hi, i'm new to microcontroller program .
i have 89c51 controller max 232 ic, but to program i need athor
programmer, is any possiblety to built my own programmer. please help
the most popular post in fora dealing with such is "why can I not
get my homemade programmer to work" and, usually, they end up with "I
give up and will buy one" or "I will change to a UART programmable
i have 89c51 ... is any possiblety to built my own programmer.
please help me
NOBODY can help you if you do not give the EXACT type and
manufacturer of the chip, there is absolutotally no such thing as
"generic programming" of '51s
i have atmel 89c51 microcontroller , and other things like max 232
, pc , cro, reg, cap.. every thing but i am not able to built my own
home made programmer. even i got a circuit from EFY book, still it
requires a pre programmer controller to program other which i dont
can any one help with this
FLIP from Atmel is the "standard" Atmel programming software for
Atmel SPI programmable chips. it works with (If you insist, a
miserable copy of) the $25 Atmel "cable".
PS 89C51 is that even ISP programmable? the 89S51
Sorry for hijack, but I have asked before about this elusive $25
programming cable without getting any answer.
I see many references to that $25 cable, but have failed to locate
I have contacted Atmel support and they have failed to supply info
about how to build one and they can't sell me one or point me to
anyone who sells them. Instead, they recommend that I invert the
reset signal and uses a STK500 starter kit as adapter.
Once upon a time, there has been a document on the Atmel site with
the description of this elusive cable. I can still find many posts
mentioning this description and specifying the - now defunct -
Anyone who can help out?
Oh, and if you google "atmel isp cable" the second result is the
document you wanted from the atmel site.
There seems to have once been a description of this cable, i.e.
how it was connected. The related link is just the pinout of the ISP
side - not the corresponding parallel port pins.
There are links to be found on the net, but the document seems to
have been pulled from the Atmel site.
I did contact Atmel support for the nordic countries last year
about it, since I then was in very big need of a cable in a hurry.
They could not produce the document or a supplier in Sweden. But
their suggested workaround was to invert the reset signal and use a
AVR SDK500 kit.
If I need to program more AT89S chips, I should probably get a
AT89ISP cable, since it is a bit more compact than the big SDK500
board. On the other hand, the machine I'm writing this on may
probably be the last machine I'll have with a parallel port.
It seems likely that the DIY schematics is more or less identical
to the official AT89ISP cable since the only signaling difference is
the inversion of the reset - something the PC program can directly