Waveshare 2-CH UART To Ethernet Converter
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DESCRIPTION
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
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
Resources & Services
WIKI: 2-CH_UART_TO_ETH
* 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 | RS485 TO ETH (B) | RS232/485 TO ETH | 2-CH-UART-TO-ETH | |
|---|---|---|---|---|---|
| Processor | Cortex-M0 | Cortex-M4 (up to 120MHz frequency) | CH9121 | ||
| ETHERNET | |||||
| Type | RJ45 (10/100Mbps auto-negotiation) | ||||
| UART | |||||
| Type | UART | RS485 | RS232+RS485 (allows concurrent operation) | UART | |
| Baudrate | 600bps~460.8Kbps | 600bps~230.4Kbps | 300bps ~ 115.2Kbps | 600bps~230.4Kbps | 300bps~921.6Kbps |
| Hardware flow | NOT supported | supported | NOT supported | ||
| Data bit | 5, 6, 7, 8 | ||||
| Stop bit | 1, 2 | ||||
| Parity bit | None, Even, Odd, Space, Mark | ||||
| INTERFACE PROTECTION | |||||
| Power supply | reverse-proof, ESD protection, anti-surge | ||||
| Ethernet | 1.5KV electromagnetic isolation | ||||
| RS485 | - | 2KV ESD protection, 2.2KΩ pull up/down registers | 2KV anti-surge | 2KV ESD protection, 2.2KΩ pull up/down registers | - |
| Other | - | - | - | lightningproof, over-current protection | - |
| OPERATING MODE | |||||
| Type | TCP Server, TCP Client, UDP Server, UDP Client, etc. | ||||
| TCP Server | customizable 1~16 Clients | supports 30 Clients | supports 2-ch Socket, 8 Clients per ch | customizable 1~16 Clients | |
| MISC | |||||
| Features | customized heartbeat packets, customized registration packets, customized webpage, RFC2217-like protocol, KeepAlive, timeout auto reboot, short connection, firmware upgrade via network | KeepAlive, firmware upgrade via network | |||
| - | - | Modbus gateway, MQTT/JSON to Modbus | Modbus gateway, Websocket (webpage to serial) | - | |
| Configuration | Built-in webpage, Host computer config software, Serial commands | Host computer config software, Serial commands | |||
| Power supply | 3.3V/5V | 5~7V | 9~24V | 5~36V | 3.3V/5V |
| Operating current | 150mA@5V | 110mA@5V | TBD | 86.5mA@5V | 140mA@5V |
| Operating temp. | -25～75℃ | -40～85℃ | |||
| Storage temp. | -40～105℃ | -55℃~125℃ | |||
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