OLED02 Display with I2C interface

The OLED02A is a simplified variant of the MLAB OLED01 module. It features a 1.3-inch blue OLED display using the SSD1306BZ controller and communicates over an I²C interface.

Features

• Display: 1.3-inch passive matrix OLED with a resolution of 128x64 pixels.
• Color: Blue.
• Controller: SSD1306BZ.
• Interface: I²C.
• Power Supply:
  • Logic: 3.0 V typical (2.8 V min, 3.3 V max).
  • Display: Internally generated by integrated DC/DC converter.
• Address Configuration: Default I²C address is 0x3C, changeable to 0x3D via onboard jumper.
• Mounting:
  • Horizontal MLAB standard.
  • Optional vertical placement using a 3D-printed holder.

Electrical Characteristics

• Operating Voltage (Logic): 2.8 V to 3.3 V
• Operating Current: ~10 mA @ 12 V VCC (internally generated)
• Interface Voltage Levels: TTL-compatible (0 to 3.3 V)

Optical Characteristics

• Contrast Ratio: 2000:1
• Brightness: 60–80 cd/m² (typical with 50% checkboard)
• Viewing Angle: 160° (H and V)
• Response Time: 10 µs (rise and fall)
• Display Technology: Passive matrix
• Pixel Size: 0.148 mm x 0.148 mm
• Dot Pitch: 0.17 mm x 0.17 mm
• Active Area: 21.738 mm x 10.858 mm

Mechanical Parameters

• Board Dimensions: 40.14 mm x 40.14 mm
• Board Thickness: 1.6 mm
• Mounting: Compatible with standard MLAB module placement

I²C Pin Configuration (Standard MLAB I2C Layout)

Pin	Name	Description
1	GND	Ground
2	SDA	Serial Data
3	3V3	3.3V power supply
4	SCL	Serial Clock
5	GND	Ground

I²C Address Selection

The OLED02A module uses 0x3C as its default I²C address. By bridging the onboard address jumper, the address switches to 0x3D.

Notes

• OLED02A omits certain advanced features present in OLED01 to simplify integration and reduce cost.
• The module uses only the I²C interface; SPI and parallel interfaces supported by the SSD1306BZ are not routed.
• Ensure proper handling precautions for OLEDs to prevent damage or screen burn-in.
• Refer to the SSD1306 datasheet for command interface details.