Model No. WH4004A
►Módulo lcd de caractere 40x4
►5x8 pontos inclui cursor
►Controlador (ST7066 ou equivalente) integrado
►Alimentação +5V (também disponível para +3V)
►Tensão negativa opcional para fonte de alimentação +3V
►1/16 duty cycle
►Interface: 6800
►LED pode ser controlado pelos PIN1, PIN2, PIN15, PIN16 ou A e K
DRAWING
SPECIFICATIONS
Interface Pin Function
| Pin No. | Symbol | Description |
|---|---|---|
| 1~8 | DB7~DB0 | Data bus line |
| 9 | E1 | Enable signal |
| 10 | R/W | Read/Write select signal |
| 11 | RS | Data/ Instruction select signal |
| 12 | VO | Contrast Adjustment |
| 13 | VSS | Ground |
| 14 | VDD | Power supply for logic |
| 15 | E2 | Enable signal |
| 16 | NC | No connection |
| 17 | A | Power supply for B/L + |
| 18 | K | Power supply for B/L - |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 190.0 × 54.0 | mm |
| Viewing Area | 147.0 × 29.5 | mm |
| Mounting Hole | 183.0 × 47.0 | mm |
| Character Size | 2.78 × 4.89 | mm |
Electrical Characteristics
| Item | Symbol | Standard Value typ. |
Unit |
|---|---|---|---|
| Input Voltage | VDD | 3/5 | V |
| Recmmended 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 | 9 | 10 | 11 | 12 | --- | --- | --- | 40 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DD RAM Address | 00 | 1 | 27 | Lin1 | |||||||||||||
| DD RAM Address | 40 | 41 | 67 | Lin2 | |||||||||||||
| DD RAM Address | 00 | 01 | 27 | Lin3 | |||||||||||||
| DD RAM Address | 40 | 41 | 67 | Lin4 |
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