The BIG 7-Seg R Click Board™ is what you need if you want to add a seven-segment LED display to your project. This click features an SC10-21SRWA seven-segment display. Communication between the MCU and the SC10-21SRWA display is established via serial-IN, parallel-OUT shift register 74HC595 IC.
The BIG 7-Seg R Click Board™ runs on either 3.3V or 5V power supply and communicates with the target MCU over an SPI interface.