Character LCD Display 20x2
Model No. WH2002L
►Character LCD 20x2
►5x8 dots includes cursor
►Bulit-in controller (ST7066 or Equivalent)
►+5V power supply (Also available for +3V)
►Negative voltage optional for +3V power supply
►1/16 duty cycle
►LED can be driven by PIN1, PIN2, PIN15, PIN16 or A and K
►Interface : 6800, option SPI/I2C (RW1063 IC)
DESCRIPTION
WH2002L is a 20x2 Character LCD display which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel. These LCD display 20x2 modules are also available in SPI and I2C interface by using RW1063 controller IC. WH2002L is available in several different backlight colors including blue, green, yellow-green, amber, red and white LEDs. There are different character fonts/texts available for ST7066 IC including English/Japanese, English/West European, English/Scandinavian European, or English/Cyrillic (Russian) as options. This module can operate at temperature from -20℃ to + 70℃; its storage temperature ranges from -30℃ to + 80℃.
There are different interface options for WH2002L series, details as below:
►WH2002L : 6800 interface (ST7066 IC)
►WH2002L1 : SPI interface (RW1063 IC)
►WH2002L2: I2C interface (RW1063 IC)
There are different interface options for WH2002L series, details as below:
►WH2002L : 6800 interface (ST7066 IC)
►WH2002L1 : SPI interface (RW1063 IC)
►WH2002L2: I2C interface (RW1063 IC)
DRAWING
Character LCD 20x2 Datasheet
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | VSS | Ground |
| 2 | VDD | Power supply for logic |
| 3 | VO | Contrast Adjustment |
| 4 | RS | Data/ Instruction select signal |
| 5 | R/W | Read/Write select signal |
| 6 | E | Enable signal |
| 7~14 | DB0~DB7 | Data bus line |
| 15 | A | Power supply for B/L + |
| 16 | K | Power supply for B/L - |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 180.0 × 40.0 | mm |
| Viewing Area | 149.0 × 23.0 | mm |
| Mounting Hole | 172.0 × 32.0 | mm |
| Character Size | 6.0 × 9.66 | mm |
Electrical Characteristics
| Item | Symbol | Standard Value typ. |
Unit |
|---|---|---|---|
| Input Voltage | VDD | 3/5 | V |
| Recmmended LCD Driving Voltage for Normal Temp. Version module @25°C |
VDD-VO | 4.35 | V |
Display Character Address Code
| Display Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | --- | --- | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DD RAM Address | 00 | 01 | 13 | |||||||||||||
| DD RAM Address | 40 | 41 | 53 |
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