In recent years, with the continuous development of the DIY PC, esports desktop, and high-performance workstation markets, users have been constantly pursuing greater device personalization and intelligence. Water-cooled secondary screens have gradually become a standard feature of high-end PCs, serving not only a cooling function but also evolving into an intelligent interactive window for real-time monitoring and personalized display.

Through an embedded display, water-cooled secondary screens present real-time operating status of the CPU, GPU, memory, hard disk, and other hardware components. They also support rich display effects such as dynamic wallpapers, video playback, and personalized themes, providing users with a more intuitive and intelligent experience.

To address the water-cooled secondary screen application requirements for high-definition display, high-speed transmission, fast response, and low-cost development, Megahunt has launched a water-cooled secondary screen reference solution based on the MH2435 series MCU, helping customers rapidly build high-performance, high-reliability smart display products.

Solution Introduction

The Megahunt water-cooled secondary screen reference solution adopts the MH2435 series MCU as its main controller. It connects to the PC motherboard via high-speed USB, supports USB HID and USB CDC communication protocols, and can receive JPEG images as well as real-time operating information of the CPU, GPU, memory, and hard disk sent from the PC.

The received data is output to the LCD display after JPEG hardware decoding, enabling smooth presentation of PC status information, images, and dynamic content, and providing stable and efficient data interaction capabilities for water-cooled secondary screen applications.

Multi-dimensional Advantages: Creating a Smooth Display Experience

Addressing the display performance and user experience requirements of water-cooled screen applications, this solution offers the following core advantages:

• Supports high-speed USB interface to meet video streaming and high-speed data transmission needs, enabling stable communication between the PC and the display terminal;
• Supports JPEG decoder and 2D graphics acceleration, enabling smooth MJPEG video playback and improving image processing efficiency and display experience;
• Minimal peripheral design with optimized BOM cost, effectively shortening the product development cycle;
• Power-on startup time of less than 100ms, quickly entering the display state after boot to reduce waiting time;
• Supports QSPI and RGB LCD to meet the design requirements of different display sizes and resolutions;
• Supports firmware code encryption and anti-tamper design, effectively ensuring system security.

Core Chip of the Solution: MH2435 Series MCU (QFN88 Package)

High-performance processing capability: Typical operating frequency of 240MHz, with hardware floating-point unit (FPU) + DSP digital signal processing, supporting single-cycle multiplication and hardware division to meet complex data processing requirements;

Large-capacity memory configuration: Supports 1.25MB/9.25MB RAM, could meet multi-tasking and complex application requirements;

Rich peripheral interfaces: Integrates U(S)ARTx6, I2Cx3, I2Sx2, SPIx5, CANx2, USB full-speed OTG, USB high-speed OTG, and other interfaces, facilitating connection to displays, cameras, and various peripherals;

Powerful image processing capability: Supports JPEG decoder and DMA2D accelerator, recommended for mainstream resolution display scenarios such as 800x480 and 480x480;

Diverse display interfaces: Supports RGB display interface and MIPI CSI interface, providing flexible display expansion capabilities for smart display terminals.

The MH2435 series MCU is suitable not only for water-cooled secondary screens but also for a variety of graphic display scenarios such as smart display terminals, HMI, and consumer electronics, providing reliable support for customers to create smart display products that combine performance, cost-effectiveness, development efficiency.