AT42QT5480-CU

Overview

The AT42QT5480-CU is a capacitive touch controller from the QTouch family, manufactured by Atmel (Microchip). It supports touchscreen configurations with up to eight-inch diagonal screen size and 1024 x 1024 resolution. The device features two-touch capability with independent XY tracking for one or two concurrent touches in real time, including touch size reporting. It integrates Adjacent Key Suppression (AKS) technology between groups of keys, sliders, or wheels. The component operates within a temperature range of -40 °C to 85 °C and utilizes a TQFP-44 package measuring 10 x 10 mm.

Feature Summary

• Supports two-touch capability with independent XY tracking for one or two concurrent touches in real time
• Integrates Adjacent Key Suppression (AKS) technology between groups of keys, sliders, or wheels
• Provides user-configurable advanced digital filtering for response times under 15 ms
• Includes up to four user-controllable general-purpose outputs (GPOs)

Applications

• Multi-touch interactive displays supporting up to eight-inch screens
• Consumer electronics requiring discrete key inputs with AKS
• Industrial control panels utilizing configurable sliders or wheels

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm voltage ranges and package variations. Ensure compatibility with existing I2C interfaces and check for RoHS compliance status. Confirm availability through authorized distributors as supply chains may vary. Validate that the selected variant meets the required operating temperature specifications for the intended application environment.

Selection Notes

Select this component when multi-touch functionality with real-time size reporting is required. Consider the AT42QT5480 series for applications needing high-resolution touchscreen support up to 1024 x 1024. Evaluate the need for Adjacent Key Suppression if dense button layouts are present. Verify that the TQFP-44 package fits the PCB design constraints and thermal requirements of the system.

Part Context

The AT42QT5480 belongs to the QTouch family of capacitive sensing solutions designed for complex human-machine interfaces. It combines touchscreen capabilities with discrete input handling in a single integrated circuit. This integration reduces bill-of-materials count compared to using separate controllers for touch and buttons. The series is widely used in appliances, industrial controls, and consumer devices requiring robust touch interaction.

Replacement Considerations

Check for updated revisions within the AT42QT5480 series for pin-compatible upgrades. Review Microchip's product change notifications for any packaging or material alterations. Ensure substitute components maintain the same QField Touchscreen and AKS feature set.