ATMXT1296M1T-ARVA2

Overview

The ATMXT1296M1T-ARVA2 is an automotive-grade touchscreen controller from the maXTouch M1 family, designed for multi-finger thick glove detection on various overlays including on-cell OLED. It features up to 72 reconfigurable touch channels supporting configurations up to 48 X × 60 Y lines (1296 nodes). The device supports Smart Mutual capacitance measurements, improving signal-to-noise ratio by up to +15 dB. It operates within a temperature range of –40°C to +105°C and utilizes a 128-lead TQFP package with I2C or SPI primary communication interfaces.

Feature Summary

• Supports Smart Mutual acquisition method for improved signal-to-noise ratio
• Enables Knob-on-Display technology for capacitive mechanical rotary encoder integration
• Provides automated PWM output for low latency haptics and display backlight control
• Includes ISO26262 ASIL-B readiness and AEC-Q100 automotive qualification

Applications

• Automotive infotainment systems requiring thick glove operation
• On-cell OLED and LCD display integration
• Applications utilizing Microchip/Panasonic Magic Knob technology
• Systems requiring real-time multi-touch tracking with gesture support

Procurement Notes

Verify the specific variant requirements against the Feature Summary table in the product brief. Confirm that the single interface configuration of the 'T' variant meets system connectivity needs, as it lacks the secondary host interface found in 'E' variants. Ensure firmware version 2.0.AB compatibility is established for the ARVA2 suffix.

Selection Notes

Select this model when a single communication interface is sufficient for the host application. Choose the 'T' variant over the 'E' variant if device encryption and secondary interfaces are not required. Verify that the 72 sense line count accommodates the desired screen size and aspect ratio, such as 11.29 inches at a 16:10 ratio with 5.5 mm pitch.

Part Context

This component belongs to the ATMXT1296M1 Family, which expands Microchip's maXTouch M1 series. The family includes variants like ATMXT1296M1E and ATMXT1296M1E-AMK, differing primarily in interface count, security features, and specific HMI capabilities like Knob-on-Display or Magic Knob support.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Previous versions such as ATMXT1296M1T-ATVA1 are noted as legacy and not recommended for new designs.