ATMXT1664T3-CCU

Overview

The ATMXT1664T3-CCU is a maXTouch touchscreen controller IC manufactured by Microchip Technology. It supports up to 1664 nodes, enabling high-resolution touch sensing for large displays. The device integrates capacitive touch processing with configurable keys and touch objects. It operates within a supply voltage range of 1.8V to 3.6V and functions across an industrial temperature range from -40°C to +85°C. Communication interfaces include I2C and SPI, allowing flexible integration with host processors.

Feature Summary

• Supports up to 1664 touch nodes for high-density display applications
• Configurable touch objects including keys, sliders, and multi-touch gestures
• Dual interface support for I2C and SPI communication protocols
• Integrated firmware update capability via host processor

Applications

• Large-format commercial displays and digital signage
• Industrial control panels requiring robust touch input
• Automotive infotainment systems (subject to specific qualification variants)
• Medical equipment interfaces

Procurement Notes

Verify the exact suffix configuration against the manufacturer's current datasheet, as suffixes often denote package type, temperature grade, or RoHS compliance status. Confirm availability status directly with authorized distributors, as lead times may vary based on production cycles. Ensure the selected variant matches the required operating temperature range and interface specifications for the target design.

Selection Notes

Select this component when high node count and multi-touch precision are required for displays larger than standard handheld sizes. Compare against lower-node variants like the ATMXT224 if cost or pin count is constrained. Verify that the host system supports the necessary I2C or SPI clock speeds for optimal performance. Consider power consumption requirements relative to the 1.8V to 3.6V operating range.

Part Context

The ATMXT1664T3-CCU belongs to the maXTouch MXT series, designed for complex touch user interfaces. It succeeds earlier generations by offering higher channel counts and improved noise immunity. This specific model is part of a family that includes automotive-grade versions and different packaging options to suit various PCB layout constraints.

Replacement Considerations

Direct replacements must match the 1664-node capacity and physical footprint. Check for updated revisions within the same maXTouch family. Alternative controllers from other manufacturers require significant schematic and firmware redesign due to proprietary interface differences.