Description
Product Overview
The 2.42-inch Passive Matrix OLED Display Module is a large-format, high-contrast monochrome graphic display designed for embedded systems, industrial control panels, medical devices, and IoT applications . Powered by the SSD1309 driver IC and featuring a crisp 128×64 pixel resolution, this display delivers bright yellow text, detailed graphics, and custom icons on a true black background — all in a spacious 2.42-inch diagonal format (approximately 61.5mm diagonal) .
Why the SSD1309 Controller?
Unlike the common SSD1306 controller used on smaller 0.96″ and 1.3″ OLEDs, the SSD1309 is specifically designed for larger OLED panels. Key advantages include:
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Higher row drive current: Provides brighter and more uniform illumination across the larger screen area
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External boost regulator: Uses an external switching boost converter to generate the higher voltage (approx. 13V) needed for larger OLED panels
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10,000:1 contrast ratio: Exceptional clarity with true blacks
The 5-pin I2C interface (GND, VCC, SCL, SDA, RES) requires only two data lines to connect to your microcontroller, preserving valuable I/O pins for other peripherals. A dedicated RES (reset) pin allows hardware initialization of the display for reliable startup and recovery .
This module is compatible with ESP32, ESP8266, STM32, Raspberry Pi, and other 3.3V/5V logic systems. The I2C lines are 5V tolerant, making it safe for direct connection to 5V Arduino boards.
Key Features
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Large 2.42-Inch Active Area: 55.01 × 27.49mm display area — approximately 6 times larger than 0.96″ OLEDs, providing significantly more screen real estate for dashboards, data visualization, and UI elements
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Yellow Monochrome OLED: Bright yellow pixels on true black background provide exceptional contrast (10,000:1) and a warm, distinctive appearance
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SSD1309 Driver IC: Advanced controller specifically designed for larger OLED panels, featuring higher row drive current for superior brightness uniformity, 128 × 64-bit SRAM buffer, and 256-step contrast control
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5-Pin I2C Interface: Pins GND, VCC, SCL, SDA, RES — requires only 2 data lines (SDA/SCL) with default address 0x3C, saving GPIO pins
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Dedicated RESET Pin: Allows external hardware reset control for reliable display initialization and recovery
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Wide Operating Temperature: Rated for -40°C to +80°C, suitable for industrial and outdoor applications
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Ultra-Thin & Lightweight: COG (Chip-on-Glass) construction with 2.15mm thickness, ideal for portable devices
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Full Viewing Angle: >160° visibility ensures clear readouts from any angle without contrast shift
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Display Type | Passive Matrix OLED (PMOLED) |
| Driver IC | SSD1309 |
| Resolution | 128 × 64 pixels |
| Display Color | Yellow |
| Contrast Ratio | 10,000:1 |
| Active Area (W × H) | 55.01 × 27.49 mm |
| Module Dimensions (W × H) | 60.5 × 37.0 × 2.15 mm |
| Pixel Pitch (W × H) | 0.43 × 0.43 mm |
| Default I2C Address | 0x3C (configurable to 0x3D) |
| Logic Supply Voltage (VDD) | 2.8 – 3.3V DC (3.0V typical) |
| Logic I/O Compatibility | 3.3V logic, 5V tolerant for I2C lines |
| Operating Temperature | -40°C to +80°C |
| Storage Temperature | -40°C to +85°C |
| Interface | I2C (5-pin: GND, VCC, SCL, SDA, RES) |
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