'LCD Applications: display managers'
There are several levels to such an application, hardware access probably
the easiest, assuming some form of user interaction. I wrote a display
manager that handled 4 x 20 display and a 4x4 keypad (the keypad was on
another chip), centered text lines, European accented characters, text and
numeric entry fields, editing, including backspacing, insertion of choices
from a list and so on. It can be done, I managed to fit it all on a 57
with a 2-wire serial command/keystroke/reply interface and an I2C bus to
access menu text.
The LCD I used was really easy at the hardware level: parallel 8 bit data,
a command/data line, and a clock/strobe. The biggest problem was the
strobe length: it varied depending on data or command type.
The point I'm trying to make is: what are you going to do with this LCD?
Static display of status messages, or user interaction. PIC, PC or
mainframe, design it carefully right from the start.
While we are on a LCD thread. There is 4 and 8 bit parallel
C code on our BBS. It is essentially the same as any one
of a multitude of other code packages except it is written
in C and the same source works on 9 or 10 platforms with
no changes other than port definitions.
Does anyone have a favorite graphics display with 64 *128 to
128 * 256 resolution? How about touch overlays?
I have an LCD display that I have been wanting to find hookup data on.
The display area is 5.9" X 1.7". The driver chip is a HD61830AOO (just one)
and on the back of the pcb is the number _LM213XB_ . Any info on where I
could get info is much appreciated. Thanx in advance.
On Tue, 28 Jan 1997, Walter Banks wrote:
>I have an LCD display that I have been wanting to find hookup data on.
>The display area is 5.9" X 1.7". The driver chip is a HD61830AOO (just one)
>and on the back of the pcb is the number _LM213XB_ . Any info on where I
>could get info is much appreciated. Thanx in advance.
This is an Hitachi chip. Their LCD data book contains the info
you need. If I'm back at my office between now and Monday (and
nobody else has given you more info) I will put some details on
(or you could just call Hitachi and demand they support your use
of the component :) )
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