What interfaces and resolutions does a 3.5-inch LCD display have?
Displays play a vital role in various devices. 3.5-inch LCD displays are widely used in many fields due to their small size, portability, and excellent display effects. So, what interfaces and resolutions do 3.5-inch LCD displays have? Let’s take a look together
1. Interface type
SPI interface: This is a common serial peripheral interface with the characteristics of simplicity and efficiency. 3.5-inch LCD displays with SPI interface are usually suitable for application scenarios with high cost and space requirements, such as small embedded systems, smart hardware, etc. Its transmission speed is relatively fast and can meet general display needs.
Interface: I2C (Inter-Integrated Circuit) interface is also a commonly used serial communication interface. It has two signal lines, namely the clock line and the data line, and the communication method is simple and easy to understand. When a 3.5-inch LCD display uses the I2C interface, it can be easily connected to the microcontroller to realize data transmission and control. This interface is suitable for low-power, miniaturized devices.
Parallel interface: Parallel interface usually has more data pins, which can achieve high-speed data transmission. For application scenarios that require high resolution and fast refresh, a 3.5-inch LCD screen with a parallel interface is a good choice. However, the parallel interface requires more pin resources, which may increase the complexity of PCB layout.
2. Resolution Introduction
QVGA (320×240): This is a common resolution and is suitable for many small devices. A 3.5-inch LCD screen with QVGA resolution can provide clear image and text display, which is sufficient for general picture browsing, video playback and simple game applications.
HVGA (480×320): Compared with QVGA, HVGA has a higher resolution and more delicate picture quality. This resolution of 3.5-inch LCD screen is widely used in some devices with high display quality requirements, such as high-end smartphones, tablets, etc.
Other resolutions: In addition to the two common resolutions mentioned above, 3.5-inch LCD screens may also have other different resolution options, such as 240×320, 640×480, etc. The choice of these resolutions depends on the specific application requirements and device performance requirements.
In short, there are many interface types and resolutions for 3.5-inch LCD monitors. When choosing, you need to consider the specific application scenario, equipment requirements, cost budget and other factors. Whether it is SPI, I2C or parallel interface, as well as different resolutions, they all have their own advantages and scope of application. I hope that through the introduction of this article, I can help you better understand the interface and resolution of 3.5-inch LCD monitors and choose the right monitor for your device.
