ATMXT3432S-M-AT

Overview

The ATMXT3432S-M-AT is a capacitive touchscreen controller from Microchip Technology's maXTouch M1 series. It features a 100-TQFP (14x14) package and supports I2C and SPI interfaces with 12-bit resolution. Designed for automotive applications, it handles up to 3432 channels, supporting large displays up to 34 inches in 7:1 format or 20 inches in 16:9 format. The device meets ASIL-A/B functional safety standards and includes firmware authentication for secure OTA updates.

Feature Summary

• Supports unambiguous, unlimited touch input for complex user interfaces
• Achieves extremely low power consumption in standby states
• Enables responsive interaction through high-frequency report rates
• Integrates cybersecurity features for verified over-the-air firmware updates

Applications

• Automotive infotainment systems requiring ASIL-A/B compliance
• Large curved or free-form touch displays up to 34 inches
• Vehicle main computer integrated touch controllers
• High-reliability industrial control panels with strict safety standards

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified partners. Confirm the specific suffix matches project requirements, as variations may affect temperature range or packaging. Check current availability status, as this model may be subject to lifecycle changes. Ensure supply chain documentation aligns with automotive quality standards required for integration into safety-critical systems.

Selection Notes

Select this controller for applications demanding high channel counts and functional safety certification. Consider the 100-TQFP package constraints for PCB layout. Evaluate interface compatibility with the host processor for I2C or SPI communication. Assess thermal management needs given the automotive operating range. Verify that the firmware update mechanism aligns with existing vehicle network architectures.

Part Context

This component belongs to the maXTouch M1 series, designed specifically for automotive touchscreen applications. It integrates touch sensing capabilities with robust security features. The series supports reconfigurable touch channels to adapt to various display sizes and shapes. It is engineered to meet ISO 26262 functional safety management systems certified by TUV Rheinland.

Replacement Considerations

The ATMXT3432S-M-ATR is listed as an obsolete substitute option. Verify pinout and software compatibility before transitioning. No other direct public substitutes are confirmed in available documentation.