void GetPCF8563(uchar firsttype,uchar count,uchar *buff)
{
    uchar i;
    I2CStart();
    I2CSendByte(0xa2);
    WaitAck();//) {lcd_main1();lcd_main2();write3('f');write3('a');write3
('i');write3('l');while(1);}
    I2CSendByte(firsttype);
    WaitAck();
    I2CStart();
    I2CSendByte(0xa3);
    WaitAck();
    for(i=0;i<count;i++)
        {
        buff[i]=I2CReceiveByte();
        if(i!=count-1) SendAck();
        }
    SendNotAck();
    I2CStop();
    SomeNOP();
}
void GetPCF8563_d(uchar firsttype,uchar buff)
{
    I2CStart();
    I2CSendByte(0xa2);
    WaitAck();//) {lcd_main1();lcd_main2();write3('f');write3('a');write3
('i');write3('l');while(1);}
    I2CSendByte(firsttype);
    WaitAck();
    I2CStart();
    I2CSendByte(0xa3);
    WaitAck();
        buff=I2CReceiveByte();
    SendNotAck();
    I2CStop();    
    SomeNOP();
}
void SetPCF8563(uchar timetype,uchar value)
{
    I2CStart();
    I2CSendByte(0xa2);
    WaitAck();
    I2CSendByte(timetype);
    WaitAck();
    I2CSendByte(value);
    WaitAck();
    I2CStop();
    SomeNOP();
}
void wrtorom(uchar address,uchar num,uchar Data[])   //24c08 write data 
{
uchar i=0;
uchar *Pdata;
Pdata=Data;
    I2CStart();
    I2CSendByte(0xa0);
    WaitAck();
    I2CSendByte(address);
    WaitAck();
for(i=0;i<num;i++)
    {
    I2CSendByte(*(Pdata+i));
    WaitAck();
    }
    I2CStop();
}
void rdfromrom(uchar address,uchar num,uchar Data[]) //24c08 read control
{
uchar i;
uchar *Pdata;
Pdata=Data;
for(i=0;i<num;i++)
    {
    I2CStart();
    I2CSendByte(0xa0);
    WaitAck();//) {lcd_main1();lcd_main2();write3('f');write3('a');write3
('i');write3('l');while(1);}
    I2CSendByte(address+i);
    WaitAck();
    I2CStart();
    I2CSendByte(0xa1);
    WaitAck();
    *(Pdata+i)=I2CReceiveByte();
    SendNotAck();
    I2CStop();    
    SomeNOP();
    }
}