AVDD

How is the Maximum VDD of 4V Determined for MCUs?

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By examining the absolute maximum ratings table of current mainstream MCU manufacturers, we find that VDD is limited to 4.0V: Parameter STM32 (F1/F4) GD32 (F1/F3) National Technology (N32G/N32L) VDD / VDDIO -0.3V to +4.0V -0.3V to +4.0V -0.3V to +4.0V Why is this the case? Here are several core factors that determine this voltage value, … Read more

Design Recommendations for AVDD, VCOM, VGH, and VGL in Digital Screens

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Design Recommendations for AVDD, VCOM, VGH, and VGL in Digital Screens

As a manufacturer specializing in display technology R&D, CNK Electronics understands that for digital screens requiring external key voltages such as AVDD, VCOM, VGH, and VGL, refined and forward-thinking circuit design is essential to avoid display defects and ensure long-term product reliability. In the application design of customized LCD screens, power management is the core … Read more