Model No. WH1202A
►Character LCD 12x2
►Small LCD Displays, Miniature LCD Display
►Type: Character
►Structure : COB
►Size: 1.56"
►12 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
►Interface: 6800 (ST7066 IC), option SPI/I2C (RW1063 IC)
WH1202A is a character LCD display module with a 12-character x 2-line format. The module measures 55.7 x 32.0 mm, with an active area of 37.85 x 11.7 mm and a diagonal size of 1.56 inches. The default supply voltage is 5V, but when using 3V, the negative voltage is limited to 3V. The module is built on a PCB with mounting holes for mechanical integration.
The WH1202A series uses the ST7066 or RW1063 controller IC depending on the interface configuration and is available with three interface options:
The 12-character x 2-line display format is suitable for presenting numerical values, text, and basic status information. Typical applications include digital thermometers, portable digital multimeters, alarm clocks, handheld test equipment, compact industrial control panels, and other embedded devices requiring a 12x2 character display.
WH1202A is available in positive and negative display modes. Positive mode is available in gray or yellow-green, while negative mode is available in blue. If you have specific display color or configuration requirements, click “ADD TO INQUIRY” above and specify them in the “Message” field.
| Item | Dimension | Unit |
|---|---|---|
| Number of Characters | 12 Characters x 2 Lines | － |
| Module dimension | 55.7 x 32.0 x 14.5(MAX) | mm |
| View area | 46.0 x 14.5 | mm |
| Active area | 37.85 x 11.7 | mm |
| Dot size | 0.45 x 0.60 | mm |
| Dot pitch | 0.55 x 0.70 | mm |
| Character size | 2.65 x 5.50 | mm |
| Character pitch | 3.20 x 6.20 | 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℃ |
－ 4.1 3.5 |
－ 4.2 － |
5.7 4.3 － |
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 | 0.5 | 1.0 | 2.0 | 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 + |
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