These posts by abhishek_h have received thanks:

AVR, ISP?
probably working. PCB artwork is also provided. pony prog schematic seems to be relatively complicated.
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Posted by abhishek_h on

AVR, ISP?
Image: http://www.sixca.com/eng/img/dev51_sch.GIF I am thinking of building this board. I have option to use AT89S51, AT89S52, AT89S53, AT89S8252.
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Posted by abhishek_h on

AVR, ISP?
I am still not clear. Suppose i have AT89Sxx. It has MISO, MOSI pins as well as Rx tx. can both be used to program? And i believe MISO, MOSI will require some h/w in beetween.
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Posted by abhishek_h on

AVR, ISP?
so what is difference does it make whether i program with ISP programmer or directly using Rx Tx lines. Is there any advantage of using the extra hardware for programming?
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Posted by abhishek_h on

AVR, ISP?
What is AVR programmer? How is it different than ISP? I noticed that the AT89Sxx series has some pins meant for ISP... arent Rx and Tx sufficient?
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Posted by abhishek_h on

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