ATMXT640U-CCUR001

Overview

The ATMXT640U-CCUR001 is a maXTouch touchscreen controller IC from Microchip Technology, designed for capacitive touch applications. It supports up to 640 channels and features I2C and SPI interfaces. The device operates within a supply voltage range of 1.71V to 3.47V and draws 40 mA of supply current. It is housed in an 88-UFBGA package (6x6 mm) and functions reliably across a temperature range of -40°C to +85°C. This component is part of the maXTouch series, providing robust touch sensing capabilities for embedded systems.

Feature Summary

• Supports up to 640 channels for complex touch interfaces
• Dual interface support: I2C and SPI
• Operating voltage range: 1.71V ~ 3.47V
• Available in 88-UFBGA (6x6) surface-mount package

Applications

• Capacitive touchscreen controllers for industrial displays
• Embedded human-machine interfaces (HMI)
• Consumer electronics requiring multi-touch input

Procurement Notes

Verify component authenticity through authorized Microchip distributors. Check for Product Change Notifications (PCN) regarding packaging or labeling updates. Confirm RoHS compliance status as specified in the latest datasheet. Ensure ESD handling procedures are followed due to the sensitive nature of the UFBGA package.

Selection Notes

Select this model when high channel count (up to 640) is required for large or segmented touch panels. Ensure the host system supports either I2C or SPI communication protocols. Verify that the power supply can maintain stability within the 1.71V to 3.47V range under all operating conditions. Consider the 88-UFBGA footprint during PCB layout design.

Part Context

This part belongs to the ATMXT640 family of maXTouch controllers. It shares core architecture with variants like ATMXT640UD-CCUR001 but may differ in specific firmware configurations or manufacturing revisions. The 'U' suffix typically denotes a specific version or revision within the broader ATMXT640 product line.

Replacement Considerations

Direct substitutes include other ATMXT640 family members such as ATMXT640UD-CCUR001, provided pin compatibility and firmware requirements match. Cross-referencing with ATMXT640T-CCUR is possible if channel count and interface needs align, though verification of specific electrical characteristics is necessary.