Display LCD 12x2, Small LCD Displays, Miniature LCD Display
Model No. WH1202A
►Character LCD 12x2
►Small LCD Displays, Miniature LCD Display
►5x8 dots includes cursor
►5V power supply (Also available for 3V)
►Negative voltage optional for 3V power supply
►1/16 duty cycle
►Interface: 6800 (ST7066 IC), option SPI/I2C (RW1063 IC)
Description
WH1202A model is a 12 character by 2 line small LCD display which having the outline dimension of 55.7 x 32 mm, diagonal size 1.6 inch. The WH1202A display LCD 12x 2 modules include positive mode with gray or yellow/green LCD and negative mode with blue LCD color options. These miniature LCD displays have different interfaces available, built in with ST7066 controller which default 6800 4/8-bit parallel interface, or optional SPI and I2C by using RW1063 IC.
There are three interface options for WH1202A series, details as below:
►WH1202A : 6800 interface (ST7066 IC)
►WH1202A1: SPI interface (RW1063 IC)
►WH1202A2: I2C interface (RW1063 IC)
There are three interface options for WH1202A series, details as below:
►WH1202A : 6800 interface (ST7066 IC)
►WH1202A1: SPI interface (RW1063 IC)
►WH1202A2: I2C interface (RW1063 IC)
DRAWING

Data source ref:WH1202A-TMI-JT
SPECIFICATIONS
12x2 Character LCD Datasheet
Interface Pin Function
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 + |
General Specification
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 | |
Duty | 1/16 | |
Backlight Type | LED | |
IC | ST7066U | |
Interface | 68 series |
Absolute Maximum Ratings
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 |
Electrical Characteristics
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 |
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