Product Overview
This ultra-slim 0.91-inch passive matrix OLED display module delivers crisp, high-contrast monochrome imagery with higher resolution in an extremely thin form factor. Engineered with the reliable SSD1306 controller and a high-speed 4-wire SPI interface, this display solution offers excellent readability, wide viewing angles, and fast data transfer for space-constrained applications.
The module features a 128 x 32 dot matrix resolution with individual pixel control, providing clear and sharp graphics for small-form-factor devices. The 4-wire SPI interface enables high-speed communication with minimal I/O pins, making it ideal for applications requiring frequent display updates. With an ultra-thin profile of just 1.26mm and compact 30.0 x 11.5mm footprint, this display is perfect for wearable technology, portable instruments, industrial control interfaces, and miniature user interfaces.
Key Features
- Ultra-Slim Form Factor – 30.0 x 11.5 x 1.26 mm module size for space-constrained designs
- High Resolution – 128 x 32 dot matrix for sharp, detailed graphics
- High-Speed 4-Wire SPI Interface – Fast data transfer with minimal I/O pin usage
- High Contrast OLED Technology – Self-emissive pixels for excellent visibility in all lighting conditions
- Wide Operating Temperature – -40°C to +80°C for demanding environments
- Low Power Consumption – Maximum 11mA (external VCC) or 25mA (internal DC/DC), ideal for portable devices
- Built-in SSD1306 Controller – Integrated driver with charge pump for display voltage generation
- Monochrome Display – High-contrast single-color output for clear readability
- 1/32 Duty Drive – Efficient multiplexing for consistent brightness
- Flexible Power Options – Supports external VCC or internal charge pump for display voltage
Technical Specifications
Display Characteristics
| Parameter | Specification |
|---|
| Screen Size | 0.91-inch diagonal |
| Dot Matrix | 128 x 32 Dots |
| Active Area | 22.384 (H) x 5.584 (V) mm |
| Pixel Size | 0.152 x 0.152 mm |
| Pixel Pitch | 0.175 x 0.175 mm |
| Display Mode | Passive Matrix |
| Display Color | Monochrome |
| Drive Duty | 1/32 Duty |
| Controller IC | SSD1306 |
| Interface | 4-Wire SPI |
Mechanical Specifications
| Parameter | Dimension |
|---|
| Module Dimension | 30.0 x 11.5 x 1.26 mm |
| Active Area | 22.384 x 5.584 mm |
| Pixel Size | 0.152 x 0.152 mm |
| Pixel Pitch | 0.175 x 0.175 mm |
Key Pin Functions
| Pin | Symbol | Function |
|---|
| 5 | VBAT | Charge Pump Regulator Supply |
| 6 | VSS | Ground |
| 7 | VDD | Logic Power Supply |
| 8 | CS# | Chip Select (Active Low) |
| 9 | RES# | Reset Input (Active Low) |
| 10 | D/C# | Data/Command Control |
| 11 | SCLK | Serial Clock Input (SPI) |
| 12 | SDIN | Serial Data Input (SPI) |
| 13 | IREF | Current Reference (≤30µA) |
| 15 | VCC | Panel Drive Voltage Supply |
Electrical Characteristics (DC)
| Parameter | Min. | Typ. | Max. | Unit |
|---|
| Logic Supply Voltage (VDD) | 2.8 | 3.0 | 3.3 | V |
| Display Supply (External VCC) | 7.0 | 7.25 | 8.0 | V |
| Charge Pump Supply (VBAT) | 3.0 | – | 4.2 | V |
| Charge Pump Output (VCC) | 7.0 | 7.5 | – | V |
| Input High Voltage (VIH) | 0.8×VDD | – | VDD | V |
| Input Low Voltage (VIL) | 0 | – | 0.2×VDD | V |
| Operating Current (VCC External) | – | – | 11 | mA |
| Display 50% Pixel ON (Internal DC/DC) | – | 15 | 25 | mA |
Absolute Maximum Ratings
| Parameter | Min. | Max. | Unit |
|---|
| Logic Supply Voltage | 0 | 4.0 | V |
| Display Supply Voltage | 0 | 16.0 | V |
| Operating Temperature | -40 | +80 | °C |
| Storage Temperature | -40 | +85 | °C |
Applications
- Wearable Devices and Smart Watches
- Industrial Control Interfaces and HMIs
- Portable Medical Instruments
- Smart Home and IoT Displays
- Handheld Test and Measurement Equipment
- Consumer Electronics Accessories
- Miniature User Interface Panels
- Audio Equipment Displays
Key Advantages
- High-Speed SPI Interface – 4-wire SPI enables fast data transfer for dynamic display content
- Higher Resolution – 128 x 32 pixels provide sharper, more detailed graphics than lower-resolution alternatives
- Extremely Compact – 30.0 x 11.5 x 1.26 mm fits into the tightest spaces
- Wide Temperature Range – Reliable operation from -40°C to +80°C for harsh environments
- High Contrast – OLED technology provides excellent readability without backlight
- Low Power – Maximum 11mA (external VCC) or 25mA (internal DC/DC) current consumption
- Versatile Compatibility – 4-wire SPI interface compatible with most microcontrollers
- Flexible Power Options – Supports external VCC or internal charge pump for display voltage
Ordering Information
- Display Module – 0.91″ OLED 128×32 4-Wire SPI Monochrome
- Interface – 4-Wire SPI (CS#, RES#, D/C#, SCLK, SDIN)
- Controller – SSD1306 with integrated charge pump
For volume pricing, customization, or engineering support, please contact our sales team.
