Character Display LCD Modules 20x4
Model No. WH2004D
►Character LCD Module 20x4
►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
WH2004D series are 20x4 character display modules which are built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel. The LCD module 20x4 displays are also available in SPI and I2C interface by using RW1063 controller IC. WH2004D is available in several different backlight colors including blue, green, white, yellow-green, amber, red and white LEDs. There are different character fonts/texts available for ST7066 IC including English/Japanese, English/West European, English/Scandinavian European, or English/Cyrillic (Russian) as options.
There are different interface options for WH2004D series, details as below:
►WH2004D : 6800 interface (ST7066 IC)
►WH2004D1 : SPI interface (RW1063 IC)
►WH2004D2 : I2C interface (RW1063 IC)
There are different interface options for WH2004D series, details as below:
►WH2004D : 6800 interface (ST7066 IC)
►WH2004D1 : SPI interface (RW1063 IC)
►WH2004D2 : I2C interface (RW1063 IC)
DRAWING
SPECIFICATIONS
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 + |
16 | K | - | Power supply for B/L - |
Mechanical Data
Item | Dimension | Unit |
---|---|---|
Number of Characters | 20 Characters x 4 Lines | - |
Module dimension | 77.0 x 47.0 x 12.4 (MAX) | mm |
View area | 60.0 x 22.0 | mm |
Active area | 55.1 x 17.56 | mm |
Dot size | 0.46 x 0.42 | mm |
Dot pitch | 0.51 x 0.47 | mm |
Character size | 4.03 x 2.30 | mm |
Character pitch | 4.51 x 2.78 | mm |
Duty | 1/16 | |
Backlight Type | LED | |
IC | ST7066U | |
Interface | 6800 |
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℃ |
- 4.4 3.8 |
- 4.5 - |
5.3 4.6 - |
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 | 1.0 | 1.2 | 1.5 | mA |
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