LCD Character Module 20x4
Model No. WH2004B
►Character LCD 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)
►WH2004B : FFC connector
►WH2004F : 7 colors LED option
Description
WH2004B is a 20x4 Character LCD display module which is built in with ST7066 controller IC; its default interface is 6800 4/8-bit parallel, +5V power supply. This type of module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WH2004B is available in several different backlight colors including blue, green, yellow-green, amber, red and white LEDs. The LEDs can be driven by pin 1, pin 2, or pin 15 pin 16 or A/K. The WH2004B have the same outline dimension and VA size, AA size as WH2004A but with different pin out. WH2004A is having 16-pin hole on PCB, as to the WH2004B is having a FFC connector.
There are different interface options for WH2004B series, details as below:
►WH2004B : 6800 interface (ST7066 IC)
►WH2004B1 : SPI interface (RW1063 IC)
►WH2004B2 : I2C interface (RW1063 IC)
There are different interface options for WH2004B series, details as below:
►WH2004B : 6800 interface (ST7066 IC)
►WH2004B1 : SPI interface (RW1063 IC)
►WH2004B2 : I2C interface (RW1063 IC)
DRAWING
Data source ref:WH2004B-TFH-ET#
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 | 98.0 x 60.0 x 13.6 (MAX) | mm |
View area | 77.0 x 25.2 | mm |
Active area | 70.4 x 20.8 | mm |
Dot size | 0.55 x 0.55 | mm |
Dot pitch | 0.60 x 0.60 | mm |
Character size | 2.95 x 4.75 | mm |
Character pitch | 3.55 x 5.35 | 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 3.5 |
- 4.5 - |
5.7 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 | 1.2 | 1.6 | 2.0 | mA |
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