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AN #200 - AVR ISP Programmer Print
AVR ISP Programmer

Application note by Mike Crean

Also at the bottom of this note, an AVR ISP programmer PCB layout from Pedro Silva

I have made a PCB for the simple SPI programmer found in the Bascom AVR help file. It uses a DB25 pin male plug to connect to a PC or Lap Top parallel port. It uses a cable with two pin and four pin plugs to connect to my AVR projects, these plugs are the same type used on the Hotchip cable.  

 NOTE : The pin outs to the two plugs are NOT THE SAME AS the HOTCHIP pin outs.  

The programmer uses the STK200/STK300 Programmer option found in the Options – Programmer menu of Bascom AVR.. I have successfully used the SPI programmer with Win95, 98, ME and 2000 pro. I have not used it with NT. 

Programmer connected to AT90S8535-8PI eurocard master control board. 

  

 

     

Connector pin outs 

 4-PIN PLUG  COLOUR  AVR-Pin DESCRIPTION 
1 Blue  6  MOSI 
2 Yellow  7 MISO 
3 Green  8 SCK 
4 White  9 ReSet 

  

2-PIN PLUG  COLOUR  AVR-Pin  DESCRIPTION 
1 Red  10 5 vo lt +
2 Black  11 5 volt –
 

I have used standard 6 core data cable for the lead, shield is connected to – at the SPI adaptor end only. I have run up to 5 meters of cable with out any problems.  

  

For price and supply of PC board only, or fully assembled and tested units with 1.5 meter 

cable please Email Mike Crean, c/o autlec@optusnet.com.au  

  

Protel overlays for the simple SPI Programmer 

   

  

Schematic for the SPI Programmer (from Bascom AVR PDF help files) 

   

  

Download Protel overlay file from Mike Crean.

Download AVR ISP Programmer files from Pedro Silva