Microchip Technology Inc

maXTouch® Touchscreen Controllers

Turnkey Solution for Multi-Finger Robust and Reliable Touch Pads and Screens

The maXTouch touch controller family provides a leading projected capacitive technology for touchscreens and touch pads. It supports single-finger, multi-fingers and gloved-finger operation. Regardless of the operating environment—hot or cold, dry or wet, noisy power supply or strong radiating surrounding devices—maXTouch controllers are designed for robust and reliable operation without compromising touch performance.

The maXTouch portfolio covers solutions for all touch surfaces and touch screens up to 24” diagonal size. Additionally, I2C, SPI, and USB communication interfaces are available. maXTouch controllers embed best-in-class and proven touch algorithms which ease the touch system development and significantly reduce time to market.

Outstanding Noise Immunity
maXTouch technology has superior Signal-to-Noise Ratio (SNR), which enables you to successfully combat various sources of electromagnetic interferences such as:
  • Injected current noise
  • Display radiated noise
  • Backlight and motor radiated noise
  • Fast transient current
maXTouch devices are built on a highly parallel sensing architecture and carry multiple hard-wired analog and digital fi lters. Combined with a high-performance and low-power CPU core, maXTouch devices are capable of maintaining a fast reporting rate and excellent touch performances in the presence of severe electromagnetic noise sources. Additionally, all maXTouch devices are designed to meet high Electrostatic Discharge (ESD) requirements. maXTouch devices have an unmatched track record for touch panels in the automotive, home appliances, medical and industrial markets that have successfully passed the industry-related EMC standards.
Exceptional Touch Performance
maXTouch technology combines the best of mutual and self-capacitance sensing method to ensure optimal touch performances.
Moisture Tolerance
  • No false touch in the presence of water
  • Reliable finger tracking through water droplet
Accuracy and Speed
  • Up to 16 concurrent touch tracking
  • Up to 250 Hz reporting rate with active noise filtering
  • Below 1 mm linearity and accuracy
  • Best edge performance
Various Touch Sensor Technologies
  • Discrete solutions such as One Glass Solution (OGS) or Glass/Film/Film (GFF)
  • Display integrated solutions such as On-cell stack-up
  • Standard and proprietary sensors patterns with ITO or alternative materials
Mechanical Design Freedom
  • Thick front panel of glass or plastics
  • Non-rectangular shape
Glove Support
  • Multi-gloved finger tracking
  • Up to 5 mm glove thickness
Embedded Touch Gestures
  • Single-finger gesture such as tap, double-tap or flick
  • Dual-finger gesture such as pinch and rotate
Tabs / 2D maXTouch
Commercial and Industrial Devices
Screen Size
Device Package Interface HID
1-4" MXT144-MAU 38-pin QFN I2C No  No  Single-and dual-finger
MXT144U-UU 36-pin WLCSP
 3-7" MXT336U-MAU 56-pin QFN Yes No
 5-10"  MXT640U-CCU 88-lead UFBGA Yes
 9-12"  MXT1066T2-C2U 144-lead UFBGA (HDI)
MXT1066T2-NHU 117-lead UFBGA (non-HDI)
 10-16" MXT1664T3-C2U 162-lead UFBGA I2C and USB
MXT1664T3-CCU  136-lead UFBGA
 14-24" MXT2952T2-C2U 162-lead UFBGA
Automotive-Grade Devices

Dedicated members of the maXTouch device family are specifically designed for automotive applications. These devices are AEC-Q100 compliant and fully automotive qualified. They are available as Grade 3 (−40 to +85°C) or Grade 2 (−40 to +105°C) variants.

Microchip’s maXTouch automotive controllers are the first touch controllers to carry the Automotive SPICE Level 3 certification. All automotive maXTouch devices are available in QFP packages.

Screen Size
Device Package Interface AEC-Q100 Gestures
1-4" ATMXT336S-A 64-pin TQFP I2C Grade 3 Single- and dual- finger gestures
ATMXT225T-A 100-pin TQFP I2C and SPI Grade 3
(-40 to +85ºC)
Grade 2
(-40 to +105ºC)
4-5" ATMXT449T-A 100-pin TQFP
6-7" ATMXT641T-A 100-pin TQFP
8-9" ATMXT799T-A 144-pin LQFP
9-11" ATMXT1189T-A 144-pin LQFP
10-12" ATMXT1665T-A 144-pin LQFP
13-17" ATMXT3432S-A Chipset I2C and USB Grade 3

Touch and Input Sensing Video Channel