void LcdWd(unsigned char DAT)
{
unsigned char temp1,temp2;
LOOP1:DDRT=0xff;
DDRK=0xff;
PTT_PTT0=0;
PTT_PTT1=1;
PORTK=0xff;
PTT_PTT2=1;
DDRK=0x00;
temp1=PORTK;
PTT_PTT2=0;
PTT_PTT2=1;
PTT_PTT2=0;
temp1&=0x08;
if(temp1==0x08)
goto LOOP1;
PTT_PTT0=1;
PTT_PTT1=0;
DDRK=0xff;
temp2=DAT>>4;
PORTK=temp2;
PTT_PTT2=1;
PTT_PTT2=0;
PORTK=DAT;
PTT_PTT2=1;
PTT_PTT2=0;
}