Saturday, 28 July 2012

Atmel Programmer


EASY PROGRAMMER ISP 89SXXX
Introduction
This ISP Programmer can be used either for in-system programming or as a stand-alone spi programmer for Atmel ISP programmable devices. 

Hardware
Figure T.4 shows the circuit diagram of the in-system programmer interface, the power to the interface is provided by the
target system. The 74LS244 ic isolate and buffer the parallel port signals.

No
Component
Discription
1
Connector DB 25

2
6 Parallel Cable
about 0.5 meter
3
Connector Header 6 pin

4
House Connector DB 25

5
74LS244

6
PCB
about 5 x 5 cm


Figure T.4 Schematic Diagram Programmer with LPT Connection
Use ATMEL ISP Software to program the microcontroller.

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