CAN/CAN FD 통신 절연 모듈 -ISO1042
(CAN ISOLATOR 2 CLICK)
개요
- 본 제품은 CAN/CAN FD 통신 절연 모듈 -ISO1042입니다.
- 절연된 CAN 트랜시버 ISO1042 를 탑재한 제품으로 ISO11898-2 스펙을 만족시키며, +/-70V DC 까지 CAN 버스상의 전압으로부터 회로를 보호합니다. (통상 동작전압 +/-30V)
- 두개의 CAN 모드 (CAN 및 CAN FD)를 지원합니다.
특징
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HOW DOES IT WORK?
CAN Isolator 2 Click is based on the ISO1042, an isolated CAN transceiver from Texas Instruments. It has several features, such as undervoltage protection, driver Dominant Time Out (TXD DTO), HBM ESD tolerance on bus pins, and more. The transceiver has ideal passive high-impedance bus terminals when unpowered. If used in conjunction with the isolated power supplies, the CAN Isolator 2 Click can be the ideal choice for protection against high voltages and noise currents from the bus.
There are two states of operation on this Click board™: dominant and recessive. In a dominant state, the bus is driven differentially by a driver. In a recessive state, the host MCU of the CAN node uses the TXD pin to drive the bus and receives the data from the bus on the RXD pin. To connect ISO1042 on a CAN bus, this Click board™ features a standard DB 9-pin male connector. According to the ISO 11898-2 standard, a maximum bus length is 40m, and a maximum stub length is 0.3m, while with careful design, the cables could be longer. This transceiver has a high input impedance, thus allowing a large number of nodes on the CAN bus.
CAN Isolator 2 Click uses a standard UART interface to communicate with the host MCU, with commonly used UART RX and TX. In addition, there are few headers to interface lines directly with jumper wires. The left side of the CAN Isolator 2 Click has VEXT 2-pin header to connect the external power supply. Along with the VEXT, on the opposite side, there are CANH and CANL pins to interface the CAN bus in the same manner. Under the CAN header, there is also one TX and RX header which allows this Click board™ to be used independently of the host MCU.
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 CAN,Isolators Applications Can be used for the development of solar inverters, AC and servo drives, industrial field networks, PLC and DCS communication modules, battery charging and management, and more On-board modules ISO1042 - isolated CAN transceiver from Texas Instruments Key Features The fully isolated interface between the CAN protocol controller and the physical layer bus, capable of running at data rates of up to 5Mbps, robust electromagnetic compatibility, ideal passive high impedance bus terminal when unpowered, long bus cable length, dominant and recessive states during operation, and more Interface UART ClickID No Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V,External