Model No. WH2004D
►Character LCD Module 20x4
►Type: Character
►Structure : COB
►Size: 2.28 inch
►20 characters x 4 Lines
►5x8 dots includes cursor
►+5V power supply (Also available for +3V)
►Negative voltage option is only for the +3V power supply
►1/16 duty cycle
►LED can be driven by PIN1, PIN2, PIN15, PIN16 or A and K
►Interface: 6800 (ST7066 IC), option SPI/I2C (RW1063 IC)
The WINSTAR WH2004D series are 20×4 character display modules with COB structure and a 2.28-inch display size. This LCD module 20x4 is designed with the ST7066 controller IC and supports a 6800 4-bit/8-bit parallel interface as the standard configuration. For applications requiring SPI or I2C, versions of the display LCD 20x4 are available with the RW1063 controller IC.
These modules operate at +5V power supply, with an optional +3V version (negative voltage option only for +3V). The LED backlight can be driven by PIN1, PIN2, PIN15, PIN16, or A/K pins. Backlight color choices include yellow-green, blue, green, white, amber, and red. Panel options are positive gray, positive yellow-green, negative blue, and positive/negative FSTN.
The ST7066 controller IC supports multiple character font sets: English/Japanese, Western European, Eastern European, Scandinavian European, Cyrillic (Russian), and Hebrew/Arabic.
Interface Options:
► WH2004D : 6800 interface (ST7066 IC)
► WH2004D1 : SPI interface (RW1063 IC)
► WH2004D2 : I2C interface (RW1063 IC)
| Item | Dimension | Unit |
|---|---|---|
| Number of Characters | 20 Characters x 4 Lines | － |
| Module dimension | 77.0 x 47.0 x 12.4 (MAX) | mm |
| View area | 60.0 x 22.0 | mm |
| Active area | 55.1 x 17.56 | mm |
| Dot size | 0.46 x 0.42 | mm |
| Dot pitch | 0.51 x 0.47 | mm |
| Character size | 4.03 x 2.30 | mm |
| Character pitch | 4.51 x 2.78 | mm |
| Duty | 1/16 | |
| Backlight Type | LED | |
| IC | ST7066U | |
| Interface | 6800 | |
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
| Input Voltage | VI | VSS | － | VDD | V |
| Supply Voltage For Logic | VDD-VSS | -0.3 | － | 7 | V |
| Supply Voltage For LCD | VDD-Vo | -0.3 | － | 13 | V |
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | － | 4.5 | 5.0 | 5.5 | V |
| Supply Voltage For LCD | VDD-V0 | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 4.4 3.8 |
－ 4.5 － |
5.3 4.6 － |
V V V |
| Input High Volt. | VIH | － | 0.7 VDD | － | VDD | V |
| Input Low Volt. | VIL | － | Vss | － | 0.6 | V |
| Output High Volt. | VOH | － | 3.9 | － | VDD | V |
| Output Low Volt. | VOL | － | 0 | － | 0.4 | V |
| Supply Current | IDD | VDD=5.0V | 1.0 | 1.2 | 1.5 | mA |
| Pin No. | Symbol | Level | Description |
|---|---|---|---|
| 1 | VSS | 0V | Ground |
| 2 | VDD | 5.0V | Supply Voltage for logic |
| 3 | VO | (Variable) | Operating voltage for LCD |
| 4 | RS | H/L | H: DATA, L: Instruction code |
| 5 | R/W | H/L | H: Read L: Write |
| 6 | E | H,H→L | Chip enable signal |
| 7 | DB0 | H/L | Data bus line |
| 8 | DB1 | H/L | Data bus line |
| 9 | DB2 | H/L | Data bus line |
| 10 | DB3 | H/L | Data bus line |
| 11 | DB4 | H/L | Data bus line |
| 12 | DB5 | H/L | Data bus line |
| 13 | DB6 | H/L | Data bus line |
| 14 | DB7 | H/L | Data bus line |
| 15 | A | － | Power supply for B/L + |
| 16 | K | － | Power supply for B/L - |
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