Waveshare 20655 2-CH UART TO ETH
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
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 | |
|---|---|---|---|---|
| Processor | Cortex-M0 | 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~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 | - | |
| Other | - | - | lightningproof, over-current protection | - |
| Operating mode | ||||
| Type | TCP Server, TCP Client, UDP Server, UDP Client, HTTPD Client | TCP Server, TCP Client, UDP Server, UDP Client | ||
| TCP Server | customizable 1~16 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, 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 | 5~36V | 3.3V/5V |
| Operating current | 150mA@5V | 110mA@5V | 86.5mA@5V | 140mA@5V |
| Operating temp. | -25~75? | -40~85? | ||
| Storage temp. | -40~105? | -55?~125? | ||
Package Contents
- 2-CH UART TO ETH x1
1
| Shipping weight: | 0.01 Kg |
