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LCD DISPLAYS

LCD20x4BL- 20 x 4 Character LCD Display with Backlight
Photograph
LCD20x4BL- 20 x 4 Character LCD Display with Backlight
Features
20 Characters x 4 Lines
5 x 8 Dots with Cursor
Built in Controller (HD44780 or equivalent)
+5v Power Supply
1/16 Duty Circle

Pin Layout and Circuit Diagram
LCD20x4BL- 20 x 4 Character LCD Display with Backlight

LCD20x4BL- 20 x 4 Character LCD Display with Backlight

LCD20x4BL- 20 x 4 Character LCD Display with Backlight

All Dimensions are in mm


Technical Data
Electrical Characteristics
Item Syn Conditions Min Type Max Unit
Supply Voltage for LCD VDD-VO Ta=0°C,Ta=25°C,Ta=50°C   4.5,4.2,3.9   V
Input High Vol. VIH   2.2   VDD V
Input Low Vol. VIL   -0.3   0.6 V
Output High Vol. VOH   2.4     V
Output Low Vol. VOL       0.4 V
Supply Current IDD VDD=5V   2.5 4.0 mA

Absolute Maximum Ratings
Item Symbol Min Type Max Unit
Operating Temperature TOP 0   +50 °C
Storage Temperature TST -20   +70 °C
Input Voltage VI Vss   VDD V
Supply Voltage for Logic VDD-Vss 2.7 5.0 5.5 V
Supply Voltage for LCD VDD-V0 3.0   13.0 V

Thickness
Version T1 T2 Units
LED Backlight 9.7 14.0 mm

Interface Pin Connections
Symbol Level Function No. Symbol Level Function
1 Vss   GND(OV) 9 DB 2 H/L Data Bit 2
2 VDD   VCC(+5V±5%) 10 DB 3 H/L Data Bit 3
3 Vo   Contrast ADJ 11 DB 4 H/L Data Bit 4
4 RS H/L Register Select 12 DB 5 H/L Data Bit 5
5 R/W H/L Read/Write 13 DB 6 H/L Data Bit 6
6 E H.H-L Enable Signal 14 DB 7 H/L Data Bit 7
7 DB 0 H/L Data Bit 0 15 VLED 4.2V BACKLIGHT(+)
8 DB 1 H/L Data Bit 1 16 VLSS 0V BACKLIGHT(-)

Display Character Address Code
Display Position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
DD RAM Address 80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F 90 91 92 93
DD RAM Address C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3
DD RAM Address 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F A0 A1 A2 A3 A4 A5 A6 A7
DD RAM Address D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF E0 E1 E2 E3 E4 E5 E6 E7


Controller Data Sheet
Data Sheet
Controller Data Sheet - HD44780


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