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01/09/12 07:25
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#185388 - AT89S52 Questions
Hello! I had some questions concerning AT89s52.
1)Why is P0 an open drain? Is it related to being able to use that port for addresses?
2)Why the value of 10k ohms resistor array used as pull-up on P0?
Also any source of explaining the source/sink ?(tried googling but none of the results I understood well)
Thanks!

List of 3 messages in thread
TopicAuthorDate
AT89S52 Questions      Adam Collins      01/09/12 07:25      
   because the designer      Erik Malund      01/09/12 07:47      
   Sink & Source - Basic Electronics      Andy Neil      01/09/12 11:17      

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