I have found that most 14-wire lcd's use the same generic Hitachi
(HD44780?) controller. You can find the interface and data format
anywhere. Here is one page that has some info:
http://www.myke.com/lcd.htm
You may have to experiment with the setup bits. Some single-line lcds
are programmed as two line displays, and vice versa, depending on the
application, and you will have to find the "right" setting in order to
use the entire display. (It depends on how the panel is wired to the
chip.)
I have also found, however, that the power, ground, and lcd voltage
pins are often moved around on the connector, so if there is any way
you can determine which pin is ground and which is vcc (perhaps by
inspecting the phone it came out of) you can possibly save yourself the
heartbreak of destroying the display.
LCD controller identification
Linear Mode
