HOW DOES IT WORK?

Silent Step 2 Click is based on the TMC2130, a high-performance two-phase stepper motor driver from Analog Devices. The highest resolution is 256 microsteps per full step. Some other integrated techniques are SpreadCycle™ as a highly dynamic motor control chopper, DcStep™ as load-dependent speed control, sTallGuard2™ as a high precision sensorless motor load detection, and more. The motor driver supports passive breaking and freewheeling mode. This motor driver also supports a few operating modes that can be used per your needs.

Silent Step 2 Click can communicate with the host MCU using a standard 4-wire SPI serial interface. It can also use the step/direction driver mode, which allows you to control the motor position by sending pulses on the step signal STP pin while indicating the direction on the direction signal DIR pin. The driver uses an external motor power supply of 4.75 up to 43V to power a 2-phase stepper motor up to 2A coil current (2.5A peak). The motor current can be set over the onboard VREF potentiometer.

Additional functionalities on this Click board™ are achieved over the PCA9538A, an 8-bit I/O port from NXP. This I/O port communicates with the host MCU over the I2C interface, and you can change the I2C address over the ADDR SEL jumpers. The PCA9538A allows you to control the driver enable function of the motor driver. It also monitors two driver motors' diagnostic outputs, and if a condition is met (say, stall of the motor), it will interrupt the host MCU over the INT pin. The I/O port can be reset over the RST pin.

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. 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