MICRO-CONTROLLER UNIT FOR VEHICLE, AND SYSTEM AND METHOD FOR SERIAL PERIPHERAL INTERFACE COMMUNICATION BETWEEN MICRO-CONTROLLER UNITS

摘要

The present invention is intended to overcome a problem in which data is not identical to data of a master micro-controller unit (MCU) especially when serial peripheral interface (SPI) communication is performed after a slave MCU has been reset, and also intended to implement robust communication by enabling the SPI communication between the master MCU and the slave MCU to be constantly and normally performed after the reset. According to an embodiment of the present invention, an MCU for a vehicle, which is an MCU for a vehicle connected to an SPI communication interface, comprises a slave MCU which includes a Signal ClocK (SCK) port for a clock, a master out slave in (MOSI) port and master in slave out (MISO) port for input and output of data, and a slave selection (SS) port and slave ready port for slave MCU selection. In this case, the slave ready port is a port adapted to notify a slave SPI communication configuration completion state to a master MCU.;COPYRIGHT KIPO 2017