BT815Q-R

Overview

The BT815Q-R is a Bridgetek EVE Advanced Embedded Video Engine graphic controller in a VQFN-64 package. It supports capacitive touch with up to 5 points and ASTC compression. The device integrates 1MB graphics RAM, an audio engine, and SPI NOR flash interface. It drives displays up to SVGA (800x600) via parallel RGB output at PCLK up to 72MHz. Host communication uses Quad SPI up to 30MHz. Operating voltage ranges from 1.8V to 3.3V for I/O, with a 3.3V core supply. It operates between -40°C and +85°C.

Feature Summary

• Capacitive touch support with up to 5-point detection and hardware tracking for 255 tags
• Integrated 1MB graphics RAM supporting Adaptive Scalable Texture Compression (ASTC)
• Parallel RGB video output configurable for resolutions up to 800x600 with PCLK up to 72MHz
• Quad SPI host interface operating up to 30MHz for single, dual, or quad channel modes

Applications

• Point of Sales Machines
• Multi-function Printers
• Instrumentation
• Home Security Systems
• Medical Appliances

Procurement Notes

Verify the 'R' suffix indicates Taped and Reel packaging containing 3000 pieces per reel. Confirm RoHS compliance and Pb-free status. Ensure ESD handling procedures are followed due to moisture sensitivity classification. Check for specific pinout compatibility with target PCB layout.

Selection Notes

Select this model for designs requiring capacitive multi-touch input rather than resistive. Ensure the host MCU supports Quad SPI for optimal bandwidth. Verify that the display panel matches the parallel RGB timing requirements. Consider external QSPI NOR flash capacity if large graphics assets are needed beyond internal RAM.

Part Context

This component belongs to the BT81X series, which includes the BT815 (capacitive touch) and BT816 (resistive touch). The BT815Q-R specifically denotes the capacitive variant packaged in a tape-and-reel format. It shares the same functional block diagram and pinout as other BT815 variants, differing primarily in packaging and touch sensor integration.

Replacement Considerations

The BT816Q-R serves as a direct pin-compatible alternative for applications requiring resistive touch instead of capacitive. Other FT8xx series devices may require schematic modifications due to different pinouts or feature sets.