Info needed on UC-24908 LCD Board with M38067 mcu

[ele_ssar]

Hi,
I have LCD - UC242908 (SamSung) and I've found this infos.

On the back there is M38067 mcu and the 16 pins connector of the board is wired like this :

16 - pin 74 mcu (P67/AN7)
15 - pin 30 mcu (Vss)
14 - pin 75 mcu (P66/AN6)
13 - connected to R7 on the board
12 - pin 76 mcu (P65/AN5)
11 - pin 71 mcu (Vcc)
10 - pin 77 mcu (P64/AN4)
9 - connected to R3 on the board
8 - pin 78 mcu (P63/AN3)
7 - pin 26 mcu (P41)
6 - pin 79 mcu (P62/AN2)
5 - pin 27 mcu (P40)
4 - pin 80 mcu (P61/AN1)
3 - pin 23 mcu (P42/INT0)
2 - pin 1 mcu (P60/AN0)
1 - pin 22 mcu (P43/INT1)

I think that data bus is :
2 - 4 - 6 - 8 - 10 - 12 - 14 - 16
D0 D1 D2 D3 D4 D5 D6 D7

MCU power :
11 = +5v
15 = gnd

But for 7, 5, 3, 1 I don't understand fonctionnality and

pins 13 and 9 are connected like this (I think that is LCD power but I dont know how to connect) :

                        ____R________________________________________ 
                       |             |                               | 
                       |             |                               | 
13 -------R--------------------------T                               R 
                                     |                               | 
                                     |                               | 
                             --------T                               | 
                             |       |___ pin 10 mcu(P57/DA2)        | 
                             |                                       | 
                             +---------------------------------------| 
                             | 
9 --------R----------------- T 
                             | 
                             GND

Where R = resistor and T = transistor (npn, pnp ???)

how to conect this pin ???

Thanks in advance

 

[ele_ssar]

Hey , info needed please...

 

[Jay.slovak]

I can't help you much...
The transistor has to be NPN (BC337....), probably to turn on LCD backlight, and resistor should be ~1K...

I hope this helps.

 

[Nigel Goodwin]

Almost all LCD text modules are compatible with the Hitachi HD44780, they use 14 pins for the interface (see ), and optionally an extra two (giving your 16 pins) if they have a backlight.

There's also an excellent LCD article on the EPE website at http://www.epemag.wimborne.co.uk/resources.htm

 

[ele_ssar]

thanks

I try the test board on EPE website ...