Hall Current 19 Click

How does it work?

Hall Current 19 Click is based on the CZ3AG2, a coreless current sensor from AKM Semiconductor. This sensor uses Hall sensor technology to provide an analog voltage output proportional to the AC/DC current on the AN pin of the mikroBUS™ socket. Using a Group III-V semiconductor thin film as the Hall element, the CZ3AG2 ensures high-accuracy and high-speed current sensing. It also includes functions for reducing stray magnetic fields and dual overcurrent detection. Being UL 61800-5-1 safety compliant, the CZ3AG2-based Hall Current 19 Click is perfect for industrial AC drives, servo motors, UPS systems, general inverters, and power conditioners.

As mentioned, this Click board™ is equipped with dual overcurrent detection capabilities on the OC1 and OC2 pins of the mikroBUS™ socket. Using voltage dividers R6/R9 and R7/R10, it sets precise current limits ranging from 7A to 17.5A. This ensures that any current value falling outside this specified range will be promptly detected by the overcurrent detectors, providing reliable protection and accurate measurement.

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. Also, this 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 Hall Current 19 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Analog Output	AN	1	AN	PWM	16	OC2	Overcurrent Detection 2
	NC	2	RST	INT	15	OC1	Overcurrent Detection 1
ID COMM	CS	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	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

Hall Current 19 Click electrical specifications

Software Support

We provide a library for the Hall Current 19 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 Hall Current 19 Click driver.

Key functions

• hallcurrent19_get_oc2 This function is used to get state of the overcurrent 2 detection of the Hall Current 19 Click board.

• hallcurrent19_set_zero_ref This function sets the zero voltage reference of the Hall Current 19 Click board.

• hallcurrent19_get_current This function reads and calculate input current value of the Hall Current 19 Click board.

Example Description

This example demonstrates the use of Hall Current 19 Click board™ by reading and displaying the current measurements.

 void application_task ( void )  
 { 
     float voltage = 0; 
     if ( HALLCURRENT19_OK == hallcurrent19_get_current ( &hallcurrent19, &voltage ) )  
     { 
         log_printf( &logger, " Current : %.3f[A]rnn", voltage ); 
         Delay_ms( 1000 ); 
     } 
     if ( HALLCURRENT19_OCD_ACTIVE == hallcurrent19_get_oc1( &hallcurrent19 ) ) 
     { 
         log_printf( &logger, " Current over 7A rn" ); 
     } 
     if ( HALLCURRENT19_OCD_ACTIVE == hallcurrent19_get_oc2( &hallcurrent19 ) ) 
     { 
         log_printf( &logger, " Current over 17.5A rn" ); 
     } 
 }

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.HallCurrent19

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.