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Traditional 2550


This the 2008 design with 2 switches. One for reset and one for run.
SMD resistors are on the soldered side.


SCHEMATIC


BOARD





download inkscape file of this drawing


IMPLANTATION


BILL OF MATERIALS



1      18F2550 I/SP
1      USB connector type B
1      XTAL 20 Mhz
2      22 pF            
1      47 μF                 
1      220 nF
1      100 nF
2      470 ohms resistor
1      10k resistor
1      CI support 28 pin
4      pin header 2.54 mm
2      jumper
2      switch
18    CMS resistor 470 ohms
1      Terminal block 2 positions
1      5V Regulator
2      Green led


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