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 |