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Programming a AT89Cxx51 microcontroller
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Programming a AT89Cxx51 microcontroller

by moloch on Tue Aug 19, 2008 8:36 am

Hi,

I'm looking to program a AT89Cxx51 microcontroller. I had a look at http://www.evilmadscientist.com/article ... rgetboards to make a target board for this chip, and then use your USBtinyISP AVR Programmer kit. However, when I look at the datasheets for AT89C1051, AT89C2051 or AT89C4051, I can't find the MOSI, MISO or SCK on the chip and this is the first time I'm programming AVR's, so I'm quite clueless. I looked for programmers for AT89 series, but most of the time, they are over $100 US excl. shipping, and I kinda want the cheapy version and I would like to build it myself ;) . Is there anyone who can give me a hand here?
moloch
 
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Re: Programming a AT89Cxx51 microcontroller

by SolidSilver on Tue Aug 19, 2008 10:51 am

moloch wrote:I'm looking to program a AT89Cxx51 microcontroller. I had a look at http://www.evilmadscientist.com/article ... rgetboards to make a target board for this chip, and then use your USBtinyISP AVR Programmer kit. However, when I look at the datasheets for AT89C1051, AT89C2051 or AT89C4051, I can't find the MOSI, MISO or SCK on the chip and this is the first time I'm programming AVR's, so I'm quite clueless.


I found a data sheet for the 1051 chip, and it doesn't look like that series can be programmed with a USBtiny. The sheet details the process, involving a lot of manipulation of port 1, but no ISP (MOSI/MISO/SCK). Maybe one of the ATmega line would work for your project?
SolidSilver
 
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by westfw on Tue Aug 19, 2008 12:53 pm

The AT89Cxx51 is NOT an "AVR" microcontroller, although I vaguely recall hearing that some of the AVR programmers could also do teh 8051 CPUs (STK500? It does everything!) Looking at the 89c2051 datasheet, it looks like it does NOT do any sort of serial programming; more like "High voltage parallel programming" akin to some of the very old AVRs...
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