The Secure 2 Click Board™ carries the ATAES132A, a cryptographic coprocessor with secure hardware-based key storage from Microchip. The Click Board™ is designed to run on either 3.3V or 5V power supply. The Secure 2 Click Board™ communicates with the target microcontroller over SPI and I2C interface, with additional functionality provided by the INT pin on the mikroBUS line.