plz help me: interfacing of tsop 1738 with 8051

[ankushgupta]

dear friends
i am working on a project,which uses tsop1738 to detect whether there is an intrruption in the path of IR ray.i want to connect tsop with 8051 some how so that 8051 can count the interruption per second.(i will use the timer 0 of 8051 as an event counter and timer 1 to generate an interrupt every second)
the problem is that i don't know the exactly about the output of tsop.
could anyone post the output waveform and circuit to interface tsop with 8051.

 

[silvio]

Page 1 of datasheet clearly shown an NPN output transistor collector with an internal 80K pullup resistor.
More, in page 2 can be seen an application interface between an uC and TSOP1738 with an optional >10K external resitor.
**broken link removed**

Look at this page for code and some additional details regarding IR.
**broken link removed**