Negative Voltage GND (0V) Power Supply (+5V) Adjust Contrast Data Write Data Read Chip Select PIN 8 9 10 *17 18 19 20 Kontroller: T6963C SYMBOL C/D RES DB0 *DB7 FS A K SIGNAL DESCRIPTION L=Data H=Commandt Reset Signal (L active) Data Bus Font Selection Power Supply for Backlight (+) P.