Introduction
In the world of compact embedded displays, interface flexibility can make or break a design. The SFOS066JY-7399AN from Saef Technology Limited is a 0.66-inch OLED module that supports multiple communication protocols—SPI, I2C, and 8-bit parallel—making it an excellent fit for a wide range of microcontrollers and applications.
Key Specifications
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Display Size: 0.66 inches
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Resolution: 64 × 48 pixels
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Pixel Pitch: 0.21 × 0.21 mm
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Interfaces: 4-wire SPI, I2C, 68XX/80XX parallel
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Brightness: 100 cd/m² (min), 120 cd/m² (typical with internal DC/DC)
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Contrast Ratio: 2000:1
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Operating Temperature: -40°C to +85°C
Multi-Interface Support
The module’s BS1 pin allows easy selection between:
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4-wire SPI for minimal pin count
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I2C for simple two-wire communication
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8-bit parallel for high-speed data transfer
This flexibility enables seamless integration with popular MCUs like STM32, ESP32, and nRF series, as well as legacy systems.
Optical Performance
With a typical brightness of 120 cd/m² and a high contrast ratio of 2000:1, the display delivers sharp monochrome visuals with wide viewing angles. Its self-emissive OLED technology ensures fast response times and consistent performance across temperatures.
Power Management
The module supports both external VCC (7.0V–8.0V) and internal DC/DC charge pump configurations (VBAT: 3.5V–4.2V). In sleep mode, power consumption drops to just 1µA (VDD) and 2µA (VCC), ideal for always-on or battery-powered devices.
Reliability Under Harsh Conditions
The SFOS066JY-7400AN has been tested under demanding environmental conditions, including:
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High-temperature operation (70°C for 240 hours)
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Thermal shock cycling (-40°C ↔ 85°C)
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High humidity (60°C, 90% RH for 120 hours)
These tests ensure reliable performance in industrial, medical, and outdoor applications.
Conclusion
Whether you're designing a wearable device, a handheld instrument, or an industrial HMI, the SFOS066JY-7399AN offers the interface flexibility, optical clarity, and ruggedness needed to succeed.
To learn more or request a sample, visit Saef Technology Limited at www.saefdisplay.com.
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