Introduction - If you have any usage issues, please Google them yourself
MCU hardware design principles of a system based application system hardware circuit design includes two parts : First, the expansion of internal microcontroller that is the function modules, such as ROM, RAM, I/O, timer/counter, interrupt system can not meet the application requirements, must chip in for expansion, the selection of appropriate chips, The circuit design accordingly. Second, the system configuration, according to the functional requirements of system configuration peripheral equipment, such as keyboards, monitors, printers, A/D, D/A converters, it is necessary to design appropriate interface circuit.