Hi Rich,
If it has an HD44780 or equivalent chipset, then it probably has a 14 or
16 pin connection and follows the standard pinout. The extra two pins on
the 16 version are for a backlight. You can make an educated guess if
pin 1 is ground and pin 2 is V+ by looking for a ground connection to
the metal bezel, and if there's a decoupling cap V+ to ground.
Cheerful regards, Bob



On Wed, Oct 14, 2015, at 11:47 PM, Richard R. Pope wrote:
> Hello all,
>      I have acquired a lcd made by wytron. I am trying to find a=20
> datasheet for this. The wytron number is 200312-0033. The printed number=
=20
> on the circuit board is VCM-20201A. There is a small paper tag on one of=
=20
> the processors labeled VCM-20201AFYSAY-A. On the paper tag is another=20
> number. OEM0300047.  Since there are two processors I know that this is=20
> a 4 row lcd. Any help with this will be appreciated.
> Thanks,
>=20
> --=20
> Richard R. Pope
> President
> Reedsburg Area Model Railroad Club, RAMRC
> 1230 19th Street #5
> Reedsburg, WI 53959
> 608-768-7448
> mechanic_2@charter.net
>

--=20
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