BT815Q-T

Overview

The Bridgetek BT815Q-T is a video IC featuring the Advanced Embedded Video Engine (EVE) architecture, designed for high-resolution graphics and video playback. It supports capacitive touch screens with up to five touch points and integrates 1 MByte of graphics RAM. The device outputs RGB parallel video signals with configurable pixel clock speeds up to 72 MHz and supports display resolutions up to SVGA (800x600). Operating on a 3.3 V supply with a current draw of 22 mA, it functions within a temperature range of -40°C to +85°C. The component utilizes an SPI interface for host communication and is housed in a VQFN-64 package.

Feature Summary

• Advanced Embedded Video Engine (EVE) supporting Adaptive Scalable Texture Compression (ASTC) for efficient memory usage
• Integrated 1 MByte graphics RAM eliminating the need for external frame buffer memory
• Capacitive touch controller supporting up to 5 simultaneous touch points with hardware tag recognition
• Built-in mono audio channel output with Sigma-delta modulation and sound synthesizer capabilities

Applications

• Industrial Human-Machine Interfaces (HMI)
• Medical equipment displays
• Smart home control panels
• Point-of-sale (POS) terminals

Procurement Notes

Verify the specific suffix 'T' indicates tray packaging when sourcing components. Confirm RoHS compliance status through official Bridgetek documentation or authorized distributor datasheets prior to procurement. Ensure the selected variant matches the required voltage and interface specifications for the target embedded system design.

Selection Notes

Select the BT815Q-T for applications requiring integrated capacitive touch handling and high-resolution graphic rendering without external frame buffer memory. This model is suitable for designs needing support for up to 800x600 resolution displays. Consider the BT816 variant if resistive touch input is required instead of capacitive. Verify that the host microcontroller supports the necessary SPI interface speed and GPIO configuration for the VQFN-64 package.

Part Context

The BT815Q-T belongs to the Bridgetek BT81x series of Embedded Video Engines. This family integrates graphics processing, audio output, and touch control into a single chip, reducing system complexity. The 'Q' designation typically refers to the commercial temperature grade and VQFN packaging, while 'T' denotes the tray packaging format used for surface-mount assembly.

Replacement Considerations

The BT815Q-R serves as a functional alternative with identical electrical characteristics but differs in packaging format, utilizing reel packaging instead of trays. Designers must verify footprint compatibility and reflow soldering profiles when switching between tray and reel variants.