DC Motor 19 Click

How does it work?

DC Motor 19 Click as its foundation uses the TC78H653FTG, a dual H-bridge driver for one or two DC brushed motors or one stepping motor from Toshiba Semiconductor. The integrated MOSFETs, which configures with an H-Bridge circuit inside the TC78H653FTG, use DMOS elements with low-on resistance (0.11Ω typical with 5V power supply and activated Large mode). It has a wide operating voltage range with an output current capacity of 4A (DC) and control functions, including motor-related functions (Forward, Reverse, Brake, Stop), current control, and built-in detection circuits for overcurrent, overheat, and low/high voltage.

As mentioned in the product description, DC Motor 19 Click communicates with MCU using several GPIO pins. Also, this Click board™ has a Standby pin labeled as SBY routed to the CS pin of the mikroBUS™ socket used to switch to Standby mode by toggling the pin. When the SBY pin is low, TC78H653FTG stops supplying the power to the logic circuit, the Standby current is significantly reduced because all circuits in the IC are configured with CMOS/DMOS elements, and the current consumption in this mode is 0μA typical.

To turn ON the internal MOSFETs of the TC78H653FTG, they need to be switched by the logic level, which is input to the control input pins: IN1, IN2, IN3, and IN4 pins routed to the RST, AN, PWM, and INT pins of the mikroBUS™ socket. Thereby, the Forward/Reverse/Brake/Stop rotation direction mode can be selected according to the state of its input control signals, while the motor operation and current mode can be chosen through onboard switches labeled as MODE and LARGE, alongside control signals. With active LARGE mode, IN1 and IN2 pins control this mode while motor control pins A+ and A- are connected as OUT+ pin and pins B- and B+ pin are connected as OUT- pin. More information on the Motor Mode Selection can be found in the attached datasheet.

The DC Motor 19 supports an external power supply for the TC78H653FTG, which can be connected to the input terminal labeled as VM and should be within the range of 1.8V to 7.5V, while the DC motor coils can be connected to the terminals labeled as B+, B-, A-, and A+.

This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use 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 DC Motor 19 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Motor Control Input 1	IN1	1	AN	PWM	16	IN3	Motor Control Input 3
Motor Control Input 2	IN2	2	RST	INT	15	IN4	Motor Control Input 4
Standby Mode	SBY	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

DC Motor 19 Click electrical specifications

Software Support

We provide a library for the DC Motor 19 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

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

Library Description

This library contains API for DC Motor 19 Click driver.

Example key functions

• dcmotor19_drive_motor This function drives the motor for a certian time specified by time_ms at the desired speed. The motor channel and mode must be previously selected using the dcmotor19_set_channel_mode function.

• dcmotor19_set_channel_mode This function sets the active channel and mode which will be used by the dcmotor19_drive_motor function.

• dcmotor19_disable_standby_mode This function disables the standby mode.

Example Description

This example demonstrates the use of DC Motor 19 Click board™ by driving the motors in both direction in the span of 14 seconds.

 void application_task ( void ) 
 { 
     log_printf ( &logger, " Driving motors forward...rn" ); 
     dcmotor19_set_channel_mode ( &dcmotor19, DCMOTOR19_CHANNEL_1 | DCMOTOR19_CHANNEL_2, DCMOTOR19_MODE_FORWARD ); 
     dcmotor19_drive_motor ( &dcmotor19, DCMOTOR19_SPEED_DEFAULT, 5000 ); 
     log_printf ( &logger, " Pull brake!rn" ); 
     dcmotor19_set_channel_mode ( &dcmotor19, DCMOTOR19_CHANNEL_1 | DCMOTOR19_CHANNEL_2, DCMOTOR19_MODE_SHORT_BRAKE ); 
     Delay_ms( 2000 ); 
     log_printf ( &logger, " Driving motors in reverse...rn" ); 
     dcmotor19_set_channel_mode ( &dcmotor19, DCMOTOR19_CHANNEL_1 | DCMOTOR19_CHANNEL_2, DCMOTOR19_MODE_REVERSE ); 
     dcmotor19_drive_motor ( &dcmotor19, DCMOTOR19_SPEED_DEFAULT, 5000 ); 
     log_printf ( &logger, " Stop driving!rnn" ); 
     dcmotor19_set_channel_mode ( &dcmotor19, DCMOTOR19_CHANNEL_1 | DCMOTOR19_CHANNEL_2, DCMOTOR19_MODE_STOP ); 
     Delay_ms( 2000 ); 
 } 

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

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.DCMotor19

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 MikroElektronika compilers.

mikroSDK

This Click board™ is supported with mikroSDK – MikroElektronika 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.