has an LCD12864.
I can't believe there is no backlight. Have I missed something?
The OM13082 board uses LCD12864 as liquid screen, the LCD12864 liquid screen has the backlight pins exactly. The Pin 19 is LEDA pin(it should connect +5V of backlight) , the pin 20 is LEDK pin(it should connect to GND, the GND of back light).
This is the data sheet of LCD12864, but it is written with Chinese.
Regarding the board, I think the LEDA/LEDK should be connected to +5V rather than a capacitor.
The pins in your document do not match the display ribbon or the circuit diagram on the OM13082 board.
There is no evidence of LEDA/LEDK on the OM13082 board connector. There are 20 pins on the LCD and 28 pins on the external end of the ribbon cable. The unused 8 pins are connected to capacitors on the OM13082 board (presumably for a different LCD display).
Here are the pins:
LCD12864 ribbon FPC-WKG12864...ST7565S controller OM13082 OM13082LCD side external connector connector CCT======== ======================= ========= ======= 1 CS 1 CS R8 -> CS 2 /RES 2 RST nRST 3 CD 3 C/D R11 -> CD 4 4 WR (NC) 5 5 RD (NC) 6 D0 6 D0 (NC) 7 D1 7 D1 (NC) 8 D2 8 D2 (NC) 9 D3 9 D3 (NC) 10 D4 10 D4 (NC) 11 D5 11 D5 (NC) 12 D6(SCL) 12 D6/SCK SCLK13 D7(SI) 13 1 - 13 = thin wires D7/SID MOSI14 VSS 14 Thick wire VSS GND17 VOUT 15 VOUT C20 -> GND 16 NC CAP3P C14 17 NC CAP1N C14/C18 18 NC CAP1P C1815 19 CAP2P C1916 20 CAP2N C19 21 NC V4 C13 -> VDD 22 NC V3 C12 -> VDD 23 NC V2 C11 -> VDD 24 NC V1 C10 -> VDD 25 NC V0 C9 -> VDD18 C86 26 L:C86/H:C68 VDD MPU interface. H = 6800 series. L = 8080.19 P/S 27 L:S/H:P GND L = serial (SCL/SI)20 28 Thick wire VDD VDD VDD
Thanks, I see.
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