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???
07/18/05 14:50
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#97570 - you are right
Responding to: ???'s previous message
Thanks guys

Your are right. I`ve a look to the suggested 8051 programmer from Ahmed.
I would make an order to my main electronic supplier. I don`t have a n AT89c51 left so I would have to buy one. I could also order an ISP mcu. Useless.

The AT89LS53 is a very interesting chip. It needs only 3V in operating mode, it`s in-system programmable and has 12k flash, enough for my needs.

I had a look in the datasheet and found out that the mcu is programmable in serial mode. It should be possible to develop software and a serial programming cable (with electronic parts) to write to the memory. Is programming in serial easier than in parallel mode?
Has anyone some suggestions for the circuit, there aren`t schematics avaliable on the i-net.
I have some C skills and worked a bit with at89c2051, but this type of mcu has not enough memory for my projects.

Greetings Karim

List of 21 messages in thread
TopicAuthorDate
Any AT89c55 programer with sources?            01/01/70 00:00      
   AT89C55            01/01/70 00:00      
   again Mr. Asim Khan's programmer !            01/01/70 00:00      
      not even for 10 chips            01/01/70 00:00      
         you are right            01/01/70 00:00      
            "serial" = ISP            01/01/70 00:00      
            Confusion !            01/01/70 00:00      
               Could someone send me Mr.Asim Kahn prg            01/01/70 00:00      
   Built Mr Asim Kahn's PGM'r for $10.            01/01/70 00:00      
      nice to know            01/01/70 00:00      
      Wichit Sirichote            01/01/70 00:00      
      if that is so            01/01/70 00:00      
         Obsolescent?            01/01/70 00:00      
      Mozart and chips            01/01/70 00:00      
      Mozart is dead?            01/01/70 00:00      
         maybe he moved to Hawaii            01/01/70 00:00      
            Hawaiian Job            01/01/70 00:00      
            I agree            01/01/70 00:00      
         Mozart death is greatly exaggerated            01/01/70 00:00      
            as a public service            01/01/70 00:00      
   One for LPT            01/01/70 00:00      

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