SPECIAL FUNCTION REGISTER ??Register (MSB) (LSB) ByteSymbol b7 b6 b5 b4 b3 b2 b1 b0 AddressP0 P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 80H(128)SP 81H(129)DPL 82H(130)DPH 83H(131)PCON SMOD - - - GF1 GF0 PD IDL 87H(135)*PCON SMOD - - WLE GF1 GF0 PD IDL 87H(135)TCON TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 88H(136)TMOD GATE C/T M1 M0 GATE C/T M1 M0 89H(137)TL0 8AH(138)TL1 8BH(139)TH0 8CH(140)TH1 8DH(141)P1 P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 T2EX T2 90H(144)*P1 SDA SCL RT2 T2 CT3I CT2I CT1I CT0I 90H(144)SCON SM0 SM1 SM2 REN TB8 RB8 TI RI 98H(152)SBUF 99H(153)P2 P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 0A0H(208)IE EA - ET2 ES ET1 EX1 ET0 EX0 0A8H(168)*IEN0 EA EAD ES1 ES0 ET1 EX1 ET0 EX0 0A8H(168)+CML0 0A9H(169)+CML1 0AAH(170)+CML2 0ABH(171)+CTL0 0ACH(172)+CTL1 0ADH(173)+CTL2 0AEH(174)+CTL3 0AFH(175)P3 RD WR T1 T0 INT1 INT0 TXD RXD 0B0H(176)IP - - PT2 PS PT1 PX1 PT0 PX0 0B8H(184)*IP0 - PAD PS1 PS0 PT1 PX1 PT0 PX0 0B8H(184)+P4 CMT1 CMT0 CMSR5 CMSR4 CMSR3 CMSR2 CMSR1 CMSR0 0C0H(192)+P5 ADC7 ADC6 ADC5 ADC4 ADC3 ADC2 ADC1 ADC0 0C4H(196)+ADCON ADC.1 ADC.0 ADEX ADCI ADCS AADR2 AADR1 AADR0 0C5H(197)+ADCH 0C6H(198)T2CON TF2 EXF2 RCLK TCLK EXEN2 TR2 C/T2 CP/RL2 0C8H(200)*TM2IR T2OV CMI2 CMI1 CMI0 CTI3 CTI2 CTI1 CTI0 0C8H(200)+CMH0 0C9H(201)RCAP2L 0CAH(202)*CMH1 0CAH(202)RCAP2H 0CBH(203)*CMH2 0CBH(203)TL2 0CCH(204)*CTH0 0CCH(204)TH2 0CDH(205)*CTH1 0CDH(205)+CTH2 0CEH(206)+CTH3 0CFH(207)PSW CY AC F0 RS1 RS0 OV F1 P 0D0H(208)+S1CON ENS1 STA STO SI AA CR1 CR0 0D8H(216)+S1STA SC4 SC3 SC2 SC1 SC0 0 0 0 0D9H(217)+S1DAT 0DAH(218)+S1ADR SLAVE ADDRESSGC 0DBH(219)ACC ACC.7 ACC.6 ACC.5 ACC.4 ACC.3 ACC.2 ACC.1 ACC.0 0E0H(224)+IEN1 ET2 ECM2 ECM1 ECM0 ECT3 ECT2 ECT1 ECT0 0E8H(232)+TM2CON T2IS1 T2IS0 T2ER T2B0 T2P1 T2P0 T2MS1 T2MS0 0EAH(234) +CTCON CTN3 CTP3 CTN2 CTP2 CTN1 CTP1 CTN0 CTP0 0EBH(235) +TML2 0ECH(236)+TMH2 0EDH(237)+STE TG47 TG46 SP45 SP44 SP43 SP42 SP41 SP40 0EEH(238)+RTE TP47 TP46 RP45 RP44 RP43 RP42 RP41 RP40 0EFH(239)B B.7 B.6 B.5 B.4 B.3 B.2 B.1 B.0 0F0H(240)+IP1 PT2 PCM2 PCM1 PCM0 PCT3 PCT2 PCT1 PCT0 0F8H(248)+PWM0 0FCH(252)+PWM1 0FDH(253)+PWMP 0FEH(254)+T3 0FFH(255)Notes: 1. * denotes the difference between 80C552 and 80512. + denotes the addition of 80C552/*--------------------------------------------------------------------------W77C32.H - preliminary releaseHeader file for Winbond microcontroller W77C32Based on the Preliminary Release form March 1999Copyright (c) 1988-1999 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved.