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
►Bulit-in controller (ST7066 or Equivalent)
►5V power supply (Also available for 3V)
►Negative voltage optional for 3V power supply
►1/16 duty cycle
►Interface : 6800, 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
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | VSS | Ground |
| 2 | VDD | Power supply for logic |
| 3 | VO | Operating voltage for LCD |
| 4 | RS | H: DATA, L: Instruction code |
| 5 | R/W | H: Read L: Write |
| 6 | E | Chip enable signal |
| 7~14 | DB0~DB7 | Data bus line |
| 15 | A | Power supply for B/L + |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 55.7 × 32.0 | mm |
| Viewing Area | 46.0 × 14.5 | mm |
| Mounting Hole | 31.2 × 30.0 | mm |
| Character Size | 2.65 × 5.50 | mm |
Electrical Characteristics
| Item | Symbol | Standard Value typ. |
Unit |
|---|---|---|---|
| Input Voltage | VDD | 3/5 | V |
| Recommended LCD Driving Voltage for Normal Temp. Version module @25°C |
VDD-VO | 4.20 | V |
Display Character Address Code
| Display Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|
| DD RAM Address | 00 | 01 | 0A | 0B | ||||
| DD RAM Address | 40 | 41 | 4A | 4B |
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