Document
LG122321
122 x 32 dots
ABSOLUTE MAXIMUM RATINGS
Item Supply Voltage(Logic) Supply Voltage(LCD) Input Voltage Operating Temp. Storage Temp. Symbol VDD - VSS VDD - VO VI Topr Tstg Min. -0.3 -0.3 -0.3 -20 -20 Max. 7.0 13.5 VDD + 0.3 70 80 Unit V V V C
MECHANICAL DATA
Item Nominal Dimensions Unit mm mm mm mm g Module Size ( W x H x T ) 84.0 x 44.0 x 9.5/13.5 60.5 x 18.5 Viewing Area ( W x H ) Dot Pitch ( W x H ) 0.44 x 0.49 0.40 x 0.45 Dot Size ( W x H ) Weight (Reflective/LED) Approx. 30 / 40
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 VDD - VO Test Condition --IOH = - 3.0mA IOL = 3.0mA VDD = 5.0V Ta=25 C Min. 2.0 - 0.3 2.4 0 --Typ. ----0.5 6.5 Max. Unit V DD 0.8 V DD 0.4 1.0 -V V V V mA V
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PIN CONNECTIONS
Pin Symbol Level Function GND Power supply for logic Operating voltage for LCD H : Data, L : Instruction code Chip selection for IC1, active "L" Chip selection for IC2, active "L" External clock input ( 2kHz ) /RD for 80 MPU, E for 68 MPU /WR for 80 MPU, R/W for 68 MPU
BLOCK DIAGRAM
C1 | C16 S1----S61 SEG SED1520DAA or Eqv. A0 /RD(E) /WR(R/W) DB0~DB7 RST CL /CS1 /CS2 V SS V DD VO Power Circuit to LSI LEDA LEDK LED Backlight
COM
LCD PANEL 122 x 32 dots
S62----S122 SEG
C17 | C32
COM
SED1520DAA or Eqv.
1 VSS 0V V DD 2 +5V -VO 3 H/L A0 4 L 5 /CS1 L /CS2 6 -CL 7 H/L /RD(E) 8 9 /WR(R/W) H/L H/L 10 DB0 DB1 H/L 11 H/L DB2 12 DB3 H/L 13 DB4 H/L 14 H/L DB5 15 H/L DB6 16 DB7 H/L 17 RST H/L 18 LEDA +5V 19 LEDK 0V 20
Data bus line
_ _ Reset, H >L:80 MPU, L >H:68 MPU Power supply for LED backlight
LED BACKLIGHT SPECIFICATIONS (Ta=25 C)
Item Forward Voltage Forward Current Emission Wave Length Symbol Vf If Typ. 4.1 120 568 Max. 4.3 --Unit V mA nm
λp
Free Datasheet http://www.Datasheet4U.com
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