The MikroElektronika EXPAND 7 Click is a compact add-on board that contains a multi-port I/O expander with bidirectional input/outputs or PWM outputs. This board features the CY8C9540A, 40-bit I/O port expander with EEPROM and 8 independently configurable 8-bit PWM outputs from Infineon. Type Port expander
Interface I2C