Im using the 80c552 and i can't found how i can use timer 2 for generate the baud rate. (actually im using timer 1, but i must change for timer 2). It's possible? PD: sorry for my english isn't enought good Thx in advanced.
Hi, I assume the 80c552 is much the same as the 80c52 so if you go here:- http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3420 then atmel have an example in c and asm as to how to use timer 2 as the baud rate generator which i am sure you should be able to modify to suit your XTAL and BAUD RATE requirements. Mark.
Some 8052 derivatives allow Timer 2 to be used for serial baud rate generation. Alas, a quick skim of an ancient '552 datasheet suggests that might not be the case for the '552.
if it has a T2, the "standard" require it useable as a baud rate generator. Erik The P89C51Rx2 datasheet at Philips has a full T2 description that AFAIK apply to ANY T2. A section is "T2 as baudrate generator" With the "a datasheet shall only show what is not in "the bible"" principle there are some divergences re T2 since some issues of "the bible" include T2 and some do not. Erik
It has a T2. It is not standard. See for yourself: http://www.keil.com/dd/docs/datashts/philips/8xc5x2_ov.pdf
"It has a T2. It is not standard." Surely the world wouldn't dare deviate from Erik's view of it?
It is not standard. Well, that's the first time I have seen that --- and on April 1. Erik