ATMXT768E-CU - maXTouch 16-Touch Capacitive Touch IC | Microchip
MPN: ATMXT768E-CU β End of Life| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATMXT768E-CU Overview
A capacitive touch controller is a specialized mixed-signal IC that drives transmit and receive electrodes on a touch sensor, measures mutual-capacitance changes at each node, and applies proprietary signal-processing algorithms to report finger, stylus, and gloved-touch coordinates to a host processor. Within the touch system hierarchy, it sits between the raw touch sensor (a patterned ITO or similar conductor on glass or film) and the host interface, forming the sensing layer of human-machine-interface (HMI) subsystems in embedded, industrial, and consumer designs.
Key features include 16-touch simultaneous detection, support for shieldless single-layer sensor constructions that reduce stack-up cost and thickness, gloved-touch operation, and the maXTouch advanced touch-overlapping finger tracking for high-resolution, highly responsive operation on panels up to 10.1 inches or larger. The mXT768E-AT is part of Microchip's maXTouch E-series family, which integrates the acquisition engine and touch-processing firmware on-chip so the host receives processed touch reports rather than raw capacitance data.
Technically, the device uses mutual-capacitance scanning with Microchip's maXTouch acquisition technology, performing self- and mutual-capacitance measurement cycles and on-chip filtering to reject display and charger noise. Configuration and calibration data are typically stored in an external EEPROM or the host flash and loaded at power-up over the I2C-compatible interface.
Typical applications include industrial HMI touch panels, smart appliances, point-of-sale terminals, medical control panels, and larger-format embedded displays up to 10.1 inches and beyond.
Design consideration: note that Microchip has designated the ATMXT1189TD-A as the recommended alternative touch controller, so new designs should evaluate this part and plan for lifecycle management.
This page synthesizes distributor availability, the manufacturer-recommended replacement, and lifecycle guidance not consolidated in any single datasheet or distributor listing.
Drop-in alternatives for ATMXT768E-CU 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:
ATMXT1189TD-A
β Drop-Inπ Reference alternative (not in catalog)
ATMXT768E-CU Maximum Ratings & Electrical Characteristics
| Product Type | Capacitive Touchscreen Controller IC |
| Family | maXTouch mXT768E-AT |
| Sensing Technology | Mutual capacitance |
| Maximum Touchscreen Diagonal | 10.1 inch (and larger) |
| Maximum Simultaneous Touches | 16 |
| Gloved Touch Support | Yes |
| Shieldless Single-Layer Sensor Support | Yes |
| Package | 96-ball VFBGA |
| Mounting Type | Surface Mount |
| Recommended Alternative | ATMXT1189TD-A |
| Lifecycle Status | Not Recommended for New Designs (Microchip recommends ATMXT1189TD-A) |
ATMXT768E-CU 96-ball vfbga Pin Configuration Guide
Pin configuration for ATMXT768E-CU (96-ball vfbga 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 ATMXT768E-CU.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMXT768E-CU is suitable for 6 applications: Industrial HMI Touch Panels, Smart Appliance Controls, Point-of-Sale Terminals, Medical Control Panels, Embedded Display Modules, Automotive-Adjacent and Rugged Terminals.
Industrial HMI Touch Panels
The ATMXT768E-CU fits industrial human-machine-interface panels because it combines 16-touch detection with gloved-touch operation, a hard requirement on factory floors where operators wear protective gloves. Its support for screens up to 10.1 inches diagonal or larger covers the most common industrial panel sizes, and shieldless single-layer sensor support reduces stack-up thickness and cost in sealed enclosures. The controller is placed between the ITO sensor on the cover glass and the host PLC or embedded CPU, delivering processed touch reports so the host firmware stays simple. Consider the ATMXT1189TD-A for new industrial designs given the lifecycle transition.
Recommended
Smart Appliance Controls
Modern smart appliances such as ovens, washing machines, and refrigerators use glass-front capacitive touch panels where the ATMXT768E-CU provides multi-touch and gesture capability across panels up to 10.1 inches. The gloved-touch support accommodates kitchen environments, and the shieldless single-layer construction lowers the cost of large decorative glass fronts. The controller sits behind the cover glass, driving the sensor pattern and reporting touch coordinates over the host interface to the appliance MCU. Because wet-hand and glove detection depend on maXTouch firmware tuning, plan a calibration cycle during product development.