--------------------------------------------------------------------------*//* BYTE Registers */sfr P0 = 0x80;sfr P1 = 0x90;sfr P2 = 0xA0;sfr P3 = 0xB0;sfr P4 = 0xA5;sfr PSW = 0xD0;sfr ACC = 0xE0;sfr B = 0xF0;sfr SP = 0x81;sfr DPL = 0x82;sfr DPH = 0x83;sfr PCON = 0x87;sfr TCON = 0x88;sfr TMOD = 0x89;sfr TL0 = 0x8A;sfr TL1 = 0x8B;sfr TH0 = 0x8C;sfr TH1 = 0x8D;sfr IE = 0xA8;sfr IP = 0xB8;sfr SCON = 0x98;sfr SBUF = 0x99;sfr T2CON = 0xC8;sfr T2MOD = 0xC9;sfr RCAP2L = 0xCA;sfr RCAP2H = 0xCB;sfr TL2 = 0xCC;sfr TH2 = 0xCD;/* W77C32 extensions */sfr DPS = 0x86;sfr CKCON = 0x8E;sfr EXIF = 0x91;sfr SADDR = 0xA9;sfr SADDR1 = 0xAA;sfr SADEN = 0xB9;sfr SADEN1 = 0xBA;sfr SCON1 = 0xC0;sfr SBUF1 = 0xC1;sfr ROMMAP = 0xC2;sfr PMR = 0xC4;sfr STATUS = 0xC5;sfr TA = 0xC7;sfr WDCON = 0xD8;sfr EIE = 0xE8;sfr EIP = 0xF8;/* BIT Registers */ /* P0 */sbit P0_7 = P0^7; sbit P0_6 = P1^6; sbit P0_5 = P0^5; sbit P0_4 = P1^4; sbit P0_3 = P0^3; sbit P0_2 = P1^2; sbit P0_1 = P0^1; sbit P0_0 = P1^0;/* TCON */sbit TF1 = TCON^7; sbit TR1 = TCON^6; sbit TF0 = TCON^5; sbit TR0 = TCON^4; sbit IE1 = TCON^3; sbit IT1 = TCON^2; sbit IE0 = TCON^1; sbit IT0 = TCON^0;/* P1 */sbit P1_7 = P1^7; sbit P1_6 = P1^6; sbit P1_5 = P1^5; sbit P1_4 = P1^4; sbit P1_3 = P1^3; sbit P1_2 = P1^2;sbit P1_0 = P1^0;/* SCON */sbit SM0 = SCON^7; sbit SM1 = SCON^6; sbit SM2 = SCON^5; sbit REN = SCON^4; sbit TB8 = SCON^3; sbit RB8 = SCON^2; sbit TI = SCON^1; sbit RI = SCON^0;/* P2 */sbit P2_7 = P2^7; sbit P2_6 = P2^6; sbit P2_5 = P2^5; sbit P2_4 = P2^4; sbit P2_3 = P2^3; sbit P2_2 = P2^2; sbit P2_1 = P2^1; sbit P2_0 = P2^0;/* IE */sbit EA = IE^7; sbit ES1 = IE^6; sbit ET2 = IE^5; sbit ES = IE^4; sbit ET1 = IE^3; sbit EX1 = IE^2; sbit ET0 = IE^1; sbit EX0 = IE^0;/* P3 */sbit RD = P3^7; sbit WR = P3^6; sbit T1 = P3^5; sbit T0 = P3^4; sbit INT1 = P3^3; sbit INT0 = P3^2; sbit TXD = P3^1; sbit RXD = P3^0;/* IP */sbit PT2 = IP^5;sbit PS = IP^4;sbit PT1 = IP^3;sbit PX1 = IP^2;sbit PT0 = IP^1;sbit PX0 = IP^0;/* SCON1 */sbit SM0_1 = SCON1^7; // alternative FE_1 sbit SM1_1 = SCON1^6;sbit SM2_1 = SCON1^5;sbit REN_1 = SCON1^4;sbit TB8_1 = SCON1^3;sbit RB8_1 = SCON1^2;sbit TI_1 = SCON1^1;sbit RI_1 = SCON1^0;/* T2CON */sbit TF2 = T2CON^7;sbit EXF2 = T2CON^6;sbit RCLK = T2CON^5;sbit TCLK = T2CON^4;sbit EXEN2 = T2CON^3;sbit TR2 = T2CON^2;sbit C_T2 = T2CON^1;sbit CP_RL2 = T2CON^0;/* PSW */sbit CY = PSW^7;sbit AC = PSW^6;sbit F0 = PSW^5;sbit RS1 = PSW^4;sbit RS0 = PSW^3;sbit OV = PSW^2;sbit F1 = PSW^1;sbit P = PSW^0;/* WDCON */sbit SMOD_1 = WDCON^7;sbit POR = WDCON^6;sbit WDIF = WDCON^4;sbit WTRF = WDCON^3;sbit EWT = WDCON^1;sbit RWT = WDCON^0;/* EIE */sbit EWDI = EIE^4;sbit EX5 = EIE^3;sbit EX4 = EIE^2;sbit EX3 = EIE^1;sbit EX2 = EIE^0;/* EIP */sbit PWDI = EIP^4;sbit PX5 = EIP^3;sbit PX4 = EIP^2;sbit PX3 = EIP^1;sbit PX2 = EIP^0;w77858或80c302的c51头文件w77858或80c302的c51头文件内有详细寄存器介绍/*--BYTE Registers-------------------------------------------------*/sfr P0 = 0x80;sfr P1 = 0x90;sfr P2 = 0xA0;sfr P3 = 0xB0;#define p0 P0#define p1 P1#define p2 P2#define p3 P3sfr PSW = 0xD0;sfr ACC = 0xE0;sfr B = 0xF0;sfr SP = 0x81;sfr DPL = 0x82;sfr DPH = 0x83;sfr PCON = 0x87;//PCON.7(SMOD)拨特率加倍，PCON.1(PD)掉电方式，PCON.0(IDL)冻结方式//PCON.6(SMOD0)帧错检测允许，PCON.3(GF1)PCON.2(GF0)sfr TCON = 0x88;//定时控制寄存器sfr TMOD = 0x89;//"gate,c/t,m1,m0"x2定时器方式GATE=1时只有intx=1时才可以开放定时器x；//c/t =1时计书数方式，=0时定时方式。