#include <reg51.h>
控制线：RS-P3^5;    WR-P3^6;   RD-P3^7;   CS-P1^0;   REST-P1^2;
数据线: DB0-DB7依次连接P0^0-P0^7;  DB8-DB15依次连接P2^0-P2^7;
#define  LCD_DataPortH P2     //高8位数据口
#define  LCD_DataPortL P0     //低8位数据口,P0口已经上拉10K电阻
sbit LCD_RS = P3^5;     //数据/命令切换
sbit LCD_WR = P3^6;    //写控制
sbit LCD_RD =P3^7;       //读控制
sbit LCD_CS=P1^0;  //片选
sbit LCD_REST = P1^2;       //复位   

void delayms(int count)  // /* X1ms */
{
        int i,j;
        for(i=0;i<count;i++)
                for(j=0;j<100;j++);
}
  
void Lcd_Write_Com( int  DH)  //命令
{
    LCD_RS=0;
LCD_CS =0;  
LCD_DataPortH=DH>>8;
LCD_DataPortL=DH;  
LCD_WR=0;
LCD_WR=1;
LCD_CS =1;
}
void Lcd_Write_DATA(int DH) //数据
{
    LCD_RS=1;
LCD_CS =0;      
LCD_DataPortH=DH>>8;
LCD_DataPortL=DH;     
LCD_WR=0;
LCD_WR=1;
LCD_CS =1;
}

void Lcd_Write_Com_Data( int com1,dat1) //命令数据一起
{
   Lcd_Write_Com(com1);
   Lcd_Write_DATA(dat1);
}

void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
Lcd_Write_Com_Data(0x0044,(x2<<8)+x1);
Lcd_Write_Com_Data(0x0045,y1);
Lcd_Write_Com_Data(0x0046,y2);
Lcd_Write_Com_Data(0x004e,x1);
Lcd_Write_Com_Data(0x004f,y1);
    Lcd_Write_Com(0x0022);         
   
}
void Lcd_Init(void)
{
    LCD_REST=1;
    delayms(5);
LCD_REST=0;
delayms(10);
LCD_REST=1;
LCD_CS=1;
LCD_RD=1;
LCD_WR=1;
delayms(20);
    Lcd_Write_Com_Data(0x0000,0x0001);    delayms(1);  //打开晶振
    Lcd_Write_Com_Data(0x0003,0xA8A4);    delayms(1);   //0xA8A4
    Lcd_Write_Com_Data(0x000C,0x0000);    delayms(1);   
    Lcd_Write_Com_Data(0x000D,0x080C);    delayms(1);   
    Lcd_Write_Com_Data(0x000E,0x2B00);    delayms(1);   
    Lcd_Write_Com_Data(0x001E,0x00B7);    delayms(1);   
    Lcd_Write_Com_Data(0x0001,0x2B3F);    delayms(1);   //驱动输出控制320*240  0x6B3F
    Lcd_Write_Com_Data(0x0002,0x0600);    delayms(1);
    Lcd_Write_Com_Data(0x0010,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0011,0x6070);    delayms(1);        //0x4030           //定义数据格式  16位 {MOD}
    Lcd_Write_Com_Data(0x0005,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0006,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0016,0xEF1C);    delayms(1);
    Lcd_Write_Com_Data(0x0017,0x0003);    delayms(1);
    Lcd_Write_Com_Data(0x0007,0x0233);    delayms(1);        //0x0233      
    Lcd_Write_Com_Data(0x000B,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x000F,0x0000);    delayms(1);        //扫描开始地址
    Lcd_Write_Com_Data(0x0041,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0042,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0048,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0049,0x013F);    delayms(1);
    Lcd_Write_Com_Data(0x004A,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x004B,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0044,0xEF00);    delayms(1);
    Lcd_Write_Com_Data(0x0045,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0046,0x013F);    delayms(1);
    Lcd_Write_Com_Data(0x0030,0x0707);    delayms(1);
    Lcd_Write_Com_Data(0x0031,0x0204);    delayms(1);
    Lcd_Write_Com_Data(0x0032,0x0204);    delayms(1);
    Lcd_Write_Com_Data(0x0033,0x0502);    delayms(1);
    Lcd_Write_Com_Data(0x0034,0x0507);    delayms(1);
    Lcd_Write_Com_Data(0x0035,0x0204);    delayms(1);
    Lcd_Write_Com_Data(0x0036,0x0204);    delayms(1);
    Lcd_Write_Com_Data(0x0037,0x0502);    delayms(1);
    Lcd_Write_Com_Data(0x003A,0x0302);    delayms(1);
    Lcd_Write_Com_Data(0x003B,0x0302);    delayms(1);
    Lcd_Write_Com_Data(0x0023,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0024,0x0000);    delayms(1);
    Lcd_Write_Com_Data(0x0025,0x8000);    delayms(1);
    Lcd_Write_Com_Data(0x004f,0);        //行首址0
    Lcd_Write_Com_Data(0x004e,0);        //列首址0
Lcd_Write_Com(0x0022);
}

void Pant(unsigned int color)
{
int i,j;
Address_set(0,0,239,319);

    for(i=0;i<320;i++)
  {
   for (j=0;j<240;j++)
     {
         Lcd_Write_DATA(color);
     }
   }  
}
main()
{
while(1)
{
Lcd_Init();   //tft初始化
Pant(0xf800); //红 {MOD}
delayms(1000);
Pant(0X07E0); //绿 {MOD}
delayms(1000);
Pant(0x001f); //蓝 {MOD}  
delayms(1000);
    }

}



烧入程序后，TFT模块无反应，各引脚的电位变化也能跟程序对应/是不是没写入屏幕的原因？..
我用的是12MHZ晶振