Model No. WH2402A
►Character Display LCD 24x2
►Type: Character
►Structure : COB
►Size: 3.51 inch
►24 characters x 2 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)
WH2402A is a 3.51-inch 24x2 character LCD display module featuring 24 characters per line and 2 lines with a 5x8 dot matrix character format. The module measures 118.0 x 36.0 x 13.6 mm and has a viewing area of 94.5 x 16.0 mm.
The WH2402A is built with the ST7066 controller IC and supports a 6800 4/8-bit parallel interface by default. The module operates from a 5V power supply, with a 3V version also available. A negative voltage option is available only for the 3V version.
Multiple LCD configurations are available, including positive gray, positive yellow-green, negative blue, and positive or negative FSTN options. LED backlight colors include yellow-green, blue, green, white, amber, and red. Depending on the module configuration, the LED backlight can be connected through pins 1/2, pins 15/16, or A/K terminals.
Different character font sets are available with the ST7066 controller, including English/Japanese, English/Western European, English/Scandinavian European, and English/Cyrillic (Russian), providing options for different regional requirements.
Different interface configurations are available for the WH2402A series:
| Item | Dimension | Unit |
|---|---|---|
| Number of Characters | 24 Characters x 2 Lines | － |
| Module dimension | 118.0 x 36.0 x 13.6 (MAX) | mm |
| View area | 94.5 x 16.0 | mm |
| Active area | 88.3 x 11.5 | mm |
| Dot size | 0.60 x 0.65 | mm |
| Dot pitch | 0.65 x 0.70 | mm |
| Character size | 3.2 x 5.55 | mm |
| Character pitch | 3.7 x 5.95 | 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℃ |
－ 4.2 3.8 |
－ 4.35 － |
5.5 4.5 － |
V V V |
| Input High Volt. | VIH | － | 0.7VDD | － | 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 LED backlight ( + ) |
| 16 | K | － | Power supply for LED backlight( - ) |
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