BT818Q-R

Overview

The BT818Q-R is a video IC from Bridgetek’s EVE series, designed for resistive touch applications. It operates on a single 3.3 V supply with a maximum current draw of 30 mA. The device supports SPI interface communication and functions within an operating temperature range of -40°C to +85°C. Packaged in a VQFN-64 form factor suitable for SMD/SMT mounting, it includes humidity sensitivity considerations. This component integrates display driving capabilities alongside touch processing for embedded systems requiring efficient graphical user interfaces.

Feature Summary

• Integrated EVE platform for resistive touch and display control
• Single-channel operation with SPI interface
• Wide operating temperature range (-40°C to +85°C)
• VQFN-64 surface mount package

Applications

• Industrial human-machine interfaces (HMI)
• Medical equipment displays
• Automotive instrument clusters
• Point-of-sale (POS) terminals

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging configuration as listed in distributor catalogs. Confirm RoHS compliance status through official Bridgetek documentation or certified datasheets before integration. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference Mouser part number 895-BT818Q-R for accurate sourcing channels.

Selection Notes

Select this model when a single-channel resistive touch solution is required alongside display generation. The VQFN-64 package suits space-constrained designs needing robust thermal performance up to 85°C. Compare against FT810Q-R if lower resolution (800x600) or different pin counts are acceptable. Ensure host microcontroller supports SPI communication for command data transfer.

Part Context

Part of the BT817/8 series from Bridgetek, the BT818Q-R belongs to the EVE family of intelligent graphics processors. These chips combine display controller and touch processor functions into a single silicon die, reducing system complexity compared to discrete solutions. The Q variant typically denotes specific package or speed grade variations within the EVE lineup.

Replacement Considerations

Direct substitutes may include other EVE series chips like BT816 or BT817 depending on memory and pin compatibility requirements. Verify electrical parameters such as supply voltage and interface types match exactly. No alternative part numbers are explicitly confirmed as drop-in replacements in available public documentation.