ATMXT3432S-M-ATR

Overview

The ATMXT3432S-M-ATR is a maXTouch touchscreen controller manufactured by Microchip Technology. It features up to 162 equivalent touch channels in ultrawide mode, supporting large displays up to 34 inches in 7:1 format or 20 inches in 16:9 format. The device operates within a supply voltage range of 1.6V to 3.6V and supports interfaces including I2C and SPI. It is designed for automotive applications, meeting ASIL-A/B functional safety standards and ISO 26262 requirements. The component includes integrated firmware authentication for secure Over-the-Air updates compliant with ISO 21434:2021.

Feature Summary

• Supports up to 162 equivalent touch channels in ultrawide mode for large display formats.
• Meets ASIL-A/B functional safety standards per ISO 26262.
• Includes integrated firmware authentication for secure OTA updates per ISO 21434:2021.
• Operates on a 1.6V to 3.6V power supply with I2C and SPI interface support.

Applications

• Automotive infotainment systems requiring large curved or free-form touch displays.
• Vehicle main computer interfaces for reconfigurable touch input.
• Safety-critical touch interfaces adhering to ASIL-A/B standards.

Procurement Notes

Verify the specific ordering suffix and package type against the manufacturer's current datasheet before procurement. Confirm that the component meets the required automotive functional safety certifications (ASIL-A/B) for the intended application. Check for any recent Product Change Notifications (PCN) regarding manufacturing site or material changes. Ensure compatibility with the target system's I2C/SPI communication protocols and voltage levels.

Selection Notes

Select this component when designing for large-format automotive touchscreens requiring high channel counts and functional safety compliance. The ultrawide mode capability allows for flexible display aspect ratios up to 34 inches. Consider the integration of firmware authentication if Over-the-Air update capabilities are required. Verify that the QFN or similar package fits the PCB layout constraints and thermal requirements of the host system.

Part Context

This part belongs to the maXTouch M1 series of touchscreen controllers from Microchip Technology. It is designed to expand the range of available options for large, curved, and free-form touch displays in automotive environments. The series emphasizes functional safety and cybersecurity features, distinguishing it from standard consumer-grade touch controllers.

Replacement Considerations

Check for direct substitutes within the maXTouch M1 series, such as the ATMXT2496M1, which offers comparable channel counts. Verify pin-to-pin compatibility and software configuration file (.tcf) interchangeability. Ensure that any replacement maintains the required ASIL-A/B certification and firmware authentication capabilities.