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08/21/08 06:01
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 		 #157608 - please consider
Responding to: ???'s previous message
Hai Muthuswamy Dikshit,

Please consider that you must using 74HC244/similiar for first programming.
According to Wichit and Asim....

There's lot similiar expierience when we attached directly to LPT port.
You should consider using simple programming from Wichit and Asim that the power supply from USB port.
THat's works.

Best regards
Jeckson Ben J




List of 34 messages in thread
TopicAuthorDate
Programming 8051/8052            01/01/70 00:00      
   Get something ready to do to start...            01/01/70 00:00      
   here's a simple ISP cable for 89S51/2            01/01/70 00:00      
      ... and HOPE            01/01/70 00:00      
    or DS89C450            01/01/70 00:00      
      Not the fastest by 3::1            01/01/70 00:00      
         There are features ...            01/01/70 00:00      
            Pray explain            01/01/70 00:00      
               Some features really DO help            01/01/70 00:00      
                  why fiddle with MODE 0            01/01/70 00:00      
                     There aren't many reasons, but SPI isn't one            01/01/70 00:00      
                        you are describing SPI            01/01/70 00:00      
                           Have a look!            01/01/70 00:00      
                              luvverly !            01/01/70 00:00      
                                 ... and what I really like ...            01/01/70 00:00      
                                    nope            01/01/70 00:00      
                                       You missed a thing or two, Erik            01/01/70 00:00      
    i edit my answer as            01/01/70 00:00      
   AT89S5X or DS89C450MNG            01/01/70 00:00      
   Back to Topic-here is what I tried for days..            01/01/70 00:00      
      two mistakes            01/01/70 00:00      
      Logic Low Levels?            01/01/70 00:00      
      please consider            01/01/70 00:00      
         Abt ISP cable ang voltage level            01/01/70 00:00      
            That how most of these posts go            01/01/70 00:00      
               schematics at last!            01/01/70 00:00      
                  no, the frequency does not matter            01/01/70 00:00      
            Maybe a helpful link            01/01/70 00:00      
            Where you measure the voltage makes a difference            01/01/70 00:00      
               ISP Schematics at last!            01/01/70 00:00      
                  Keep your work clean and wires short            01/01/70 00:00      
                  See if this suits you...            01/01/70 00:00      
      EA pin should be high            01/01/70 00:00      
         EA high not necessary during ISP            01/01/70 00:00      

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