Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

LCD 4X40 with Two enable Pin

Status
Not open for further replies.
Fragrance

Fragrance

Advanced Member level 4
Joined
Jul 26, 2002
Messages
1,190
Helped
248
Reputation
496
Reaction score
202
Trophy points
1,343
Location
East Of Earth
Activity points
8,933
Hi

I need CG ram OR Dram address for row1 row 2 row 3 and row 4 colud some one help me with this

regards
Fragrance
 

Do you have the full model # of the LCD ? Who makes it ?
 

The 40x4 LCD is just like two 20x4 LCDs put side by side with two separate HD44780 controllers. While there may be varients depending on manufacturer, What I would do is the use the two controllers independently as 20x4 and see what goes where. It should not be difficult to find out.
 

i am new to lcd's ,i am at the first year of electrical engineerng
is it posible to introduce some sites to me for getting infomation
hank you

Do not start a new topic within a topic!!!
If you have a question start a new thread instead!!!
/davorin
 

techie said:
The 40x4 LCD is just like two 20x4 LCDs put side by side with two separate HD44780 controllers. While there may be varients depending on manufacturer, What I would do is the use the two controllers independently as 20x4 and see what goes where. It should not be difficult to find out.
Click to expand...

hi

i have found the data sheet for my display i just want to know what will the cgram address for the line 1 and 2,3 ,4 if some one help with this
i know it has two controller one releated to e1 and other with e2
 

The addresses for cgram are usually 8 - 5x8dots from address 0 of the cgram, selected by register.
Are you sure you do not mean ddram, which would be:
line 1 (0x00) Chip Select 1
line 2 (0x40) Chip Select 1
line 3 (0x00) Chip Select 2
line 4 (0x40) Chip Select 2

Sorry if I do not understand your question.

Regards
NTFreak
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top