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Programming AT89C2051 via USB Programming AT89C2051 via USB
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Old 2nd May 2008, 06:59 PM   (permalink)
Default Programming AT89C2051 via USB
Can someone tell me how to program an At89C2051 MCU via USB.
If possible please suggest a circuit for the programmer.
explorerbaba is offline   Reply With Quote
Old 2nd May 2008, 07:07 PM   (permalink)
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Buy a USB programmer - any USB programmer needs a processor on board, which itself needs programming - so you need to either buy one ready built, or buy a pre-programmer processor from somewhere.
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Nigel Goodwin is offline   Reply With Quote
Old 2nd May 2008, 11:32 PM   (permalink)
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Originally Posted by explorerbaba
Can someone tell me how to program an At89C2051 MCU via USB.
If possible please suggest a circuit for the programmer.
You can do it *WITHOUT* another processor if you can switch to AT89S2051 instead. I am currently working on it, but the idea is to use a usb to serial cable, then, use some vicious bit banging techniques to simulate SPI protocol...

Some sites outhere allready made it, but only for AVRs.. i'am trying to do it for 89Sxx microcontrollers..
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Old 3rd May 2008, 08:27 AM   (permalink)
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Originally Posted by ikalogic
You can do it *WITHOUT* another processor if you can switch to AT89S2051 instead. I am currently working on it, but the idea is to use a usb to serial cable, then, use some vicious bit banging techniques to simulate SPI protocol...
The problem with that is the massive latency of USB, you can manipulate a serial port in real time, you can't USB.
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