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80c552 TIMER 2 baud rate generator
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Read-Only Author Mark Fifler Posted 31-Mar-2005 16:23 GMT Toolset None |  80c552 TIMER 2 baud rate generatorMark Fifler 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. |
Read-Only Author Mark Hickman Posted 1-Apr-2005 00:08 GMT Toolset C51 | RE: 80c552 TIMER 2 baud rate generator Mark Hickman 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. |
Read-Only Author Dan Henry Posted 1-Apr-2005 00:15 GMT Toolset None | RE: 80c552 TIMER 2 baud rate generator Dan Henry 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. |
Read-Only Author erik malund Posted 1-Apr-2005 13:42 GMT Toolset None | RE: 80c552 TIMER 2 baud rate generator erik malund 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 |
Read-Only Author Dan Henry Posted 1-Apr-2005 14:54 GMT Toolset None | RE: 80c552 TIMER 2 baud rate generator Dan Henry It has a T2.It is not standard. See for yourself: http://www.keil.com/dd/docs/datashts/philips/8xc5x2_ov.pdf |
Read-Only Author Stefan Duncanson Posted 1-Apr-2005 15:09 GMT Toolset None | RE: 80c552 TIMER 2 baud rate generator Stefan Duncanson "It has a T2.It is not standard." Surely the world wouldn't dare deviate from Erik's view of it? |
Read-Only Author erik malund Posted 1-Apr-2005 16:05 GMT Toolset None | RE: 80c552 TIMER 2 baud rate generator erik malund It is not standard.Well, that's the first time I have seen that --- and on April 1. Erik |
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