There are smaller microcontrollers than the ATtiny13. Some ARM chips will fit on the head of a large pin, and even in Atmel world, the ATtiny10 comes in a tiny SOT-23-6 package – a size normally ...
uint32_t Mode; /*!< Specifies the SPI operating mode. This parameter can be a value of @ref SPI_Mode */ uint32_t Direction; /*!< Specifies the SPI bidirectional mode state. This parameter can be a ...