Character 20x4 COG LCD Display Module
Model No. WO2004B
►COG LCD 20x4
►Character LCD
►IC: IST3602
►3V power supply
►1/33 duty cycle, 1/6 Bias
►Interface : I2C
Description
WO2004B is a module of 20 characters x 4 Lines COG LCD display that has the module dimension of 74.3 x 36.4 mm, and VA size of 60.5 x 22.18 mm. WO2004B is built-in with IST3602 IC; its interface is I2C and supports 3V power supply, 1/33 duty, and 1/6 Bias. This LCD module can be operated at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃70℃; its storage temperatures range from -30℃ to +80℃.
WO2004B is available in FSTN positive LCD with white LED and without backlight, and STN Negative with white LED backlight; please contact us if you need different LCD type and LED combination.
DRAWING

SPECIFICATIONS
Interface Pin Function
Pin | Symbol | Function Description |
---|---|---|
1 | ITO ESD | Ground |
2 | V0 | LCD Power Supply |
3 | VSS | Ground(VSS2&VSS3) |
4 | VDD | Power Supply(VDD2&VDD3) |
5 | VSS1 | Ground(VSS1) |
6 | VDD1 | Power Supply(VDD1) |
7 | SDA | Serial input data |
8 | SCL | Serial input clock |
9 | RESB | Hardware Reset input pin |
10 | ITO ESD | Ground |
Mechanical Data
Item | Dimension | Unit |
---|---|---|
Number of Characters | 20 characters x 4 Lines | |
Module dimension | 74.3 x 36.4 x 6.0 | mm |
View area | 60.5 x 22.18 | mm |
Active area | 58.5 x 20.18 | mm |
Dot size | 0.45x 0.54 | mm |
Dot pitch | 0.50 x 0.59 | mm |
Character size | 2.45 x 4.67 | mm |
Character pitch | 2.95 x 5.17 | mm |
Duty | 1/33DUTY,1/6BIAS | |
Backlight Type | LED | |
IC | IST3602 | |
Interface | I2C |
Absolute Maximum Ratings
Item | Symbol | Min | Typ | Max | Unit |
---|---|---|---|---|---|
Operating Temperature | TOP | -20 | - | +70 | ℃ |
Storage Temperature | TST | -30 | - | +80 | ℃ |
Input Voltage | VIN | -0.3 | - | VDD+0.3 | V |
Power Supply Voltage | VDD | -0.3 | - | 4.0 | V |
LCD Driver Voltage | VLCD | -0.3 | - | 18.0 | V |
Electrical Characteristics
Item | Symbol | Condition | Min | Typ | Max | Unit |
---|---|---|---|---|---|---|
Supply Voltage For Logic | VDD | - | 2.7 | 3.0 | 3.3 | V |
Supply Voltage For LCD | VO-VSS | Ta=-20℃ Ta=25℃ Ta=70℃ |
- 7.6 - |
- 7.8 - |
- 8.0 - |
V V V |
Input High Volt. | VIH | - | 0.8 VDDIO | - | VDD | V |
Input Low Volt. | VIL | - | VSS | - | 0.2 VDD | V |
Output High Volt. | VOH | - | 0.8 VDDIO | - | VDD | V |
Output Low Volt. | VOL | - | - | - | 0.2 VDD | V |
Supply LCM current | IDD | VDD=3.0V | - | 0.5 | - | mA |
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