Winstar New WH2004AR-TFH-JT# ST7066 IIC/SPI 204 2004 20*4 20x4 Character UART LCD Display Module 5V Screen
SPECIFICATIONS
Backlight: LED
Brand Name: simair
Controller: ST7066
Display Color: Yellow-green/Blue/Gray
Display Mode: 1000:1
Drive method: 1/16
High-concerned chemical: none
Interface: Parallel
Model Number: WH2004AR-TFH-JT#
Origin: Mainland China
Power Supply: 5V
Resolution: 20*4,20 characters x 4 Lines
Structure: COB
Type: Character,Character LCD
is_customized: Yes
Purchase Instructions:
Dear customers, welcome to Our shop ! Hope you have a good business trip in our store!
1. Please select the model you need. If you have any questions, please contact us.
2. The product can provide detailed development data and technical support. Please contact us !
3. For repair and replacement, if you are not familiar with LCD, pls.contact us first !
4. If you have any questions about freight and price, please contact us.
5. Pls.choose the right shipment .According to experience, we suggest to choose Aliexpress Standard shipping .
6 We are factory . We support customized products if you have big quantity .
7. If you have any questions, please contact us first. Thanks for your cooperation!

1.Specification parameters
Model No. WH2004AR
►Character LCD 20x4
►20 Characters x 4 Lines
►5x8 dots includes cursor
►IC:ST7066
►+5V power supply
►1/16 duty cycle
►Interface: UART
Description
The WH2004AR Series is a 20x4 (20 Characters x 4 Lines) LCD display module designed with convenience and versatility in mind. Sharing identical dimensions with the WH2004A series (default 16-pin 6800 interface), including PCB size, LCD dimensions, and frame size, this module offers seamless compatibility with existing setups while providing enhanced functionality.
Measuring at 98x60 mm in module dimensions, the WH2004AR Series features an active area of 70.4x20.8 mm. Equipped with the ST7066U controller IC, this module supports a default UART interface, with the option for SPI/I2C interface via jumper configuration. The WH2004AR series offers a brand new instruction set, eliminating the need to understand the ST7066U LCD Controller commands. Setting up the display is made effortless through the built-in MCU and instruction set, allowing users to focus solely on application layer programming. Additionally, users can easily adjust backlight brightness and LCD contrast using commands listed in the instruction set.
Designed with ease of integration in mind, the module comes with a PCB board and frame, featuring four screw holes on the PCB for secure attachment to various applications. The supply voltage for logic ranges from 4.5V to 5.5V, with typical values at 5V, ensuring stable and reliable performance. Additionally, it boasts an operating temperature range from -20 to +70℃, while the storage temperature spans from -30 to +80℃, making it suitable for deployment in diverse environmental conditions.
Whether for industrial control panels, consumer electronics, or any other application requiring a compact and reliable display solution, the WH2004AR Series offers unparalleled performance and flexibility, making it the ideal choice for your next project.
DRAWING

Data source: WH2004AR-TFH-JT#
SPECIFICATIONS
Interface Pin Function
Pin No. |
Symbol |
Description |
1 |
RX |
UART: serial data input (full duplex communication) |
2 |
VSS |
Ground |
3 |
VDD |
Supply Voltage |
4 |
TX |
UART: serial data output |
5 |
CS |
SPI: chip select |
6 |
SDO |
SPI: serial data output |
7 |
SCK/SCL |
SPI: serial clock |
8 |
SDI/SDA |
SPI: serial data input |
9 |
VSS |
Ground |
10 |
VDD |
Supply Voltage |
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 |
|
Controller IC |
ST7066 |
|
Interface |
UART |
|
Absolute Maximum Ratings
Item |
Symbol |
Min |
Typ |
Max |
Unit |
Operating Temperature |
TOP |
-20 |
- |
+70 |
℃ |
Storage Temperature |
TST |
-30 |
- |
+80 |
℃ |
Supply Voltage |
- |
VSS-0.3 |
- |
6.0 |
V |
EEPROM Cell Endurance |
- |
100K |
- |
- |
E/W |
Input Voltage |
- |
VSS-0.3 |
- |
VDD+0.3 |
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-VO |
Ta=25℃ |
3.75 |
4.05 |
4.35 |
V |
Input High Voltage |
VIH |
- |
3.5 |
- |
5.0 |
V |
Input Low Voltage |
VIL |
- |
0 |
- |
1.5 |
V |
Supply Current (Module + Backlight) |
IDD |
VDD=5.0V |
- |
- |
65 |
mA |
4.Photo Display





A: Some products are in stock, Small batch production for 1-2 weeks,Mass production for 3-4 weeks.
Q: How long is the product warranty and service?
A: The product is valid for 1 year and is a lifetime technical support service.
Q: Can you customize the product? How can I get the samples?
A: We can customize as needed, and the quantity has a minimum order quantity requirement.
A: We can provide drawings and procedures for customers to confirm.
Q: Can the LCD module be Export directly?
A: The products are through the relevant certification, it can be exported.
Q: Are you manufactory or trade company?
A:We are professional manufactory, which specializes in TN, HTN, FSTN, STN monochrome LCD, LED backlights, LCD modules more than 10 years.
Q: How do you manage product quality?
A: The products are baked, aging, electrical measurement and other procedures for testing.
- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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