ATMXT336UD-MAUHA1

Overview

The ATMXT336UD-MAUHA1 is a maXTouch® 336-node touchscreen controller utilizing a charge-transfer acquisition engine for capacitive sensing. It supports mutual and self capacitance measurements to ensure accurate touch classification and tracking. The device operates on a nominal 3.3V supply with an internal 6.6V voltage pump for X line drive. It features I2C communication supporting Standard, Fast, and Fast-mode Plus speeds, alongside an SPI debug interface. Packaged in a 56-pin XQFN (6x6 mm) format, it functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports up to 14 X lines and 24 Y lines for a maximum of 336 sensor nodes.
• Tracks up to 10 concurrent touches with initial latency under 18 ms.
• Includes UL/IEC 60730 Class B functional safety support with self-diagnostics.
• Features moisture compensation for water drops up to 22 mm diameter.

Applications

• Home appliance control panels
• Industrial HMI interfaces
• Consumer electronics displays

Procurement Notes

Verify the specific ordering suffix against the manufacturer's Product Identification System. The base part number ATMXT336UD-MAUHA1 corresponds to standard packaging (trays), while the 'R' suffix indicates tape and reel options. Confirm package availability and firmware revision details directly with Microchip sales offices or authorized distributors prior to procurement.

Selection Notes

Select this component for designs requiring up to 336 sensing nodes and multi-touch capabilities. Ensure the host system supports 3.3V logic levels for Vdd, VddIO, and AVdd. Verify that the application stack-up allows for the required glass or PMMA thicknesses specified for finger and glove detection performance.

Part Context

This device belongs to the maXTouch® family of capacitive sensing solutions. It is designed to integrate with various display technologies including TFT, LCD, and OLED. The controller supports both discrete/out-cell sensors and on-cell/touch-on-display configurations, offering flexibility in front panel material design such as PET or glass.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.