80C51特殊功能寄存器地址表

80C51特殊功能寄存器地址表SFRMSB 位地址/位定义 LSB字节地址BF7F6F5F4F3F2F1F0F0HACCE7E6E5E4E3E2E1E0E0HPSWD7D6D5D4D3D2D1D0D0HCYACF0RS1RS0OVF1PIPBFBEBDBCBBBAB9B8B8HPSPT1PX1PT0PX0P3B7B6B5B4B3B2B1B0B0HP3.7P3.6P3.5P3.4P3.3P3.2P3.1P3.0IEAFAEADACABAAA9A8A8HEAESET1EX1ET0EX0P2A7A6A5A4A3A2A1A0A0HP2.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0SBUF(99H)SCON9F9E9D9C9B9A999898HSM0SM1SM2RENTB8RB8TIRIP1979695949392919090HP1.7P1.6P1.5P1.4P1.3P1.2P1.1P1.0TH1(8DH)TH0(8CH)TX1(8BH)TX0(8AH)TMODGATEC/TM1M0GATEC/TM1M0(89H)TCON8F8E8D8C8B8A898888HTF1TR1TF0TR0IE1IT1IE0IT0PCONSMODGF1GF0PDIDL（87H）DPH（83H） DPL（82H）SP（81H）P0878685848382818080HP0.7P0.6P0.5P0.4P0.3P0.2P0.1P0.0/*- 8051内核特殊功能寄存器 -*/sfr ACC = 0xE0; /累加器sfr B = 0xF0; /B 寄存器sfr PSW = 0xD0; /程序状态字寄存器sbit CY = PSW7; /进位标志位sbit AC = PSW6; /辅助进位标志位sbit F0 = PSW5; /用户标志位0sbit RS1 = PSW4; /工作寄存器组选择控制位sbit RS0 = PSW3; /工作寄存器组选择控制位sbit OV = PSW2; /溢出标志位sbit F1 = PSW1; /用户标志位1sbit P = PSW0; /奇偶标志位sfr SP = 0x81; /堆栈指针寄存器sfr DPL = 0x82; /数据指针0低字节sfr DPH = 0x83; /数据指针0高字节/*- 系统管理特殊功能寄存器 -*/sfr PCON = 0x87; /电源控制寄存器sfr AUXR = 0x8E; /辅助寄存器sfr AUXR1 = 0xA2; /辅助寄存器1sfr WAKE_CLKO = 0x8F; /时钟输出和唤醒控制寄存器sfr CLK_DIV = 0x97; /时钟分频控制寄存器sfr BUS_SPEED = 0xA1; /总线速度控制寄存器/*- 中断控制特殊功能寄存器 -*/sfr IE = 0xA8; /中断允许寄存器sbit EA = IE7; /总中断允许位 sbit ELVD = IE6; /低电压检测中断控制位sbit EADC = IE5; /ADC中断允许控制位sbit ES = IE4; /串口1中断允许位sbit ET1 = IE3; /定时器1溢出中断允许位sbit EX1 = IE2; /外部中断1允许位sbit ET0 = IE1; /定时器0溢出中断允许位sbit EX0 = IE0; /外部中断0允许位sfr IE2 = 0xAF; /中断允许寄存器2sfr IP = 0xB8; /中断优先级寄存器sbit PPCA = IP7; / PCA中断优先级控制位sbit PLVD = IP6; /低电压检测中断优先级控制位sbit PADC = IP5; /ADC中断优先级控制位sbit PS = IP4; /串口1中断优先级控制位sbit PT1 = IP3; /定时器1中断优先级控制位sbit PX1 = IP2; /外部中断1优先级控制位sbit PT0 = IP1; /定时器0中断优先级控制位sbit PX0 = IP0; /外部中断0优先级控制位sfr IPH = 0xB7; /中断优先级高位寄存器sfr IP2 = 0xB5; /第二中断优先级寄存器低字节sfr IPH2 = 0xB6; /第二中断优先级寄存器高字节/*- I/O 口特殊功能寄存器 -*/sfr P0 = 0x80; /P0口寄存器sfr P0M1 = 0x93; /P0口工作模式寄存器1sfr P0M0 = 0x94; /P0口工作模式寄存器0sfr P1 = 0x90; /P1口寄存器sfr P1M1 = 0x91; /P1口工作模式寄存器1sfr P1M0 = 0x92; /P1口工作模式寄存器0sfr P1ASF = 0x9D; /P1口模拟量功能设置寄存器sfr P2 = 0xA0; /P2口寄存器sfr P2M1 = 0x95; /P2口工作模式寄存器1sfr P2M0 = 0x96; /P2口工作模式寄存器0sfr P3 = 0xB0; /P3口寄存器sbit T1 = P35; /定时器1外部输入sbit T0 = P34; /定时器0外部输入sbit INT1 = P33; /外部中断1sbit INT0 = P32; /外部中断0sbit TXD = P31; /串行输入通道sbit RXD = P30; /串行输出通道sfr P3M1 = 0xB1; /P3口工作模式寄存器1sfr P3M0 = 0xB2; /P3口工作模式寄存器0sfr P4 = 0xC0; /P4口寄存器sfr P4M1 = 0xB3; /P4口工作模式寄存器1sfr P4M0 = 0xB4; /P4口工作模式寄存器0sfr P4SW = 0xBB; /P4口功能切换寄存器sfr P5 = 0xC8; /P5口（只有P5.3 P5.2 P5.1 P5.0）sfr P5M1 = 0xC9; /P5口工作模式寄存器1sfr P5M0 = 0xCA; /P5口工作模式寄存器0./*- 定时器特殊功能寄存器 -*/sfr TCON = 0x88;/定时/计数控制寄存器sbit TF1 = TCON7;/定时器1溢出中断标志sbit TR1 = TCON6;/定时器1运行控制位sbit TF0 = TCON5;/定时器0溢出中断标志sbit TR0 = TCON4;/定时器0运行控制位sbit IE1 = TCON3;/外部中断1请求标志sbit IT1 = TCON2;/选择外部中断请求1为边沿触发方式的控制位sbit IE0 = TCON1; /外部中断0请求标志sbit IT0 = TCON0; /选择外部中断请求0为边沿触发方式的控制位sfr TMOD = 0x89; /定时/计数模式控制寄存器sfr TL0 = 0x8A; /定时/计数器0低字节sfr TH0 = 0x8C; /定时/计数器0高字节sfr TL1 = 0x8B; /定时/计数器1低字节sfr TH1 = 0x8D; /定时/计数器1高字节/*- 串行口特殊功能寄存器 -*/sfr SCON = 0x98; /串行口控制寄存器sbit SM0 = SCON7; /串行口工作方式设定控制位0（与FE功能复用）sbit FE = SCON7;sbit SM1 = SCON6; /串行口工作方式设定控制位1sbit SM2 = SCON5; /UART的SM2设定sbit REN = SCON4; /接收允许位sbit TB8 = SCON3; /发送数据的第九位sbit RB8 = SCON2; /接收数据的第九位sbit TI = SCON1; /发送中断标志sbit RI = SCON0; /接收中断标志sfr SBUF = 0x99; /串口数据缓冲器sfr SADEN = 0xB9; /从机地址掩码寄存器sfr SADDR = 0xA9; /从机地址寄存器sfr S2CON = 0x9A; /串行口2控制寄存器sfr S2BUF = 0x9B; /串行口2数据缓冲器sfr BRT = 0x9C; /独立波特率定时器/*- 看门狗定时器寄存器 -*/sfr WDT_CONTR = 0xC1; /看门狗定时器控制寄存器/*- PCA 寄存器 -*/sfr CCON = 0xD8; /PCA控制寄存器sbit CF = CCON7; /PCA计数器溢出(CH,CL由FFFFH变为0000H)标志sbit CR = CCON6; /PCA计数器计数允许控制位sbit CCF1 = CCON1; /PCA模块1中断标志sbit CCF0 = CCON0; /PCA模块0中断标志sfr CMOD = 0xD9; /PCA工作模式寄存器sfr CL = 0xE9; /PCA计数器低8位sfr CH = 0xF9; /PCA计数器高8位sfr CCAPM0 = 0xDA; /PAC模块0的工作模式寄存器sfr CCAPM1 = 0xDB; /PAC模块1的工作模式寄存器sfr CCAP0L = 0xEA; /PAC模块0捕捉/比较寄存器低8位sfr CCAP0H = 0xFA; /PAC模块0捕捉/比较寄存器高8位sfr CCAP1L = 0xEB; /PAC模块1捕捉/比较寄存器低8位sfr CCAP1H = 0xFB; /PAC模块1捕捉/比较寄存器高8位sfr PCA_PWM0 = 0xF2; /PCA模块0 PWM寄存器sfr PCA_PWM1 = 0xF3; /PCA模块1 PWM寄存器/*- ADC 寄存器 -*/sfr ADC_CONTR = 0xBC; /ADC控制寄存器, 本寄存器不支持位操作sfr ADC_RES = 0xBD; /ADC转换结果高8位寄存器sfr ADC_RESL = 0xBE; /ADC转换结果低2位寄存器/*- SPI 寄存器 -*/sfr SPSTAT = 0xCD; /SPI状态寄存器,本寄存器不支持位操作sfr SPCTL = 0xCE; /SPI控制寄存器sfr SPDAT = 0xCF; /SPI数据寄存器/*- ISP_IAP_EEPROM 寄存器 -*/sfr IAP_DATA