX switch (connects to external RS485 controller) |
| DIR2 | UART 2 RS485 RX/TX switch (connects to external RS485 controller) |
Outline Dimensions
*measured manually, for reference only
Resources & Services
* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.
Selection guide
| UART TO ETH | RS485 TO ETH | RS232/485 TO ETH | 2-CH UART TO ETH | |
|---|---|---|---|---|
| microcontroller | Cortex-M0 | Cortex-M0 | Cortex-M4 ((Main frequency up to 120MHz)) | CH9121 |
| Ethernet | 10/100Mbps auto-negotiation RJ45 connector | |||
| Protocol: IP, TCP, UDP, ARP, ICMP, DHCP, DNS, HTTP Client | TCP/UDP | |||
| TX cache: 6Kbyte; RX cache: 4Kbyte |
TX cache: 16Kbyte; RX cache: 16Kbyte |
- | ||
| Serial port | UART | RS485 | RS232 and RS485 | UART |
| Baudrate: 600bps~460.8Kbps | Baudrate: 600bps~230.4Kbps | Baudrate: 300~921.6Kbps | ||
| Hardware flow control: none | Hardware flow control: supported | Hardware flow control: none | ||
| Data bit: 5bit, 6bit, 7bit, 8bit | ||||
| Stop bit: 1, 2 | ||||
| Parity bit: None, Odd, Even, Mark, Space | ||||
| RX cache: 800byte | TX cache: 2Kbyte; 2 cache: 16Kbyte |
- | ||
| Framing mechanism: 4-byte packing time, 400 byte length | Framing mechanism: 4-byte packing time, 1600 byte length, configurable | - | ||
| Featured Function | Customized heartbeat packets, customized registration packets, customized webpage, RFC2217-like protocol, KeepAlive mechanism, time-out reboot, short connection, firmware is upgradable via the network | KeepAlive mechanism, firmware is upgradable via the network | ||
| - | Modbus Gateway, Websocket (Web to serial) | - | ||
| working modes | TCP Server, TCP Client, UDP Server, UDP Client, HTTPD Client | TCP Server, TCP Client, UDP Server, UDP Client | ||
| Supported Clients | For TCP Server, customisable of 1~16 connected Clients | For TCP Server, supports 2-ch Socket, up to 8 Clients per channel | For TCP Server, customisable of 1~8 connected Clients | |
| Configuration | webpage, host software, serial commands | host software, serial commands | ||
| Isolation Protection | Power: reverse-proof, ESD protection, anti-surge | |||
| Ethernet: 1.5KV electromagnetic isolation | ||||
| - | 2KV ESD protection, 2.2KΩ pull up/down registers | - | ||
| - | lightningproof, over-current protection | - | ||
| Power Supply | 3.3V/5V | 5~7V | 5~36V | 3.3V/5V |
| Operating current | 150mA@5V | 110mA@5V | 86.5mA@5V | 140mA@5V |
| Operating temperature | -25～75℃ | -40～85℃ | ||
| Storage temperature | -40～105℃ | -55℃~125℃ | ||
| Dimensions | 50.5 × 22.6 × 15mm | 70 × 63.6 × 25mm | 82.8 × 85.7 × 25mm | 53 × 22mm |
Weight: 0.012 kg
Quick Overview
- 2-CH UART TO ETH x1
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