ATMXT2952T2-C2U - maXTouch Touch Controller | Microchip
MPN: ATMXT2952T2-C2U β Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATMXT2952T2-C2U Overview
A capacitive touchscreen controller is a mixed-signal IC that measures mutual-capacitance changes across a touch sensor grid, converts the raw charge-transfer measurements into touch coordinates and gesture information, and reports them to a host processor over a digital interface. In the system hierarchy, it sits within the human-interface / data acquisition domain: touchscreen controller -> capacitive touch sensor IC -> sensor interface IC -> mixed-signal semiconductor.
Key features of the ATMXT2952T2 family include Microchip's Adaptive Sensing technology, which automatically and intelligently switches between touch operating modes based on the detected object or environment, dynamic touch classification for finger, glove, stylus, and water rejection scenarios, and a debug port for tuning (per Microchip application note QTAN0050 'Using the maXTouch Debug Port'). The device supports I2C host communication; in I2C mode the pull-up resistor on the DBG_SS/GPIO0 shared ball is optional and present only if the ball is used as DBG_SS.
The architecture pairs a charge-transfer analog front end with on-chip processing that performs self- and mutual-capacitance scanning, noise filtering, and touch classification. Adaptive Sensing allows the same controller to deliver reliable touch performance on thick cover lenses, in wet conditions, and under EMI conditions typical of industrial panels.
Typical applications include industrial HMI touch panels up to 21 inches, factory automation displays, medical equipment screens, and commercial kiosk or point-of-information terminals where gloved-hand and water rejection are required.
A key design consideration is the shared DBG_SS/GPIO0 ball: only one of these two functions can be selected, and the circuit must be designed accordingly; consult the manufacturer datasheet and QTAN0050 before finalizing the sensor flex pin mapping.
Note that Microchip identifies ATMXT2952TD as the recommended alternative touch controller for the ATMXT2952T2, which is relevant for new designs and long-term supply planning. This page synthesizes distributor availability, the recommended replacement, and design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATMXT2952T2-C2U β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMXT2952TD-C2U
β Drop-Inπ Reference alternative (not in catalog)
ATMXT2952T2-C2U Specifications
| Product Type | Capacitive Touchscreen Controller |
| Family | maXTouch (mXT2952T2) |
| Touch Channels | Up to 2952 channels |
| Max Display Size | 21 inch |
| Target Market | Industrial |
| Technology | Adaptive Sensing |
| Touch Classification | Dynamic (finger, glove, stylus, water) |
| Host Interface | I2C |
| Debug Port | Yes (per QTAN0050) |
| Package Type | BGA |
| Mounting Type | Surface Mount |
| Manufacturer Recommended Alternative | ATMXT2952TD |
ATMXT2952T2-C2U bga Pin Configuration Guide
Pin configuration for ATMXT2952T2-C2U (bga package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ATMXT2952T2-C2U.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMXT2952T2-C2U is suitable for 6 applications: Industrial HMI Touch Panels, Factory Automation Displays, Medical Equipment Displays, Kiosk and Point-of-Information Terminals, Commercial and Vending Displays, Embedded Touch Interface Development.
Industrial HMI Touch Panels
The ATMXT2952T2-C2U fits industrial human-machine interface panels up to 21 inches because its 2952-channel capacity delivers the sensor node density that large-format mutual-capacitance touch screens require, while Adaptive Sensing maintains touch accuracy across the harsh electrical noise typical of factory floors. In a typical implementation, the controller sits on the sensor flex PCB, scans the touch grid and reports coordinates to the host processor over I2C. Dynamic touch classification lets operators use gloved fingers, and water rejection prevents false touches from condensation - both common failure causes in industrial touch panels. The I2C host link and maXTouch debug port (per application note QTAN0050) allow in-field tuning to compensate for cover lens thickness and EMI environment.
Recommended
Factory Automation Displays
In factory automation control panels and machine-mount displays, the ATMXT2952T2-C2U provides reliable touch input where vibration, EMI from motor drives, and moisture challenge conventional touch controllers. The Adaptive Sensing technology automatically switches operating modes when the environment changes, keeping the touch experience consistent without host-side intervention. Designers connect the sensor grid to the mXT2952T2 analog front end, and the controller handles charge-transfer scanning, noise filtering, and touch classification on-chip, offloading the host MCU. Because the DBG_SS/GPIO0 ball is shared, automation designers must decide during layout whether the debug port is needed in production; QTAN0050 defines the recommended debug circuit for tuning during commissioning.
