ATMXT2912TD-ABUWVAO

Overview

The ATMXT2912TD-ABUWVAO is an automotive-grade capacitive touchscreen controller from Microchip Technology, designed for wide-aspect-ratio displays. It operates within a temperature range of -40°C to +105°C and utilizes a charge-transfer acquisition engine with mutual and self-capacitance measurements. The device supports up to 16 concurrent touches and features AEC-Q100 qualification. It interfaces via I2C (up to 1 MHz) or SPI (up to 8 MHz) and is housed in a 176-lead LQFP package.

Feature Summary

• AEC-Q100 qualified and developed using Automotive SPICE Level 3 certified processes
• Supports up to 16 concurrent touches with initial latency under 20 ms
• Integrated noise suppression handling up to 240 Vpp ambient noise
• Includes lens bending algorithms and palm recovery for display integration

Applications

• Automotive infotainment systems requiring ASIL-B related FMEDA compliance
• Wide-aspect-ratio displays up to 34 inches with 7:1 aspect ratio
• On-cell and touch-on-display implementations including TFT, LCD, and OLED panels

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging type. The 'VAO' suffix indicates tray packaging, while 'RAO' denotes tape and reel. Confirm that the Grade 2 temperature rating (-40°C to +105°C) aligns with the target application environment requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring high reliability in automotive environments. Ensure the design accommodates the 176-lead LQFP footprint and provides appropriate power supplies: 3.3V nominal for digital/analog domains and up to 8.5V for the external X line drive. Validate sensor stack-up compatibility with Microchip or qualified partners for optimal performance.

Part Context

This part belongs to the mXT2912TD-AxUW family, which implements Microchip’s maXTouch Adaptive Sensing technology. The 'B' in the model number specifies the extended industrial/automotive temperature grade compared to the standard 'T' grade. It serves as a core sensing solution for complex multi-touch interfaces in demanding conditions.

Replacement Considerations

The ATMXT2912TD-ATUWVAO is a compatible alternative offering the same functionality but with a reduced operating temperature range of -40°C to +85°C. Verify thermal constraints before substituting.