
4 Function
4.4.2 Fuse Bits
When you reload the firmware you do not need to change the fuses in any way. If this
does happen I have listed my original values:
sig=1e,96,02,ff Atmel AVR ATmega64
Lock Bits: 0xff 0b11111111
Fuses low: 0x0e 0b00001110
Fuses high: 0x89 0b10001001
Fuses ext: 0xff 0b11111111
4.5 LCD Back light
In rcline-forum its described how to install an EL-Back light behind the LCD-Display
see here:
http://www.rclineforum.de/forum/thread.php?
threadid=239048&sid=&threadview=0&hilight=&hilightuser=&page=22
The th9x is prepared to switch on and off this back light by means of an unused port
Bit of the controller (Pin PB7). You need only a few additional components. In the
schematic diagram you see an example how to connect the controller via one single
FET (BS170) to a 5V-Inverter and then to the EL-Back light. In case of using an
inverter with another input voltage, you have to change the diagram at the VC-side of
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