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How can I set the exact delay time in microcontroller(at89c51)? (Keil)

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buts101

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Delay() in at89c51

how can i set the exact delay time in microcontroller(at89c51)...? delay() function of C is not support by keil compiler.
 

Re: Delay() in at89c51

Try this:
Code: 
//------------------------------------------------------------------------------
//	Processing of Timer 0 interrupt request
//------------------------------------------------------------------------------
void Timer0(void) interrupt 1
{
	counter++;
	TH0 = TH_0;
	TL0 = TL_0;
	TF0 = 0;
}

//------------------------------------------------------------------------------
//	Generates Time*1/100 s delay
//------------------------------------------------------------------------------
void Delay(unsigned char Time)
{
	counter = 0;
	while(counter < Time);
}

if fOSC = 22.1184 MHz:
TL_0 = 0x00
TH_0 = 0xB8
it corresponds to 1/100 s overflow
 

Delay() in at89c51

Unomano,

What's the purpose of setting TF to 0?

wek
 

Delay() in at89c51

TF0 should be the overflow flag
The timer will not continue if it is set. So you should clear TF0 to restart the timer.
 

Re: Delay() in at89c51

Can't we try to use two for() loops in nested format for the same purpose?
 

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