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06/25/12 23:50
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#187828 - Crystal value and capacitor value for P89V51RD2
Hi,

I am using the schematic given in the below lonk to design my P89V51RD2 system.
http://www.ece.ubc.ca/~jesusc/P89V51RD2_System.pdf

I donot have 22MHz crystal as given in the schematic.
I have 16MHz, 20.25MHz and 24MHz crystal.
Which one can I use with P89V51RD2 ?

I shall use RS232 for programming P89V51RD2. Is there a problem if I donot use 22MHz crystal? Will it affect baudrate?

Another point is then, what will be the capacitor value to be used with 16MHz, 20.25MHz and 24MHz crystal, if I use them?

Sincerely,
Srinivas Nayak


List of 5 messages in thread
TopicAuthorDate
Crystal value and capacitor value for P89V51RD2      Srinivas Nayak      06/25/12 23:50      
   any, choose the one that      Erik Malund      06/26/12 07:39      
   there is no 22MHz crystal in the schematic      Erik Malund      06/26/12 09:11      
      "UART value" crystal      Andy Neil      06/26/12 14:54      
   The bootloader should work with any F_CPU      David Prentice      06/26/12 10:36      

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