LG122324

LG122324 122 x 32 dots Built in 8192 Chinese Fonts ABSOLUTE MAXIMUM RATINGS Item Supply Voltage(Logic) Supply Voltage(LCD) Input Voltage Operating Temp. Storage Temp. Symbol VDD - VSS VO - VSS VI Topr Tstg Min. -0.3 -0.3 -0.3 -20 -30 Max. 7.0 7.0 VDD + 0.3 70 80 Unit V V V C MECHANICAL DATA Item Module Size ( W x H x T ) Viewing Area ( W x H ) Dot Pitch ( W x H ) Dot Size ( W x H ) Weight (Reflective/LED) Nominal Dimensions 74.0 x 40.0 x 9.5/13.5 60.5 x 18.5 0.44 x 0.49 0.40 x 0.45 Approx. 28 / 38 Unit mm mm mm mm g  C  ELECTRICAL CHARACTERISTICS ( V DD =5V 0.25V ) Item Input High Voltage Input Low Voltage Output High Voltage Output Low Voltage Supply Current LCD Driving Voltage Symbol VIH VIL VOH VOL I DD VO - VSS Test Condition --Min. Typ. ----3.0 6.5 Max. Unit V DD 0.6 V DD 0.4 5.0 -V V V V mA V â PIN CONNECTIONS Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Symbol VSS V DD NC RS (CS) R/W (SID) E(SCLK) DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 PSB /RST LEDA LEDK Level 0V +5V -H/L H/L _ H,H >L H/L H/L H/L H/L H/L H/L H/L H/L H/L L +5V 0V Function GND Supply Voltage for Logic No connection H : Data L : Instruction code (Chip enable for serial mode) H : Read L : Write (Serial data for serial mode) Enable (Clock for serial mode ) 0.7VDD - 0.3 IOH = - 0.1mA 0.8VDD 0 IOL = 0.1mA -VDD = 5.0V -Ta=25 C  BLOCK DIAGRAM VSS VDD RS(CS) R/W(SID) E(SCLK) /RST PSB DB0 DB7 LCD Controller LSI ST7920 32 COM LCD PANEL 122 x 32 dots Data bus line 64 SEG 58 SEG H: Parallel mode L: Serial mode Reset signal, active "L" Power supply for LED backlight ST7921 LED BACKLIGHT SPECIFICATIONS (Ta=25 C) LEDA LEDK Item LED Backlight Forward Voltage Forward Current Emission Wave Length Symbol Vf If Typ. 4.1 120 568 Max. 4.3 --Unit V mA nm  λp