RS485 -UART 변환 모듈 -THVD1426
(RS485 8 CLICK)
개요
- 본 제품은 RS485 -UART 변환 모듈 -THVD1426입니다.
- RS485 트랜시버 THVD1426 칩을 기반으로 디자인된 제품입니다.
- UART 인터페이스를 통해 MCU와 연결하여 RS485 통신이 가능합니다.
특징
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HOW DOES IT WORK?
RS485 8 Click is based on the THVD1426, an RS485 transceiver with auto-direction control and ESD protection from Texas Instruments. The THVD1426 has one termination resistor over the A/B that can be enabled over the TERM jumper. The RS485 8 Click comes with the SM712, a 600W asymmetrical TVS diode array from Littelfuse, along with the termination resistor. This diode array is designed to protect the RS485 applications with asymmetrical working voltages from -7V up to 12V, thus making it safe from damage due to electrostatic discharge, fast electrical transients, and lightning-induced surges. Both the diode array and the termination resistor are placed near the RS485 screw terminal, with which you can connect the RS485 8 Click to your application's other end.
RS485 8 Click uses the UART interface to communicate with the host MCU with commonly used UART RX and TX pins. The auto-direction mode on the RS485 8 Click is set by default and disabled with a pull-down resistor. It can be enabled with the logic HIGH state on the EN pin of the mikroBUS™ socket. You can control the driver and receiver using the data input pin RX by enabling the transceiver.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type RS485 Applications Can be used for the development of industrial and multi-point applications over long cable runs On-board modules THVD1426 - an RS485 transceiver with auto-direction control and ESD protection from Texas Instruments Key Features Highly flexible, selectable power and logic voltage levels, half-duplex mode, optional 120Ω termination resistor jumper on bus pins, 600W asymmetrical diode array on bus pins, bus I/O protection, low power consumption, glitch-free power-up/power-down for hot plug-in capability, protection features, and more Interface UART Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V