Inside the BT820B: Building High-Resolution UIs with Ease

18 Mar 2026 – 

As embedded systems evolve, the demand for intuitive, high-resolution Human-Machine Interfaces (HMIs) continues to grow. From industrial automation to medical devices, users expect crisp visuals, responsive touch, and seamless interaction. Bridgetek’s BT820B Embedded Video Engine (EVE) is designed to meet these expectations, offering developers a streamlined path to modern graphical user interfaces.  It also offers a powerful upgrade path for developers looking to enhance the HMI in their products with higher‑resolution, larger displays.

A Leap Beyond Legacy Interfaces

Products with traditional HMIs often rely on complex embedded computer architectures (with separate controllers for graphics, touch, and audio). This increases design complexity, cost, and points of failure. The BT820B consolidates these functions into a single chip, enabling developers to build advanced UIs without the overhead of multiple components. It also provides a powerful solution for developers to update the HMI in their products to a higher resolution version with larger displays.

The BT820B enables developers to create large, dynamic, high-resolution UIs with ease

 

 

Key Advantages of the BT820B

• High-Resolution Support: Drives LVDS TFT displays up to 1920×1200 pixels, ensuring sharp and vibrant visuals.
• Integrated Touch Control: Supports capacitive and resistive touchscreens, delivering flexibility across applications.
• Audio Capability: Built-in audio output allows synchronized sound effects and alerts.
• Simplified Connectivity: Communicates with the existing or preferred host MCUs via SPI/QSPI, reducing wiring and integration effort.
• Optimized Memory Management: Support for storage via Flash and SD card with efficient handling of graphics assets for smooth animations and responsive interfaces allowing host MCUs with smaller Flash to be used.
• Video Input: Direct LVDS video input (up to 1920 x 1200 at 60fps) allows live video to be incorporated into HMIs with real-time pre-processing to apply effects and picture-in-picture.  Create intuitive HMIs by overlaying the video with indications and touch controls over the video.

 

Accelerating Development

The BT820B is fully compatible with Bridgetek’s ecosystem of development tools and reference designs. Bridgetek have a range of development modules (such as the VM820C and VM820B15A) and display panels for making it easy to evaluate the BT820B and develop applications. The MN820 mini module contains the BT820B IC and the DDR3 onboard, with a 100-pin board-to-board connector to attach to the main product PCB, enabling rapid integration into products.

VM820C module with onboard MN820 Mini-Module

 

Interfacing to the VM820C module

Developers benefit from:

• Pre-configured libraries and sample code
• Bridgetek’s free GUI design frameworks such as EVE Screen Editor or drag-and-drop interface creation
• Evaluation boards for rapid prototyping

This ecosystem shortens the learning curve, allowing functional prototypes to be built in days rather than weeks.

EVE Screen Designer (ESD)  A comprehensive development environment which enables users to build a GUI application using a visual programming method without needing to know any EVE-specific display list commands.	EVE Screen Editor (ESE)  A user-friendly graphical tool that enables users to create screen designs visually without the need for hardware.  Lay out your user interface easily and experiment to learn about different graphics techniques.	EVE Asset Builder (EAB) A Windows-based tool that contains a set of useful utilities to convert and generate resources for EVE series devices such as images, fonts, video, audio and animation.

 

Real-World Applications

The BT820B is already powering next-generation HMIs in:

• Medical equipment: Patient monitors, diagnostic devices
• Industrial systems: Control panels, automation dashboards
• Consumer electronics: Smart appliances, fitness equipment
• Automotive: Infotainment and instrument clusters

Conclusion

The BT820B Embedded Video Engine represents a significant step forward in HMI design. By combining high-resolution graphics, touch, and audio into one chip, it empowers developers to deliver modern, user-friendly interfaces with minimal complexity. For companies upgrading from legacy HMIs, the BT820B offers a cost-effective, scalable, and future-proof solution.

Get in touch at marketing@brtchip.com to find out more about the Bridgetek BT820B Embedded Video Engine

It’s Easy with EVE!