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M1 Generation of maXTouch® Touchscreen Controllers

The M1 Generation of maXTouch® touchscreen controllers targets automotive and industrial applications and offers the latest innovations to help you design reliable, safe, visually stunning and user-friendly interfaces.

ATMXT1296M1

  • 72 reconfigurable touch channels
  • ASIL-B ready

ATMXT2496M1

  • 100 reconfigurable touch channels
  • ASIL-B compliant

ATMXT3072M1

  • 112 reconfigurable touch channels
  • Ultrawide mode
  • ASIL-B compliant

Overview of M1 Generation Devices

Fast and Easy Touch Channel Reconfiguration Via Soft Parameters

The M1 Generation of maXTouch touchscreen controllers enables sensor channel reconfiguration via soft parameters. The driving and receiving channels can be reconfigured to match the exact screen format, supporting screen sizes up to 20” in the 16:9 aspect ratio and 34” in the 7:1 aspect ratio. These parameter changes do not require any firmware modifications.

Boost Your Touch SNR with Smart Mutual Acquisition

In addition to the self and standard mutual capacitance acquisition methods, M1 generation devices support the Smart Mutual acquisition scheme, which is our proprietary implementation of a CDMA technique applied to capacitive touch sensors. It is designed to address the challenges posed by new display technologies, such as flexible on-cell OLED or micro-LED displays where display noise significantly interferes with the touch sensor. The Smart Mutual mode enhances the touch SNR by +15 dB compared to standard mutual implementations without increasing the Tx drive voltage.

Functional Safety Features

The M1 family offers a variety of functional safety features to constantly check the integrity of the following functions at power-up and during run time:

  • Touch controller operation with built-in self-tests for CPU, clocks, touch acquisition engine, RAM and power supplies
  • Embedded Flash with Error Correcting Code (ECC)
  • Integrity of attached flex PCB and touch sensor with sensor baseline configurable test limits

We offer a Failure Modes Effects and Diagnostic Analysis (FMEDA) and a functional safety manual to ease the design, development and certification of your ISO 26262 Automotive Safety Integrity up to Level B applications.

The ATMXT3072M1E and ATMXT2496M1E controllers have been developed according to our ISO 26262 Functional Safety Management System, which is certified by TÜV Rheinland.

Cybersecurity and Encryption

These maXTouch touchscreen controllers support Over-the-Air (OTA) upgrades to their embedded firmware. To counter cyberattacks to upload malicious firmware, they also feature a firmware authentication procedure based on SHA-512 hash algorithm that enables the host to verify that the device’s firmware is genuine.

When a pin code or password is entered via the display, the touch coordinates become sensitive data that must be protected. The M1 family of devices can encrypt touch data, which delivers a high level of protection without the need for costly countermeasures on the physical communication link to the main application processor.

Ultra-Low-Latency Haptic Feedback

The M1 Generation of touchscreen controllers features dedicated functions to achieve ultra-low-latency haptic by transferring the decision to generate the haptic waveforms from the main application processor to the touchscreen controller.

  • Shape Event Trigger: the maXTouch touchscreen controller can store a variety of shapes matching the virtual buttons, sliders or wheels displayed on the screen. The Shape Event Trigger function detects the relative position and movement of the finger over them and generates the appropriate event.
  • Pattern Pulse Width Modulation (PWM): DMA-enable automated PWMs can be automatically triggered by the Shape Event Trigger to generate the desired haptic or audio feedback.

Knob-on-Display™ Technology

To limit eyes-off-road time and promote safer drive, many automakers are reconsidering using separate physical controls for direct functions like adjusting the audio volume, temperature or fan speed. Our Knob-on-Display (KoD) technology allows you to add intuitive physical knobs on the touchscreen, which improves safety while preserving the visual appeal of modern vehicle displays. The M1E variants of the M1 Generation family support up to four knob instances that can be positioned anywhere on the touch display.

Design Resources

Part Number: EV51W41A

ATMXT1296M1 Evaluation Kit

Part Number: EV51W41A

This evaluation kit includes the ATMXT1296M1 development board and 12.3" touchscreen.

Part Number: EV36V52A

ATMXT1296M1 Development Board

Part Number: EV36V52A

This is a stand-alone development board for the ATMXT1296M1 family.

Part Number: EV13B92A

ATMXT3072M1 Evaluation Kit

Part Number: EV13B92A

This evaluation kit includes the ATMXT3072M1 development board and 15.6" touchscreen.

Part Number: EV01S50A

ATMXT3072M1 Development Board

Part Number: EV01S50A

This is a stand-alone development board for the ATMXT3072M1 family.