I2C 2004A 20x4 LCD Display Module with Blue Backlight for Arduino

This I2C 2004A LCD Display Module features the SPLC780 controller and a clear blue backlight, supporting 20 characters by 4 lines. Designed for Arduino and other microcontrollers, it uses an I2C interface for simplified wiring and easy integration.

Key Features:

• Display Size: 76.0mm x 26.0mm
• Dot Size: 0.55mm x 0.55mm
• Character Size: Approximately 29.5mm x 47.5mm
• Display Content: 20 characters x 4 lines
• Operating Voltage: 5V
• Operating Current: 2.0mA (excluding backlight)
• Operating Temperature: -10°C to +60°C
• Storage Temperature: -20°C to +70°C
• Controller: SPLC780
• Interface Mode: I2C (single-row serial interface)
• Backlight Color: Blue

Pin Description:

• Pin 1 (VSS): Ground
• Pin 2 (VDD): 5V Power Supply
• Pin 3 (VO): Contrast adjustment terminal; connect to a 10k potentiometer for contrast tuning
• Pin 4 (RS): Register select (high for data register, low for instruction register)
• Pin 5 (R/W): Read/Write control (high for read, low for write)
• Pin 6 (E): Enable pin; triggers command execution on high-to-low transition
• Pins 7-14 (D0-D7): 8-bit bidirectional data lines (can be set to 4-bit or 8-bit mode)
• Pin 15 (BLA): Backlight power supply positive
• Pin 16 (BLK): Backlight power supply negative

Note:
Ensure correct wiring to avoid damage from reversed polarity.