ATMXT1386-Z2UR - maXTouch 1386-Node Touch Controller | Microchip
MPN: ATMXT1386-Z2UR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATMXT1386-Z2UR Overview
A capacitive touch controller is a type of human-machine interface (HMI) sensor IC that measures changes in capacitance across a projected-capacitive sensor grid to detect finger and stylus positions. Within the touch interface hierarchy, the ATMXT1386-Z2UR sits at the sensor-interface layer: touch sensor panel -> capacitive touch controller (maXTouch) -> host interface (I2C-style digital communication to an application processor). The maXTouch family, originally developed by Atmel and now part of Microchip Technology, is widely deployed in industrial HMI panels, appliances, and automotive-adjacent displays.
Key characteristics of this device include its 1386-node sensing matrix, which supports large-format touch panels with multi-touch capability, and the multi-chip architecture (4 chips) that scales charge-transfer acquisition channels across a large active area. The 32-bit AVR MCU core runs Microchip maXTouch acquisition and object-based reporting firmware, reporting touch objects to the host over a standard serial interface, which offloads all touch processing from the main CPU.
Technically, the maXTouch platform uses mutual-capacitance charge-transfer acquisition with self-calibration and drift compensation, delivering robust performance in the presence of fixed-pattern display noise. Configuration is stored in an object-table-based firmware structure, allowing panel-specific tuning of thresholds, integration levels, and reporting rates without redesigning the host firmware.
Typical applications include large industrial touch panels, human-machine interface terminals, white-goods appliance displays, and kiosk or point-of-information touch systems where a large node count is required.
Design consideration: verify panel compatibility and acquire the correct configuration object set for your specific sensor stack-up; Microchip explicitly recommends ATMXT1066T2 as the alternative touch controller for new designs.
This page synthesizes distributor availability data, the manufacturer-recommended alternative, and supply-chain cross-reference information not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATMXT1386-Z2UR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMXT1386-Z2UR (same form factor and footprint) — differing in Core, Function, Sensing Nodes.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMXT1386-U
✅ Drop-In📋 Reference alternative (not in catalog)
ATMXT1386E-U
✅ Drop-In📋 Reference alternative (not in catalog)
ATMXT1386E-XES-U
✅ Drop-In📋 Reference alternative (not in catalog)
ATMXT1066T2
✅ Drop-In📋 Reference alternative (not in catalog)
ATMXT1386-Z2UR Maximum Ratings & Electrical Characteristics
| Product Type | Capacitive Touch Screen Sensor Controller |
| Family | maXTouch |
| Sensing Nodes | 1386 nodes |
| Architecture | Multi-chip solution (4 chips) |
| Core Technology | Charge transfer + 32-bit AVR microcontroller |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Lead free / RoHS Compliant |
| Manufacturer Recommended Alternative | ATMXT1066T2 |
ATMXT1386-Z2UR standard Pin Configuration Guide
Pin configuration for ATMXT1386-Z2UR (standard 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 ATMXT1386-Z2UR.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMXT1386-Z2UR is suitable for 6 applications: Industrial HMI Touch Panels, Appliance and White-Goods Displays, Kiosk and Point-of-Information Terminals, Automotive-Adjacent Display Modules, Medical Equipment Control Interfaces, Gaming and Amusement Machines.
Industrial HMI Touch Panels
The ATMXT1386-Z2UR fits industrial human-machine interface panels because its 1386-node matrix supports large projected-capacitive sensor grids typical of factory terminals, and its charge-transfer acquisition with self-calibration maintains reliable touch detection in electrically noisy environments near motors, drives, and switching supplies. In a typical implementation the controller scans the full node matrix and reports discrete touch objects to the host PLC or HMI processor over a serial interface, offloading all touch processing from the host CPU. The 4-chip architecture distributes acquisition across the wide active area, so scan rate and sensitivity remain uniform edge to edge, which is a common failure point of smaller controllers on large panels. Designers should budget for panel-specific tuning of the configuration object set during commissioning.
