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???
01/21/08 07:15
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#149796 - Difference between AT89C2051 and AT89S2051
Is there any difference between the Port 1.1 of an AT89C2051 and the AT89S2051?

I thought its compatible.

I have a hex-file compiled for the C2051. I programmed the S2051 with this hex-file. Software is running partially fine on the S2051. But TTL signals received on the port 1.1 are not identified by the S2051. Do you have an idea?

Thanks

List of 5 messages in thread
TopicAuthorDate
Difference between AT89C2051 and AT89S2051            01/01/70 00:00      
   partially fine?!            01/01/70 00:00      
      c2051/s2051            01/01/70 00:00      
   'S' means it has ISP interface            01/01/70 00:00      
   datasheet            01/01/70 00:00      

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