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.

Interface micro with TFT LCDs having RGB interface?

Status
Not open for further replies.

7rots51

Advanced Member level 4
Joined
May 17, 2002
Messages
1,184
Helped
25
Reputation
50
Reaction score
12
Trophy points
1,318
Activity points
9,651
How to Interface micro with TFT LCDs having RGB interface?
These lcds have several lines for each color (G0~G7,R0~R7,B0~B7 ,HSYNC,VSYNC,DCLK).
How to convert data to these interface?
 

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
48,418
Helped
14,252
Reputation
28,765
Reaction score
12,941
Trophy points
1,393
Location
Bochum, Germany
Activity points
280,187
You have to present digital video data to this data lines, continuously scanning the image frame, involving several MHz data rate. No "micro" can do without a full featured graphics controller.
 

doraemon

Super Moderator
Staff member
Joined
Jun 21, 2009
Messages
1,068
Helped
273
Reputation
554
Reaction score
248
Trophy points
1,343
Location
Japan
Activity points
10,597
Hello!

Just to add to what FvM said. There are TFT LCDs with an internal driver chip. This chip provides usually
enough memory for one screen, and handles everything for you.
If you look at the specs, that kind of LCD will not have the HSYNC, VSYNC and DCLK lines, but WR, RD
DATA/CMD etc... instead. So if you want to buy a color LCD that you can drive with a microcontroller,
look at the pinout and try to get info about the driver. Once you get that, you can safely buy one sample.


Dora.
 

7rots51

Advanced Member level 4
Joined
May 17, 2002
Messages
1,184
Helped
25
Reputation
50
Reaction score
12
Trophy points
1,318
Activity points
9,651
My TFT LCD driver IC is HX8238-A which have RGB interface and SPI interface,If I can not use RGB interface so maybe I use SPI.what is your idea about its SPI interface?can I use it?

What ARM Cortex M3 micros have internal graphic engine?

Is there standalone IC for this?
 

alexan_e

Administrator
Joined
Mar 16, 2008
Messages
11,895
Helped
2,021
Reputation
4,158
Reaction score
2,031
Trophy points
1,393
Location
Greece
Activity points
64,377
You can check the NXP (Philips) LPC2470, LPC2478 (ARM9) and LPC178x (CortexM3)

Alex
 

bhaskarvijaya

Newbie level 3
Joined
Sep 27, 2012
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,298
I am using HX8238-A driver for TFT display is directly interfaced to LM3S9b96. I am able to access the registers via SPI, but i am not able to update display using RGB lines(24bpp). Can i use SPI for initializing the driver IC and RGB data.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top