ATMXT144UD-AMBSLI2CVA1

Overview

The ATMXT144UD-AMBSLI2CVA1 is a maXTouch touchscreen controller manufactured by Microchip Technology. It supports up to 144 nodes and utilizes I2C or SPI interfaces for communication. The device operates within a supply voltage range of 3.14 V to 3.47 V and functions at temperatures between -40°C and +105°C. It is housed in a VQFN-56 package designed for surface mount installation.

Feature Summary

• Supports capacitive touch sensing with up to 144 nodes
• Compatible with I2C and SPI communication protocols
• Designed for automotive-grade wide temperature operation

Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• In-car display touch interfaces

Procurement Notes

Verify the specific suffix AMBSLI2CVA1 against official Microchip documentation to confirm interface configuration and packaging details. Ensure compatibility with target system voltage levels and thermal requirements before integration. Cross-reference datasheet specifications for node count and operating temperature ranges.

Selection Notes

Select this component for applications requiring high node counts in automotive environments. Verify that the host processor supports the required I2C or SPI speeds. Confirm that the VQFN-56 package fits the PCB layout constraints and thermal management strategy.

Part Context

This part belongs to the maXTouch M1 series, which provides reconfigurable touch channels for large displays. The series is designed to meet functional safety standards such as ASIL-A/B and ISO 26262. It supports firmware updates via OTA and includes cybersecurity features for reliable operation in vehicles.

Replacement Considerations

Check Microchip's official substitution list for equivalent parts with similar node counts and packages. Verify pinout compatibility and electrical specifications before replacing.