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  1. #1
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    AT89s51 programmer and DB25

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Name:	downloader.jpg 
Views:	17 
Size:	195.4 KB 
ID:	78889


    Hiiii ....

    Can any one tell me the circuit attached below will run...??? Or something has to change..

    Actually I have 5(five) AT89S51 IC's and they are wasting without Programmer ..

    I read all the Posts and reply's on to making AT89S51 & AT89C51 programmer but there is no efficient technique for programmer...and I waste so much...

    So please help me to make perfect Programmer ...thanku ...!!!

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  2. #2
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    Re: AT89s51 programmer and DB25

    Simplest 25-pin LPT 89S51/52 programmer :

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Name:	Asim's ISP loader.GIF 
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ID:	78898

    From USB port you can take 5V.

    Tested and working like charm.




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  3. #3
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    Re: AT89s51 programmer and DB25

    Thank you very much... sir

    there one problem ..I have ISP programmer which I use NXP P89v51RD2BN MCu IC , I programmed this IC 40 to 50 times and it is working but now it is not working properly when Flash magic show Reset the device in ISP mode and I hold the reset button then it is not reset at all...I mean what is the problem..can U tell me please...Im confused
    Last edited by niranjan23; 19th August 2012 at 15:40.



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