DESCRIPTION

The 1.54 inch OLED display module described here is a compact monochrome graphic display featuring a 128×64 dot matrix, supporting both SPI and I²C interfaces. Built on a passive matrix architecture and driven by controllers such as SSD1305, SSD1309, or D0301, it offers wide viewing angles, stable performance across a broad temperature range, and a balanced combination of mechanical compactness and visual clarity, making it suitable for embedded and industrial display applications.

Structural and Optical Characteristics

At the core of this module lies a passive matrix OLED panel, optimized for low power consumption and simplified driving schemes. The 128×64 resolution ensures sufficient detail for graphical icons, text, and simple UI rendering, while maintaining efficient resource utilization in microcontroller-based systems.

The display area is carefully proportioned: a view area of 37.052 × 19.516 mm and an effective area of 35.052 × 17.516 mm provide a clean and readable interface. With a pixel size of 0.254 × 0.254 mm and a pitch of 0.274 mm, the module achieves a balanced visual density that avoids both overcrowding and coarse rendering.

From an optical standpoint, the module supports monochrome emission in white, blue, or yellow variants. Combined with an inherently high contrast ratio typical of OLED technology, the display remains legible under varied ambient lighting conditions. The “all-direction” viewing characteristic ensures consistent readability without angular color distortion.

Electrical Interface and Driving Scheme

Interface Flexibility

The integration of both SPI and I²C communication interfaces provides notable design flexibility. SPI offers higher data throughput for dynamic content updates, while I²C reduces pin usage, making it suitable for compact systems with limited GPIO availability.

Driver IC Compatibility

The module supports multiple driver ICs, including SSD1305, SSD1309, and D0301. These controllers are widely adopted in embedded systems due to their stable driving capabilities and mature software ecosystem. The 1/64 duty driving scheme aligns with the resolution, ensuring uniform luminance distribution across the panel.

Mechanical Design and Environmental Reliability

The module is engineered with compact dimensions of 42.6 × 38.0 × 3.2 mm (maximum height), allowing straightforward integration into handheld or space-constrained devices. A 7-pin configuration simplifies electrical connection while maintaining essential functionality.

In terms of environmental adaptability, the module operates reliably within a temperature range of -40°C to 80°C, with storage tolerance extending to -40°C to 85°C. This robustness supports deployment in industrial control systems, outdoor instrumentation, and other demanding environments.

GENERAL SPECIFICATION

DRAWING

INTERFACE PIN FUNCTION