Unternehmensnachrichten über Precision Power Sequencing for Stable OLED Performance: The SFOS150YZ-128128WB-01 Advantage

For design engineers in the U.S. and Germany working on high-reliability embedded systems, proper power sequencing is not just a recommendation—it’s a critical design requirement. The SFOS150YZ-128128WB-01 OLED display from Saef Technology Limited delivers superior visual performance, but its stability hinges on adhering to a precise power-up and power-down sequence as defined in the module’s specification.

Unlike simpler displays, this 128x128 monochrome OLED requires a multi-step initialization process to ensure internal voltage rails stabilize before display activation. The correct sequence begins with powering VCI (logic supply), waiting at least 1ms for the internal VDD to stabilize, then asserting the RES# pin low for ≥100µs before releasing it. Only after this reset phase should VCC (analog supply) be applied. Finally, once VCC is stable, the display is enabled by sending command AFh. This sequence prevents latch-up, ensures register reset integrity, and protects the driver IC—key concerns for engineers searching “OLED power sequence design” or “how to avoid OLED startup failure.”

The power-off sequence is equally important: first, send command AEh to disable the display, then power off VCC, wait at least 80ms (tOFF), and finally power off VCI. This ensures VCI is never turned off before VCC—a critical rule due to the ESD protection circuit between the two rails, which can cause unintended current flow if reversed.

At Saef Technology Limited, we emphasize these timing parameters because they directly impact long-term reliability. Deviations can lead to pixel corruption, reduced lifespan, or intermittent operation—issues that are difficult to debug in field-deployed systems.

Additionally, the module’s 1.5-inch active area and white emission provide excellent readability in medical devices, test equipment, and industrial HMIs. Its passive matrix architecture ensures fast response times and low latency, essential for dynamic interfaces.

By following the documented sequence, engineers can achieve consistent, glitch-free display initialization. For detailed timing charts and application notes, visit Saef Technology Limited’s engineering support portal.