Model No. WH2004L
►Módulo lcd de caractere 20x4
►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
►LED pode ser controlado pelos PIN1, PIN2, PIN15, PIN16 ou A e K
►Interface : 6800, opção SPI/I2C (RW1063 IC)
DESCRIPTION
►WH2004L : 6800 interface (ST7066 IC)
►WH2004L1 : SPI interface (RW1063 IC)
►WH2004L2 : I2C interface (RW1063 IC)
►WH2004L1 : SPI interface (RW1063 IC)
►WH2004L2 : 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 - |
| 17 | NC | No connection |
| 18 | NC | No connection |
Mechanical Data
| Item | Standard Value | Unit |
|---|---|---|
| Module Dimension | 146.0 × 62.5 | mm |
| Viewing Area | 123.5 × 43.0 | mm |
| Mounting Hole | 139.0 × 55.5 | mm |
| Character Size | 4.84 × 9.22 | 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 | 4.20 | V |
Display Character Address Code
| Display Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | --- | --- | 20 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DD RAM Address | 00 | 01 | 13 | |||||||||||||
| DD RAM Address | 40 | 41 | 53 |
| DD RAM Address | 14 | 15 | 27 | |||||||||||||
| DD RAM Address | 54 | 55 | 67 |
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