ATMXT1067TD-ABRSPIVAO

Overview

The ATMXT1067TD-ABRSPIVAO is a maXTouch Adaptive Sensing touchscreen controller designed for automotive applications. It supports up to 1066 X/Y nodes and tracks up to 16 concurrent touches with a typical report rate of ≥85 Hz. The device operates on a nominal 3.3 V supply, features an SPI slave interface (up to 8 MHz), and includes an internal voltage pump generating 6.6 V for the X line drive. Packaged in a 128-lead TQFP (14 × 14 × 1 mm), it functions within an operating temperature range of –40°C to +105°C.

Feature Summary

• AEC-Q100 qualified and developed using Automotive SPICE Level 3 certified processes.
• Supports mutual and self capacitance measurements with moisture/water compensation.
• Includes noise suppression technology compliant with CISPR 25 standards.
• Features lens bending algorithms and palm recovery for enhanced touch accuracy.

Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• Digital power plug-in modules

Procurement Notes

Verify that the specific ordering suffix matches the required tape and reel packaging option. Confirm the Grade 2 temperature rating (-40°C to +105°C) aligns with system thermal requirements. Ensure the SPI communication interface is compatible with the host processor before finalizing procurement.

Selection Notes

Select this model when an extended temperature range up to +105°C is necessary for automotive environments. The 'R' suffix indicates tape and reel packaging, suitable for automated surface-mount assembly. Verify that the 128-lead TQFP package dimensions fit the PCB layout constraints.

Part Context

This component belongs to the mXT1067TD-Ax SPI Variant family from Microchip Technology. It utilizes a charge-transfer acquisition engine for capacitive sensing. The AB designation specifically denotes the Grade 2 temperature classification, distinguishing it from the AT variant which covers the -40°C to +85°C range.

Replacement Considerations

The ATMXT1067TD-ATSPIVAO serves as a direct functional substitute if the application does not require operation above +85°C. Both variants share identical pinouts, firmware, and electrical characteristics outside of the temperature specification limits.

FAQ

What is the maximum number of concurrent touches supported?

The controller can track up to 16 concurrent touches in real time.

How is the high voltage for the transmit lines generated?

An internal voltage pump generates 6.6 V for the X line drive (XVdd). Alternatively, XVdd can be connected directly to Vdd if the pump is not used.

Does the device support water or condensation interference?

Yes, it includes moisture/water compensation capable of preventing false touches from condensation or water drops up to 22 mm in diameter.