DC Motor 20 Click Board™

Product Code: MIKROE-4884

How Does The DC Motor 20 Click Board™ Work? The DC Motor 20 Click Board™ is based on the TC78H651AFNG, a dual H-bridge driver for one or two DC brushed motors from Toshiba Semiconductor. The integrated MOSFETs, which configures with an H-Bridge circuit inside the TC78H651AFNG, use DMOS elements with low-on resistance (0.22Ω typical with 5V power supply). It has a wide operating voltage range with an output current capacity of 2A maximum and control functions including motor-related functions and built-in detection circuits for overcurrent, overheat, and low/high voltage. As mentioned in the product description, the DC Motor 20 Click Board™ communicates with MCU using several GPIO pins. Also, this Click board™ has a Standby function used to switch to Standby mode by setting all motor control pins to a low logic state. When the Standby mode is active, the TC78H651AFNG 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 TC78H651AFNG, 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/Stop rotation direction mode can be selected according to the state of its input control signals. More information on the Motor Rotation Mode Selection can be found in the attached datasheet. The DC Motor 20 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 Type Brushed Applications Can be used for driving DC brushed motors and stepping motors for low voltage equipment On-board modules TC78H651AFNG - dual H-bridge driver for one or two DC brushed motors from Toshiba Semiconductor Key Features Low power consumption, dual bridge driver, high drive capability, low voltage drive, low-on resistance, selectable motor operation, built-in Standby and protection features, and more Interface GPIO Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V,External PINOUT DIAGRAM This table shows how the pinout on the DC Motor 20 Click Board™ 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 NC 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 Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL Left Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V JP2 VM SEL Left TC78H651AFNG Power Supply Selection VEXT/VCC: Left position VEXT, Right position VCC DC MOTOR 20 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage VCC