How to genearate a pulse with Variable ON-Time and OFF-Time using 8253(4) ?

Thanks all reply. All of your advise are meaningful. Since I have some limitation, please kindly advise me how to generate the (1~9999)us ON / (1 ~ 9999) us OFF time pulse training using

8253(4). The MCU will be ATMEL AT89c52RD2.

In addition, the pulse train can be started and stop by external signal. Again, Condition -

1/. 8253 / 8254. 2/. MCU - AT89C52RD2 3/. Range - 1~9999 us ON Time and 1 ~ 9999us OFF time , Adjustable. 4/. Two External Signal - Level can be define. - Start : Allow the pulse output. - Stop : Disable the puls output and force the output to LOW.

Thanks all. regards, lamb.

Reply to
Loading thread data ...

It cannot be done.

-Robert Scott Ypsilanti, Michigan (Reply through this forum, not by direct e-mail to me, as automatic reply address is fake.)

Reply to
Robert Scott

I have heard that this can be done with Z80, 6MHz + 1MHz 8253. But I cannot get the details.

Does it possible using two channel to generate one pulse training ?

Just brain storm... regards, lamb

Reply to

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.