This course presents brief overview about Serial Peripheral Interface and describes about Kinetis KL25 SPI Module Register set and initialization sequence. Then it describes about the MAX7219, 8 digit LED display interface. Then practical hardware and software implementation of interfacing details along with demo program. It describes about the hardware pin interfacing of Kinetis KL25 like PTD0 ( SS ), PTD1 ( SCK ), PTD2 ( MOSI ) and PTD3 ( MISO ).