CAN Isolator Click

How does it work?

CAN Isolator Click is based on the ADM3053, a signal and power-isolated CAN transceiver with an integrated isolated DC-to-DC converter from Analog Devices. The transceiver features thermal shutdown protection, high common-mode transient immunity, up to 2500Vrms for 1-minute protection, and when not powered, it does not disturb the bus. ICoupler® technology combines 2-channel isolation, a CAN transceiver, and an isoPower® DC-to-DC converter into a single chip. The power isolation is implemented using a DC-to-DC converter, while the signal isolation is implemented on the logic side of the interface.

CAN Isolator Click allows two different modes of operation to be selected over the SLOPE SEL jumper. You can set the high-speed or slope control where high-speed (HI) is set by default. This allows CAN Isolator Click to be used with a shielded cable to avoid electromagnetic interference (EMI) problems. Slope control mode allows using an unshielded twisted pair or a parallel pair of wires as bus lines.

CAN Isolator Click uses a standard 2-Wire UART interface to communicate with the host MCU, with commonly used UART RX and TX pins.

This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VIO 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

Pinout diagram

This table shows how the pinout on CAN Isolator Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
	NC	2	RST	INT	15	NC
	NC	3	CS	RX	14	TX	UART TX
	NC	4	SCK	TX	13	RX	UART RX
	NC	5	MISO	SCL	12	NC
	NC	6	MOSI	SDA	11	NC
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

CAN Isolator Click electrical specifications

Software Support

We provide a library for the CAN Isolator Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for CAN Isolator Click driver.

Key functions

• Generic multi write function.

• Generic multi read function.

• Generic single read function.

• Generic single write function.

Example Description

This is a example which demonstrates the use of Can Isolator Click board.

 void application_task ( void ) 
 { 
     canisolator_data_t tmp; 

     //  Task implementation. 

 #ifdef DEMO_APP_RECEIVER 

     // RECEIVER - UART polling 

     tmp =  canisolator_generic_single_read( &canisolator ); 
     log_printf( &logger, " %c ", tmp ); 

 #endif 
 #ifdef DEMO_APP_TRANSMITER 

     // TRANSMITER - TX each 2 sec 

     uint8_t cnt; 

     for ( cnt = 0; cnt < 9; cnt ++ ) 
     { 
         canisolator_generic_single_write( &canisolator, demo_message[ cnt ] ); 
         Delay_ms ( 100 ); 
     } 

     Delay_ms ( 1000 );
     Delay_ms ( 1000 ); 

 #endif 

 }

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.CanIsolator

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MIKROE compilers.

mikroSDK

This Click board™ is supported with mikroSDK – MIKROE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.