|128x64 LCD module
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|Author:||Yin-Yang [ Sun Aug 07, 2005 14:52 ]|
|Post subject:||128x64 LCD module|
I am a terribly newbie here. I am here to learn graphic LCD as part of my hobby. Recently I have bought the 128x64 LCD module and I have tried to use one today. I understood that a datasheet states that a typical 4.5 voltage should be applied to the LCD module. So I test it in order to see it works by applying ground and 4.5V to Vss and Vdd respecively. Unfortunately I could not see anything from the 128x64 LCD display. I use KS0108 driver.
Have I missed out anything or need to add extra components in order to make it work?
Can you please kindly advise me how to bring my 128x64 LCD module alive?
|Author:||Yin-Yang [ Sun Aug 07, 2005 15:02 ]|
Here is a datasheet - http://www.hebeiltd.com.cn/lcm.datasheet/ATM12864D.pdf
I don't fully understood with electronic stuff atm as I am quite new in electronic and microcontroller.
|Author:||Yin-Yang [ Sun Aug 07, 2005 16:13 ]|
So far I have done:
Vdd = 5V
Vss = 0V
Vee = ??
Vo = ?? (Should I connect to with a variable resistor 10k??)
DB0-DB7 - connect to uC chip's port
R/W - connect to uC chip's port
D/I - connect to uC chip's port
E - connect to uC chip's port
CS1 and CS2 - connect to uC chip's port
RES - connect to uC chip's port
A - connect 8ohm resistor
K - connect to ground
I am still not sure about Vee and Vo.
|Author:||vitovitez [ Mon Aug 08, 2005 11:25 ]|
I have some problems reading the datasheet (something about chinese character). But... Vee must be the voltage needed for contrast, and must be variable between Vdd-19 and Vdd+0,3. I think you need some negative voltage supply.
|Author:||One~Zero [ Sun Sep 04, 2005 12:22 ]|
Your -VEE is the voltage needed to drive the LCD, and the VO is your contrast adjustment. According to your data sheet, you should have about -13.5vdc (specs say between -8 to -19) for your -VEE. You would connect your potentiometer for your contrast so that one pin goes to -VEE, center pin to VO, other pin to VDD.
|Author:||jacab45 [ Tue Feb 12, 2008 11:40 ]|
Hey, have you ever tried http://www.datasheetpro.com/index.php ? It is a free Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
Hope you will get what you want.
|Author:||Barbara58 [ Tue Jan 03, 2012 8:02 ]|
|Post subject:||Re: 128x64 LCD module|
I have been learning to use 128x64 LCD module with AT89C51 and I have been using FastLCD for converting bmp into a table of bytes.
I have use the table in my codes and tried to compile it. I get the result - auto segment too large.
How to put all bytes in my codes in order to display picture on my 128x64 LCD module.
I don't understand it. What is the problem?
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