LCD Module
LG128649
www.DataSheet4U.com
128 x 64 dots
Built in Chinese Font
ABSOLUTE MAXIMUM RATINGS
Item Supply Voltage(Logic) ...
Description
LG128649
www.DataSheet4U.com
128 x 64 dots
Built in Chinese Font
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. 5.5 7.0 VDD + 0.3 70 80 Unit V V V °C °C
MECHANICAL DATA
Item Nominal Dimensions Unit mm mm mm mm g Module Size ( W x H x T ) 113.0 x 65.0 x 10.0/13.5 72.0 x 39.0 Viewing Area ( W x H ) Dot Pitch ( W x H ) 0.52 x 0.52 0.48 x 0.48 Dot Size ( W x H ) Weight (Reflective/LED) Approx. 60 / 75
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
PIN CONNECTIONS
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol VSS V DD VO RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 PSB NC /RST VOUT 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 Power supply for logic No connection H : Data L : Instruction code H : Read L : Write Enable signal
0.7VDD - 0.3 IOH = - 0.1mA 0.8VDD 0 IOL = 0.1mA -VDD = 5.0V -Ta=25° C
BLOCK DIAGRAM
Control Signals ST7921 RS(CS) R/W(SID) E(SCLK) PS /RST DB0 DB7 32 COM VDD VSS VO VOUT LEDA LEDK Power Circuit To LSI 32 SEG 96 SEG
Data bus line
LCD Controller LSI ST7920
64 SEG 32 COM
64 SEG
128 x 32 dots 128 x 32 dots
H: Para...
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