2021年单片机复习知识点.pdf

学习资料收集于网络，仅供参考学习资料单片机原理及应用考试复习知识点第 1 章 计算机基础知识考试知识点：1、各种进制之间的转换（1）各种进制转换为十进制数方法：各位按权展开相加即可。（2）十进制数转换为各种进制方法：整数部分采用“除基取余法”，小数部分采用“乘基取整法”。（3）二进制数与十六进制数之间的相互转换方法：每四位二进制转换为一位十六进制数。2、带符号数的三种表示方法（1）原码：机器数的原始表示，最高位为符号位（0+1-），其余各位为数值位。（2）反码：正数的反码与原码相同。负数的反码把原码的最高位不变，其余各位求反。（3）补码：正数的补码与原码相同。负数的补码为反码加1。原码、反码的表示范围：-127+127，补码的表示范围：-128+127。3、计算机中使用的编码（1）BCD 码：每 4 位二进制数对应1 位十进制数。（2）ASCII 码：7 位二进制数表示字符。09 的 ASCII 码 30H 39H，A 的|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 1 页，共 10 页学习资料收集于网络，仅供参考学习资料ASCII 码 41H，a 的 ASCII 码 61H。第 2 章 Mcs-51 单片机的硬件结构考试知识点：1、Mcs-51 单片机的内部逻辑结构单片机是把CPU、存储器、输入输出接口、定时/计数器和时钟电路集成到一块芯片上的微型计算机，主要由以下几个部分组成。（1）中央处理器CPU 包括运算器和控制器。运算电路以ALU 为核心，完成算术运算和逻辑运算，运算结果存放于ACC中，运算结果的特征存放于PSW 中。控制电路是单片机的指挥控制部件，保证单片机各部分能自动而协调地工作。程序计数器PC 是一个 16 位寄存器，PC 的内容为将要执行的下一条指令地址，具有自动加1 功能，以实现程序的顺序执行。（2）存储器分类：随机存取存储器RAM：能读能写，信息在关机后消失。可分为静态RAM（SRAM）和动态 RAM（DRAM）两种。只读存储器：信息在关机后不会消失。掩膜 ROM：信息在出厂时由厂家一次性写入。可编程 PROM：信息由用户一次性写入。r 可擦除可编程EPROM：写入后的内容可由紫外线照射擦除。电可擦除可编程EEPROM：可用电信号进行清除和改写。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 2 页，共 10 页文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8学习资料收集于网络，仅供参考学习资料存储容量：存储容量指存储器可以容纳的二进制信息量，M 位地址总线、N 位数据总线的存储器容量为2M N 位。Mcs-51 单片机的存储器有内部RAM（128B，高 128B 为专用寄存器）、外部 RAM（64KB）、内部 ROM（4KB 掩膜 ROM）、外部 ROM（64KB）。（3）输入输出接口4 个 8 位并行 I/O 口（P0、P1、P2、P3）（4）其它资源一个全双工串行口、5 个中断源、2 个 16 位的定时/计数器、时钟电路。2、Mcs-51 单片机的信号引脚（1）电源部分：VCC 接+5V、VSS 接地。（2）时钟电路部分：XTAL1 和 XTAL2 接晶振。1 个机器周期=6 个状态=12 个拍节6MHZ 的晶体机器周期2us，12MHZ 的晶体机器周期1us。（3）I/O 口部分：P0 8 位数据总线/地址总线低8 位、P1用户口、P2 地址高 8 位、P3 第二功能。（4）控制部分：地址锁存控制信号ALE，用于控制把P0 口输出的低8 位地址送入锁存器锁存地起来。外部程序存储器读选通信号PSEN，低电平有效，以实现外部ROM 单元的读操作。访问程序存储器控制信号EA，低电平时只读外部ROM，高电平时先读内部|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 3 页，共 10 页文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8学习资料收集于网络，仅供参考学习资料ROM，再读外部ROM。复位信号 RST，当输入的复位信号延续2 个机器周期以上高电平时即为有效。复位值：PC=0000H，SP=07H，P0=0FFH。3、内部 RAM 的基本结构与功能Mcs-51 的内部数据存储器低128 单元区，称为内部 RAM，地址为 007FH。（1）寄存器区（001FH）共分为 4 组，组号依次为0、1、2、3，每组有 8 个寄存器，在组中按 R7R0编号。由 PSW 中 RS1、RS0 位的状态组合来决定哪一组。（2）位寻址区（20H 2FH）可对单元中的每一位进行位操作，16 个字节单元共128 个可寻址位，位地址为 007FH。位起始地址D0=（字节地址-20H）*8（3）用户 RAM 区（30H7FH）堆栈、缓冲区堆栈是在内部RAM 中开辟的，最大特点就是“后进先出”的数据操作原则。