Looking for a 54 pin 0.5mm fpc breakout board

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salami738
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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by salami738 » Sat Sep 23, 2017 7:39 am

Looks Good...

HENRYLIAN 3.5" 3.5inch TFT display 320*240 without control 54pin RGB TTL 0.5pitch LQ035NC111

According to the Model number LQ... it is the same. I will post the pinout from the datasheet later.

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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by salami738 » Sat Sep 23, 2017 11:22 am

A short extract from the datasheet "FT LCD Display Datasheet", Page 7 of 19, PinOut:

Pin No Pin Name Descriptions

Code: Select all

1 VBL- Backlight LED Ground   
2 VBL- Backlight LED Ground 
3 VBL+Backlight LED Power 
4 VBL+Backlight LED Power 
5 YU Y_ Up (This pin is used for resistive touch panel and active when the fpc of touch panel is connected with the fpc of display, otherwise it’s no connection) 
6 XR X_ Right (This pin is used for resistive touch panel and active when the fpc of touch panel is connected with the fpc of display, otherwise it’s no connection) 
7 ENC Not Use   
8 /RESET Hardware Reset   
9 SPENA SPI Interface Data Enable Signal 
10 SPCLK SPI Interface Data Clock11 SPDAT SPI Interface Data 
12-19B0-B7 Blue Data 
20-27G0-G7 Green Data 
28-35RO-R7 Red Data 
36 HSYNC Horizontal Sync Input   
37 VSYNC Vertical Sync Input 
38 DCLK Dot Data Clock   
39 NC Not Use   
40 NC Not Use 
41 VCC Digital Power   
42 VCC Digital Power 
43 YD Y_ Down (This pin is used for resistive touch panel and active when the fpc of touch panel is connected with the fpc of display, otherwise it’s no connection) 
44 XL X_ Left (This pin is used for resistive touch panel and active when the fpc of touch panel is connected with the fpc of display, otherwise it’s no connection) 
45 NC Not Use   
46 NC Not Use   
47 NC Not Use   
48 IF2 Control the input data format /floating   
49 IF1 Control the input data format   
50 IF0 Control the input data format   
51 NC Not Use   E
52 DE Data Enable Input 
53 GND Ground    
54 GND Ground
Backlight:
Typ: 19,8V, 20mA, 400mW

salami738
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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by salami738 » Sat Sep 30, 2017 12:15 pm

Hi,
i found a breakout board: https://www.seeedstudio.com/LCD-EXT-bre ... p-200.html
But without driver chip...

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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by mattc » Sat Nov 04, 2017 11:48 am

Feel free to make a copy of my 18-bit DPI Board.

Get the eagle schematic/board here:

https://github.com/mattc74/DPI-Pi

You can get a few of these printed at dirtypcbs.com and either just use as a breakout or populate for a fixed brightness Backlight.

:D
Last edited by mattc on Sun Nov 05, 2017 8:53 am, edited 1 time in total.

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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by Im2nelson4u » Sat Nov 04, 2017 2:13 pm

mattc wrote:
Sat Nov 04, 2017 11:48 am
Feel free to make a copy my 18-bit DPI Board:

Get the eagle schematic/board here:

https://github.com/mattc74/DPI-Pi

You can get a few of these printed at dirtypcbs.com and either just use as a breakout or populate for a fixed brightness Backlight.

:D
OMG thx so much for that, I've been trying to design my own board on easyeda the past few days and simply cannot get the board as small as yours. I have a few questions though, When put into 18-bit mode is it required to tie together Blue 0 and Blue 1 to Blue 7? I thought you just left those pins out. Have you tried doing a 24bit version of this? Also is 24V okay for the backlight? I thought 21V was the max it could take according to the dad sheet?

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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by mattc » Sat Nov 04, 2017 2:44 pm

It works fine with that voltage.

The LSB of the LCD is tied to the MSB so you get true black/white... I've had 24 bit running and can't honestly tell the difference. You also have some GPIO left over to do 'other stuff' with.
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Im2nelson4u
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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by Im2nelson4u » Sun Nov 05, 2017 2:04 am

mattc wrote:
Sat Nov 04, 2017 2:44 pm
It works fine with that voltage.

The LSB of the LCD is tied to the MSB so you get true black/white... I've had 24 bit running and can't honestly tell the difference. You also have some GPIO left over to do 'other stuff' with.
SpoilerShow
Image
Hey sorry to bother you again but I was hoping you could ID a resistor value for me? I ordered 10 board and was planning on populating it for the backlight driver.
I think I got the list down except for 1 Resistor value ( R39 ). Also do you know what side inductor? is it 5040?

1x FAN5333BSX LED Driver
1x 6.8uH Inductor???
1x 0805 10K Resistor
1x 0805 10uF Capacitor
2x 0805 1uF Capacitor
1x 0805 0.1uF Capacitor
1x MBR0540 Schottky Diode
1x SZMM5Z24VT1G Zenner Diode
1x R29 = 0805 18ohm Resistor???

I assume this was originally different resistors to choose from to supply the correct current like on the Adadruit breakoutboard. I was just wondering which value you used for max brightness.

Image

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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by mattc » Sun Nov 05, 2017 7:48 am

Yes, 5040 inductor.

18ohm resistor as ~20ma required and the FANB outputs 315mv... you can go down to 16 probably, ohms law ;)

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Hex
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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by Hex » Sun Nov 05, 2017 12:35 pm

mattc wrote:
Sat Nov 04, 2017 11:48 am
Feel free to make a copy of my 18-bit DPI Board.

Get the eagle schematic/board here:

https://github.com/mattc74/DPI-Pi

You can get a few of these printed at dirtypcbs.com and either just use as a breakout or populate for a fixed brightness Backlight.

:D
Why are you using 3.3v to boost to 24v rather than using 5v?
Also is there a 24 bit version of this?
Sent from 20,000 leagues under the sea

My Cardboard GBZ build : http://www.sudomod.com/forum/viewtopic.php?f=9&t=2851

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Re: Looking for a 54 pin 0.5mm fpc breakout board

Post by mattc » Sun Nov 05, 2017 1:03 pm

It was a quick & dirty proof of concept.. (the routing is testament to that) to test DPI configs. The schematic is copied from the adafruit tft-friend board, hence 3.3v. It's basic, but it works.

No 24 bit version as I'm using the CM3 for that.. feel free to modify & share.

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