LCD
LG128321-LY
www.DataSheet4U.com
128 x 32 dots + yellow green led backlight
built in Chinese font
ABSOLUTE MAXIMUM RAT...
Description
LG128321-LY
www.DataSheet4U.com
128 x 32 dots + yellow green led backlight
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. 7.0 7.0 VDD + 0.3 70 80 Unit V V V °C °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 Nominal Dimensions 84.0 x 44.0 x 14.5 70.0 x 20.0 0.52 x 0.52 0.48 x 0.48 Approx. 50 Unit mm mm mm mm g
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 6.0 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 Symbol VSS V DD VO RS (CS) R/W (SID) Level 0V +5V -H/L H/L Function GND Power supply 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
RS(CS) R/W(SID) E(SCLK) /RST PSB DB0 DB7
LCD Controller LSI ST7920
32 COM
LCD PANEL 128 x 32 dots
_ E(SCLK) H,H >L H/L DB0 DB1 H/L DB2 H/L DB3 H/L DB4 H/L H/L DB5 DB6 DB7 PSB /RST LEDK LEDA H/L H/L H/L L 0V +5V
Data bus line
64 SEG 64 SEG
H: Parallel mode...
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