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'Multi-backplane LCD Driver'
1999\04\22@121952 by GregH

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I'm trying to write an LCD driver which has 4 backplanes and 6 signal lines
to produce 24 segments.  I know most multi-backplane LCDs use hardware
drivers, but my application is VERY cost sensitive.  I'm planning on using a
PIC16C58.  Any help would be greatly appreciated.

1999\04\28@142404 by John Payson

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|I'm trying to write an LCD driver which has 4 backplanes and 6 signal lines
|to produce 24 segments.  I know most multi-backplane LCDs use hardware
|drivers, but my application is VERY cost sensitive.  I'm planning on using a
|PIC16C58.  Any help would be greatly appreciated.

Is the 4x6 arrangement mandatory?  If you can change it to 3x8, you
could use 11 port pins to do the driving [or 6 port pins and a '595,
or 3 and two '595's with five '595 outputs left over, etc.]  The tim-
ing required is a bit "interesting" but not infeasible.

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