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