DESCRIPTION

The 1.54-inch OLED display module presented here is a compact 128×64 dot matrix graphic display utilizing PMOLED technology and driven by the SSD1305 controller through an SPI interface. It supports monochrome emission in white, yellow, or blue, offers full viewing angles, and maintains stable performance across a wide temperature range from -40°C to 80°C. With a module size of 57.5 × 39.5 × 6.5 mm and an active area of 35.05 × 17.5 mm, it is designed for reliable integration into embedded systems requiring clear and efficient visual output.

Technical Architecture and Display Characteristics

PMOLED Technology Overview

The module adopts passive-matrix OLED (PMOLED) technology, which is well-suited for small- to medium-sized displays requiring moderate resolution and low power consumption. Each pixel emits light independently, ensuring high contrast and excellent readability without the need for backlighting.

Compared to traditional LCD solutions, this structure provides

Faster response time

Enhanced contrast performance

Simplified mechanical design

Resolution and Visual Output

With a resolution of 128×64 pixels, the display supports clear rendering of alphanumeric characters, symbols, and basic graphics. The pixel size of 0.254 × 0.254 mm ensures a balanced combination of sharpness and brightness uniformity.

Electrical Interface and Driver Integration

SSD1305 Controller Functionality

The SSD1305 driver IC is responsible for display memory management, signal timing, and pixel control. It enables efficient communication between the display and host microcontroller while minimizing system overhead.

SPI Communication Interface

The SPI interface provides a streamlined and reliable method for data transmission. Its advantages include reduced pin count and compatibility with a wide range of embedded platforms, making system integration straightforward and efficient.

Mechanical Dimensions and Layout

Structural Parameters

The module is engineered with a compact outline, making it suitable for space-constrained applications. The proportional relationship between the outer dimensions and the active display area ensures optimal utilization of available space.

GENERAL SPECIFICATION

DRAWING

INTERFACE PIN FUNCTION