两项功能：保护断点和保护现场。两种操作：进栈和出栈。SP 堆栈指针，它的内容就是堆栈栈顶单元的地址。4、专用寄存器（内部数据存储器高128 单元）（1）累加器 A（ACC）（2）寄存器 B（3）程序状态字PSW CY 进位标志位，最高位的进位或借位。AC 半进位标志位，低4 位向高 4 位的进位或借位。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 4 页，共 10 页文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8学习资料收集于网络，仅供参考学习资料OV 溢出标志位，同符号数相加，结果为异符号，有溢出；异符号数相减，结果和减数符号相同，有溢出。P A 中 1 的个数，奇数个P=1，偶数个 P=0。（4）数据指针DPTR：Mcs-51 中惟一一个供用户使用的16 位寄存器。高8位 DPH，低 8 位 DPL。第 3 章 Mcs-51 单片机指令系统考试知识点：1、寻址方式（1）立即寻址（#data，#data16）例：MOV A，#00H（2）直接寻址（direct）内部 RAM：007FH、特殊功能寄存器例：MOV A，00H（3）寄存器寻址（A、B、Rn、DPTR）（4）寄存器间接寻址（Ri、DPTR）例：MOVX A，DPTR（5）变址寻址（A+DPTR，A+PC）例：MOVC A，A+DPTR（6）位寻址（bit）202FH：007FH、特殊功能寄存器例：MOV C，00H（7）相对寻址（rel）例：JZ rel 2、数据传送类指令（1）内部 RAM 数据传送指令MOV 目的，源；目的源交换指令：XCH A，direct/Rn/Ri；A 和源交换XCHD A，Ri；只换低 4 位|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 5 页，共 10 页文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8学习资料收集于网络，仅供参考学习资料SWAP A；A 的高低 4 位交换注意：A 作目的操作数会影响P。PUSH direct POP direct（2）外部 RAM 数据传送指令MOVX A，Ri/DPTR；外部地址内容AMOVXRi/DPTR，A；A 外部地址内容（3）ROM 数据传送指令MOVC A，A+DPTR/A+PC；查表指令3、算术运算指令（1）加法指令ADD/ADDC A，#data/direct/Rn/Ri；会影响 CY、AC、OV、P INC A/direct/Rn/Ri/DPTR；加 1，P DA A；十进制调整，大于9 加 6（2）减法指令SUBB A，#data/direct/Rn/Ri；会影响 CY、AC、OV、P DEC A/direct/Rn/Ri；减 1（3）乘除指令MUL AB；(A)*(B)BA，会影响 CY=0，OV，P DIV AB；(A)/(B)的商 A，余数 B4、逻辑运算及移动指令（1）逻辑运算指令ANL/ORL/XRL A，#data/direct/Rn/Ri|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 6 页，共 10 页文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8学习资料收集于网络，仅供参考学习资料ANL/ORL/XRL direct，A/#data 与清 0，或 置 1，异或 取反CLR/CPL A；清 0 和取反（2）移位指令RL/RR/RLC/RRC A 注意：每左移一位相当于乘2，每右移一位相当于除2，带进位的移会影响CY 和 P。5、控制转移类指令（1）无条件转移指令LJMP addr16；addr16 PC，64KB AJMP addr11；(PC)+2PC，addr11 PC10 0，2KB SJMP rel；(PC)+2+rel PC，256B JMP A+DPTR；(A)+(DPTR)PC，64KB（2）条件转移指令累加器 A 判 0 转移指令JZ rel；A 为 0 JNZ rel；A 不为 0 比较不相等转移指令CJNE A/Rn/Ri，#data，rel CJNE A，direct，rel 注意：第一操作数和第二操作数不相等，程序转移，若第一大于第二，CY=0，第一小于第二，CY=1。第一操作数和第二操作数相等，程序顺序执行，CY=0。|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 7 页，共 10 页文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 ZV4P2U4D7J8文档编码:CY3R3C3M4I3 HA2B7X5H6W6 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