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 http://www.winpicprog.co.uk/pic_tutorial_lcd_board.htm), 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 ...