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help in interfacing with 8051

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net_tej

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i'm doing a project in which the interfacing of 8051 with mobile phone is a part of it.. please tell me how can i achieve it n how many ports of 8051 do i need.. please give details its urgent
 
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You download the datasheet from the manufacturer. Count the number of available port pins on the processor and the number of signals required for the I/O. If

Processor_Port_Pins <= I/O signals

Then you hook them up in any convenient fashion.
So what's the problem?
 
you may need around 8-Bits of data and for that 1-Port is enough. Though 8051 has 4 Ports (32 bits), the data may be serial and for that you need only Rx,Tx (2 Pins).
 
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