Guys:
During a program I have to periodically make a burst of 455Khz pulses and
stop when a pin changes state....

Using an pic 12F510 I can get an 8Mhz internal osc that gives me about 4
instructions to manufacture this burst and sense the end. It goes something
like this

		Code				cycles (500ns )
	Bsf 	GPIO,outbit			;0		6
	btfss	GPIO,inrxbit		;1
	goto 	main				;
	bcf 	GPIO,outbit			;3
	goto 	$-4				;4


best I can do is 5... Anybody got any better ideas I am trying to get a one
chip solution in the smallest possible space and it needs a comparator 

TIA

STeve 

		


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