"AT89S51单片机原理与基本应用系统详解"

单片机原理与基本应用系统.pptx是一个关于AT89S51单片机原理与基本应用系统的教程文件，内容包括单片机的内部结构与引脚功能、存储器空间配置与功能、汇编语言指令格式与内部RAM的操作、I/O输入输出端口结构及工作原理等。AT89S51单片机内部结构包括一个8位的CPU、一个片内振荡器及时钟电路、4KB的Flash ROM、128B的内部RAM、可扩展64KB外部ROM和外部RAM的控制电路、两个十六位的定时/计数器、26个特殊功能寄存器、4个8位的并行口、一个全双工的串行口、5个中断源，两个外部中断，三个内部中断、内部硬件看门狗电路、一个SPI串行接口等。该教程文件还详细介绍了单片机的基本应用系统，包括芯片电源接口等。 Overall, the "Single Chip Microcomputer Principle and Basic Application System.pptx" is a tutorial file about the principle and basic application system of AT89S51 single chip microcomputer, the content includes the internal structure and pin function, memory space allocation and function, assembly language instruction format and internal RAM operation, I/O input and output port structure and working principle, etc. The internal structure of AT89S51 single chip microcomputer includes an 8-bit CPU, an on-chip oscillator and clock circuit, 4KB Flash ROM, 128B internal RAM, expandable 64KB external ROM and external RAM control circuit, two 16-bit timer/counters, 26 special function registers, 4 8-bit parallel ports, a full-duplex serial port, 5 interrupt sources, two external interrupts, three internal interrupts, internal hardware watchdog circuit, an SPI serial interface, etc. The tutorial file also detailed the basic application system of the single chip microcomputer, including the chip power supply interface.