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Jim Granville
06/05/13 22:25
Read: 908 times


 
#189874 - SS is needed
Responding to: Mikkel C. Simonsen's previous message
Mikkel C. Simonsen said:

It looks like the SS is part of the programming interface. So why doesn't the 89ISP manual mention it at all? But I pulled it high with a 10k resistor.


If you look at
Figure 23-4. ISP Command Packet

then I'd say SS is needed as a framing signal. ie It will not work left high.

Check the programmer for a pin that behaves like SS, even if it is not documented.

List of 18 messages in thread
TopicAuthorDate
Programming AT89LP214      Mikkel C. Simonsen      06/05/13 12:02      
   easily      Erik Malund      06/05/13 13:26      
      Not so easy with an Arghmel      Mikkel C. Simonsen      06/05/13 15:53      
   How certain are you of the applicability of your cable?      Richard Erlacher      06/05/13 15:26      
      Correct, ancient, cable      Mikkel C. Simonsen      06/05/13 16:08      
         No Crystal needed      Jim Granville      06/05/13 18:52      
            More testing      Mikkel C. Simonsen      06/05/13 21:13      
               SS is needed      Jim Granville      06/05/13 22:25      
                  The secret SS pin      Mikkel C. Simonsen      06/06/13 06:29      
                     Secret SS      Michael Karas      06/06/13 14:36      
                        Parallel ports are easy to find...      Mikkel C. Simonsen      06/06/13 17:19      
                           Bugs...      Mikkel C. Simonsen      06/06/13 18:17      
                               Bugs...      Jim Granville      06/06/13 20:05      
                                 Size matters      Mikkel C. Simonsen      06/06/13 20:24      
                                    with all this stupid stuff I would immediately ...      Erik Malund      06/07/13 07:59      
                                       Alternatives      Mikkel C. Simonsen      06/09/13 13:35      
                              What do you expect ... it's ATMEL      Richard Erlacher      06/06/13 20:52      
                     this is ATMEL ... what do you expect?      Richard Erlacher      06/06/13 20:51      

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