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8x2 Character LCD Display Module
Model No. WH0802A1
►Character LCD 8x2
►5x8 dots includes cursor
►+5V power supply (Also available for +3V)
►Negative voltage optional for +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)
Description
WH0802A1 is an 8 character by 2 lines 8x2 character LCD display. It is available in no backlight or with LED backlight options. This 8x2 LCD module is available in various LCD panel colors including gray, yellow/green and blue LCD options. WH0802A1 LCD module is built in with ST7066 controller (or equivalent). The ST7066 IC has different language fonts as options, there are English/Japanese, English/Western European, English/ Eastern European, English/Scandinavian European, English/Cyrillic (Russian), and Hebrew/Arabic WH0802A1 model has different interfaces available, it’s default 6800 4/8-bit parallel 6800 interface, also it’s optional SPI and I2C by using RW1063 IC.
There are three interface options for WH0802A1 series, details as below:
►WH0802A1: 6800 interface (ST7066 IC)
►WH0802A2: SPI interface (RW1063 IC)
►WH0802A3: I2C interface (RW1063 IC)
There are three interface options for WH0802A1 series, details as below:
►WH0802A1: 6800 interface (ST7066 IC)
►WH0802A2: SPI interface (RW1063 IC)
►WH0802A3: I2C interface (RW1063 IC)
DRAWING
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description |
|---|---|---|
| 1 | VSS | Ground |
| 2 | VDD | Power supply for logic |
| 3 | VO | Contrast Adjustment |
| 4 | RS | Data/ Instruction select signal |
| 5 | R/W | Read/Write select signal |
| 6 | E | Enable signal |
| 7~14 | DB0~DB7 | Data bus line |
| 15 | A | Power supply for B/L + |
| 16 | K | Power supply for B/L - |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 58.0 × 32.0 | mm |
| Viewing Area | 38.0 × 16.0 | mm |
| Mounting Hole | 53.0 × 27.0 | mm |
| Character Size | 2.96 × 5.56 | 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 | 4.35 | V |
Display Character Address Code
| Display Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|
| DD RAM Address | 00 | 01 | 07 | |||||
| DD RAM Address | 40 | 41 | 47 |
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