Mikroe MCU Card 11 for STM32 STM32F302VC is an add-on board for simply installing and replacing an MCU on a development board equipped with an MCU Card socket. This Mikroe new MCU Card standard ensures compatibility between the development board and any supported MCU, regardless of PIN and compatibility. MCU Cards have two 168-pin mezzanine connectors to help MCUs with a high pin count. This design allows for simple usage, following the Click board™ plug and play concept.