I was able to program three ATMEGA32 simultaneously using ISP.
In your opinion, can I program several AVRs at once with parallel? Unfortunately, I do not have a parallel programmer. Can you test it for me?
I don't know, how it's work? I already thought it shouldn't work! How many MCU can I program together?
Answer
If you use sufficiently conservative timings and ignore the MISO pins on all but one of the MCUs, it’s possible that you could program them in parallel. However, I don’t see how you could verify them in parallel unless you break out every MISO pin onto a separate pin and somehow check them all.
Unless you have a need to program truly massive numbers of MCUs, the whole thing strikes me as more effort than it’s worth.
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