Recommended
Medical Equipment Displays
Medical diagnostic and monitoring equipment commonly uses touch panels that must tolerate gloved operation and cleaning fluids. The ATMXT2952T2-C2U addresses both requirements: its dynamic touch classification distinguishes gloved fingers from bare fingers and rejects water-induced false touches, while the industrial-grade design supports the long product lifecycles typical of medical devices. Up to 21 inches of supported display area covers most patient-monitoring and diagnostic instrument screens. The controller reports touches over I2C to the medical host processor, and its on-chip processing reduces host CPU load for the UI stack. Verify the exact operating temperature grade and compliance certifications for the medical target market during qualification.
Recommended
Kiosk and Point-of-Information Terminals
Public-facing kiosks and point-of-information terminals need touch controllers that survive continuous use, moisture, and unattended abuse. The ATMXT2952T2-C2U supports displays up to 21 inches - the dominant kiosk panel size - and its water rejection capability prevents rain or cleaning spray from generating phantom touches. The maXTouch controller handles all touch scanning and classification on-chip and streams validated touch data over I2C, simplifying the host software stack in embedded kiosk players. For high-volume kiosk builds, the manufacturer-recommended alternative ATMXT2952TD should be evaluated for supply continuity, since Microchip positions it as the forward-looking part of this family.
Recommended
Commercial and Vending Displays
Vending machines and commercial signage touch displays benefit from the ATMXT2952T2-C2U's adaptive operation in outdoor and semi-outdoor environments where condensation and wet fingers are routine. The 2952-channel capacity supports dense sensor grids needed for accurate multi-touch on large screens, and Adaptive Sensing adjusts scanning behavior without host firmware changes. Electrical integration is straightforward: the controller mounts on the sensor flex, communicates over I2C, and exposes the maXTouch debug port for one-time tuning at the display OEM. Because the DBG_SS and GPIO0 functions share a single ball, the vending system schematic must commit to one function before PCB fabrication, per the mXT2952T2 datasheet.
Recommended
Embedded Touch Interface Development
For engineering teams developing new capacitive touch products around the maXTouch platform, the ATMXT2952T2-C2U serves as a development and qualification vehicle for the mXT2952T2 family. Microchip provides the family datasheet and application note QTAN0050 'Using the maXTouch Debug Port', which details debug-port hookup, the shared DBG_SS/GPIO0 ball constraint, and I2C pull-up requirements - all essential during sensor tuning. Teams can validate sensor layouts, cover-lens stacks, and EMI countermeasures before committing to production tuning profiles. When qualifying a new design, engineers should also evaluate the ATMXT2952TD recommended alternative to secure a second-sourced lifecycle path within the same Microchip maXTouch ecosystem.
Recommended
Recommended Products Summary
Engineering reference data for ATMXT2952T2-C2U β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMXT2952TD-C2U |
|---|---|---|
| Package | BGA | BGA |
| Brand | Microchip Technology | Microchip Technology |
| Adaptive Sensing | Yes | Yes (maXTouch family) |
| Target Market | Industrial | Industrial |
| Lifecycle Position | Active; TD recommended for new designs | Recommended alternative per Microchip |
Key Differentiators
- Adaptive Sensing with dynamic touch classification (vs Generic fixed-mode touch controllers)
- Large-format support up to 21 inches (vs ATMXT2952TD-C2U)
- Industrial market targeting (vs Consumer-grade touch controllers)
Design Notes
The DBG_SS line shares the same ball as GPIO0 on the mXT2952T2 - only one of these two functions can be chosen, and the circuit must be designed accordingly before PCB or flex fabrication. In I2C mode, the pull-up resistor R2 on that ball is optional and should only be populated if the ball is used as DBG_SS. Refer to Microchip application note QTAN0050 'Using the maXTouch Debug Port' for the complete debug-port design guidance.
Supply continuity: Microchip explicitly names ATMXT2952TD as the recommended alternative touch controller for the ATMXT2952T2. For new industrial designs and long-lifecycle products, evaluate the ATMXT2952TD at the schematic-capture stage, and verify ball map, tuning configuration, and package suffix equivalence in both datasheets before committing the layout.
As a fine-pitch BGA device on a touch sensor flex, the mXT2952T2 requires the ball map to be taken verbatim from the manufacturer datasheet - do not infer ball assignments. Keep the I2C host bus routing short with appropriate pull-ups on SDA/SCL, and route sensitive charge-transfer sensor lines away from switching noise sources (LED drivers, DC-DC converters) to preserve Adaptive Sensing accuracy on large-format panels.
Compliance Information
Compliance data was not present in the retrieved web data; verify on the official Microchip product page for ATMXT2952T2.
