/*--------------------------------------------------------------------------

AT89X51.H

Header file for the low voltage Flash Atmel AT89C51 and AT89LV51.

Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc.

All rights reserved.

--------------------------------------------------------------------------*/

#ifndef __AT89X51_H__

#define __AT89X51_H__

/*------------------------------------------------

Byte Registers

------------------------------------------------*/

sfr P0= 0x80;

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 P1= 0x90;

sfr SCON= 0x98;

sfr SBUF= 0x99;

sfr P2= 0xA0;

sfr IE= 0xA8;

sfr P3= 0xB0;

sfr IP= 0xB8;

sfr PSW= 0xD0;

sfr ACC= 0xE0;

sfr B= 0xF0;

/*------------------------------------------------

P0 Bit Registers

------------------------------------------------*/

sbit P0_0 = 0x80;

sbit P0_1 = 0x81;

sbit P0_2 = 0x82;

sbit P0_3 = 0x83;

sbit P0_4 = 0x84;

sbit P0_5 = 0x85;

sbit P0_6 = 0x86;

sbit P0_7 = 0x87;

/*------------------------------------------------

PCON Bit Values

------------------------------------------------*/

#define IDL_0x01

#define STOP_0x02

#define PD_0x02/* Alternate definition */

#define GF0_0x04

#define GF1_0x08

#define SMOD_0x80

/*------------------------------------------------

TCON Bit Registers

------------------------------------------------*/

sbit IT0= 0x88;

sbit IE0= 0x89;

sbit IT1= 0x8A;

sbit IE1= 0x8B;

sbit TR0= 0x8C;

sbit TF0= 0x8D;

sbit TR1= 0x8E;

sbit TF1= 0x8F;

/*------------------------------------------------

TMOD Bit Values

------------------------------------------------*/

#define T0_M0_0x01

#define T0_M1_0x02

#define T0_CT_0x04

#define T0_GATE_ 0x08

#define T1_M0_0x10

#define T1_M1_0x20

#define T1_CT_0x40

#define T1_GATE_ 0x80

#define T1_MASK_ 0xF0

#define T0_MASK_ 0x0F

/*------------------------------------------------

P1 Bit Registers

------------------------------------------------*/

sbit P1_0 = 0x90;

sbit P1_1 = 0x91;

sbit P1_2 = 0x92;

sbit P1_3 = 0x93;

sbit P1_4 = 0x94;

sbit P1_5 = 0x95;

sbit P1_6 = 0x96;

sbit P1_7 = 0x97;

/*------------------------------------------------

SCON Bit Registers

------------------------------------------------*/

sbit RI= 0x98;

sbit TI= 0x99;

sbit RB8= 0x9A;

sbit TB8= 0x9B;

sbit REN= 0x9C;

sbit SM2= 0x9D;

sbit SM1= 0x9E;

sbit SM0= 0x9F;

/*------------------------------------------------

P2 Bit Registers

------------------------------------------------*/

sbit P2_0 = 0xA0;

sbit P2_1 = 0xA1;

sbit P2_2 = 0xA2;

sbit P2_3 = 0xA3;

sbit P2_4 = 0xA4;

sbit P2_5 = 0xA5;

sbit P2_6 = 0xA6;

sbit P2_7 = 0xA7;

/*------------------------------------------------

IE Bit Registers

------------------------------------------------*/

sbit EX0= 0xA8;/* 1=Enable External interrupt 0 */

sbit ET0= 0xA9;/* 1=Enable Timer 0 interrupt */

sbit EX1= 0xAA;/* 1=Enable External interrupt 1 */

sbit ET1= 0xAB;/* 1=Enable Timer 1 interrupt */

sbit ES= 0xAC;/* 1=Enable Serial port interrupt */

sbit ET2= 0xAD;/* 1=Enable Timer 2 interrupt */

sbit EA= 0xAF;/* 0=Disable all interrupts */

/*------------------------------------------------

P3 Bit Registers (Mnemonics & Ports)

------------------------------------------------*/

sbit P3_0 = 0xB0;

sbit P3_1 = 0xB1;

sbit P3_2 = 0xB2;

sbit P3_3 = 0xB3;

sbit P3_4 = 0xB4;

sbit P3_5 = 0xB5;

sbit P3_6 = 0xB6;

sbit P3_7 = 0xB7;

sbit RXD= 0xB0;/* Serial data input */

sbit TXD= 0xB1;/* Serial data output */

sbit INT0 = 0xB2;/* External interrupt 0 */

sbit INT1 = 0xB3;/* External interrupt 1 */

sbit T0= 0xB4;/* Timer 0 external input */

sbit T1= 0xB5;/* Timer 1 external input */

sbit WR= 0xB6;/* External data memory write strobe */

sbit RD= 0xB7;/* External data memory read strobe */

/*------------------------------------------------

IP Bit Registers

------------------------------------------------*/

sbit PX0= 0xB8;

sbit PT0= 0xB9;

sbit PX1= 0xBA;

sbit PT1= 0xBB;

sbit PS= 0xBC;

sbit PT2= 0xBD;

/*------------------------------------------------

PSW Bit Registers

------------------------------------------------*/

sbit P= 0xD0;

sbit FL= 0xD1;

sbit OV= 0xD2;

sbit RS0= 0xD3;

sbit RS1= 0xD4;

sbit F0= 0xD5;

sbit AC= 0xD6;

sbit CY= 0xD7;

/*------------------------------------------------

Interrupt Vectors:

Interrupt Address = (Number * 8) + 3

------------------------------------------------*/

#define IE0_VECTOR0/* 0x03 External Interrupt 0 */

#define TF0_VECTOR1/* 0x0B Timer 0 */

#define IE1_VECTOR2/* 0x13 External Interrupt 1 */

#define TF1_VECTOR3/* 0x1B Timer 1 */

#define SIO_VECTOR4/* 0x23 Serial port */

#endif