ComputerVoltageSources

Attiny2313 availability is limited, only Arrow and All American at the
moment.  Should we go to a more common 28 pin part?  Cost wouldn't be much
more, maybe 60 cents or so.

John Loffink
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.com
The Wavemakers Synthesizer Web Site
http://www.wavemakers-synth.com


> -----Original Message-----
> From: ComputerVoltageSources@yahoogroups.com
> [mailto:ComputerVoltageSources@yahoogroups.com] On Behalf Of djbrow54
> 
> Fine.  A couple of notes.  The Samsung controller is compatible with
> the Hitachi controller so this means all of these parallel LCD
> Assemblies will be compatible.
> 
> I would propose an ATTINY2313 for the LCD support PCB.  Note that this
> PCB would contain only the following parts:
> 
> ATTINY2313 20 pin DIP
> 14 pin header to connect to LCD Assembly
> 3 or 4 pin header to connect to CVS PC
>   (Tx, Reset, Ground, and possibly +5)
> Input power connector for the LCD Assembly backlight
> Current limit resistor for the LCD Assembly backlight
> 8 MHz crystal and two 22 pF capacitors
> Optional 6 pin header to program the ATTINY2313 in-circuit
> Optional contrast potentiometer (my experience is to run the LCD
>   at full contrast with no potentiometer)
>