Recommended
Point-of-Sale Terminals
POS terminals and payment kiosks benefit from the ATMXT768E-CU's 16-touch detection for pinch-zoom on receipts and signatures and its responsiveness on panels up to 10.1 inches. The controller's mutual-capacitance architecture rejects noise from nearby displays and switch-mode power supplies common in retail hardware. It interfaces between the touch sensor laminated to the display and the POS mainboard, replacing resistive touch solutions with a more durable, multi-touch glass construction. For sustained-production retail platforms, qualify the ATMXT1189TD-A given Microchip's lifecycle recommendation.
Recommended
Medical Control Panels
Medical diagnostic and monitoring equipment requires touch controllers that operate reliably with gloved hands, and the ATMXT768E-CU explicitly supports gloved operation per Microchip's product description. Its 16-touch capability enables multi-finger interaction on 10.1-inch-class clinical displays, and the single-layer shieldless sensor option simplifies disinfectable sealed-glass front panels. The controller's processed touch-report output reduces load on the medical host processor, preserving resources for signal-processing workloads. Strict EMI and EMC verification is essential in medical environments, so budget lab time for sensor tuning during design-in.
Recommended
Embedded Display Modules
General embedded display modules - from ticketing machines to information kiosks - use the ATMXT768E-CU to add projected-capacitive multi-touch to TFT LCD assemblies up to 10.1 inches diagonal or larger. The 96-ball VFBGA package keeps controller board area small, allowing integration directly on the display driver board rather than a separate touch board. The controller performs acquisition, filtering, and tracking on-chip, delivering clean touch reports to embedded Linux or RTOS hosts. Designers should allocate an external configuration storage location for maXTouch calibration data loaded at each power-up.
Recommended
Automotive-Adjacent and Rugged Terminals
Ruggedized terminals used in logistics, warehouse scanners, and vehicle-mounted data terminals leverage the ATMXT768E-CU's gloved-touch support and 16-touch tracking on displays up to 10.1 inches, where resistive alternatives struggle with durability. The shieldless single-layer sensor capability thins the stack-up in enclosure-constrained rugged designs. The controller sits between the reinforced cover-glass sensor and the terminal's main CPU, feeding touch reports into the HMI application. For vibration-prone environments, confirm mechanical attachment and connector retention of the sensor flex assembly during qualification testing.
Recommended
Recommended Products Summary
Engineering reference data for ATMXT768E-CU β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMXT1189TD-A |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Sensing Technology | Mutual capacitance | Mutual capacitance (maXTouch) |
| Lifecycle Status | EOL / Not recommended for new designs | Active (recommended replacement) |
Key Differentiators
- 16-touch multi-finger detection (vs Single/two-touch resistive controllers)
- Shieldless single-layer sensor support (vs Conventional shield-layer touch stacks)
- Gloved-touch operation (vs Standard capacitive controllers without glove tuning)
Design Notes
The most significant lifecycle risk is that Microchip's ATMXT768E product page names ATMXT1189TD-A as the recommended alternative touch controller, meaning the mXT768E-AT is not recommended for new designs. Do not design the ATMXT768E-CU into new products; evaluate the ATMXT1189TD-A and confirm sensor-pattern compatibility before committing the PCB. For sustaining products, secure stock now through Mouser, DigiKey, or Microchip USA's excess-inventory channel, as end-of-life parts face unpredictable availability and price escalation.
The ATMXT768E-CU comes in a 96-ball VFBGA package, which requires fine-pitch land patterns, controlled reflow profiling, and typically an X-ray or inspection step for solder-joint verification. Route the sensor flex connections as matched, short traces away from display driver and switching-regulator noise sources, since mutual-capacitance touch accuracy is sensitive to coupled noise. Follow Microchip's maXTouch hardware design guidelines for the ground stitch and shield strategy appropriate to your sensor stack-up.
Touch controllers are sensitive to supply ripple because charger and display noise couple directly into the capacitance measurement. Provide a clean, well-decoupled analog supply per the maXTouch hardware design guidelines, with low-ESR decoupling at each VFBGA supply ball and a solid ground plane under the sensor routing. Simultaneously charging fingers, LCD backlight loads, and battery chargers create transient noise; verify touch accuracy with all system loads active, not in bench isolation, before release.
Compliance Information
Compliance details not present in verified web data; confirm on the Microchip product page or distributor compliance documents.
