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Gentlemen, Does anybody know how to switch 89C51Rx2 into 12-clock mode? M.P.
Thanks, Tom, But what do you mean by "correct software"? What electric manipulations should be made with the chip to switch it into 12-clock mode? Where is it described? I found nothing in the datasheet... M.P.
But what do you mean by "correct software"? I'm sure he means for your PROM programmer. I use a Needhams' EMP-20 PROM programmer that can program 89C51RD+ parts but I'd need to get new software from Needhams' to program the RD2 part, see http://www.needhams.com. You're not trying to change the clock mode at run-time are you? You can't do that. - Mark