Recommended
Appliance and White-Goods Displays
Home appliances demand touch controllers that survive moisture, gloved operation, and temperature swings; the ATMXT1386-Z2UR addresses this with the maXTouch platform's drift compensation and self-calibration, which keep the 1386-node matrix accurate as environmental capacitance shifts. In an oven or washing machine front panel, the controller sits behind glass or a thick cover lens, scanning the node matrix and reporting touch objects to the appliance MCU. The multi-touch capability of maXTouch enables gesture-style controls (swipe, multi-finger confirm) on large door-panel displays. Because the 32-bit AVR core handles acquisition autonomously, the appliance firmware only processes final touch events, simplifying safety-critical software certification paths. Confirm RoHS/REACH documentation from Microchip when targeting regulated consumer products.
Recommended
Kiosk and Point-of-Information Terminals
Public kiosks run continuously and see heavy multi-user interaction, so the ATMXT1386-Z2UR's 1386-node capacity suits large portrait or landscape touch screens where users expect responsive multi-touch zoom and gesture behavior. The controller's object-based reporting delivers already-classified touch and gesture data to the kiosk host PC or SoC, reducing host software complexity. In the signal chain, the maXTouch chip connects directly to the ITO sensor stack and communicates with the host over its serial interface; the 4-chip charge-transfer architecture keeps report rates consistent across the full panel even at large diagonal sizes, avoiding the edge dead zones seen when a small controller is stretched beyond its node budget. Panel-specific configuration tuning should be validated across the full enclosure assembly including bezels.
Recommended
Automotive-Adjacent Display Modules
Where non-safety display modules require large touch areas - such as seat-control centers, rear entertainment panels, or commercial-vehicle information displays - the ATMXT1386-Z2UR's 1386-node matrix and robust noise immunity support generous screen sizes. Note that the ATMXT1386 is not stated as AEC-Q100 qualified in available data, so verify qualification requirements with Microchip before automotive deployment; Microchip's newer maXTouch automotive lines may be more appropriate for instrument-cluster or center-stack applications. Functionally, the controller performs charge-transfer scanning with self-calibration and reports processed touch objects, letting the display SoC concentrate on graphics rendering. The multi-chip architecture's uniform acquisition helps maintain glove-touch sensitivity across the entire panel, a key acceptance criterion in vehicle cabin environments.
Recommended
Medical Equipment Control Interfaces
Medical diagnostic and monitoring equipment benefits from the ATMXT1386-Z2UR's sealed-glass capacitive interface, which replaces mechanical buttons that are hard to disinfect. The 1386-node matrix accommodates the larger screens typical of ultrasound consoles, patient monitors, and lab analyzers, while maXTouch self-calibration compensates for drift caused by repeated cleaning with conductive fluids. In operation the controller autonomously scans the sensor and reports classified touch objects to the equipment's host processor, keeping touch firmware out of the certified application software scope. Designers should validate performance with gloves and stylus profiles during design verification, and confirm REACH and RoHS declarations from Microchip for medical-market documentation. The serial host interface integrates cleanly with standard embedded medical compute platforms.
Recommended
Gaming and Amusement Machines
Arcade cabinets, ticket-redemption terminals, and casino game surfaces use large multi-touch areas where the ATMXT1386-Z2UR's 1386 nodes and multi-chip acquisition deliver the simultaneous-finger performance players expect. The maXTouch controller's fast charge-transfer scanning supports responsive multi-touch interaction across the entire play surface, and object-based reporting lets game firmware react to gestures with minimal latency. Because these environments involve long duty cycles and coin/bill acceptor electronics nearby, the controller's noise rejection and self-calibration are practical advantages over uncalibrated resistive solutions. Integration follows the standard maXTouch pattern: sensor stack to controller, serial interface to the game board host. Confirm long-term supply with your distributor, as Microchip recommends newer parts (ATMXT1066T2 and beyond) for new platform designs.
Recommended
Recommended Products Summary
Engineering reference data for ATMXT1386-Z2UR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMXT1386-U | ATMXT1386E-U | ATMXT1066T2 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Sensing Nodes | 1386 nodes | 1386 nodes | 1386 nodes | 1066 nodes |
| Core Technology | Charge transfer + 32-bit AVR | Charge transfer + 32-bit AVR | Charge transfer + 32-bit AVR | maXTouch charge transfer + 32-bit AVR |
| RoHS Status | Lead free / RoHS Compliant | Lead free / RoHS Compliant | Lead free / RoHS Compliant | Lead free / RoHS Compliant |
Key Differentiators
- Largest node count in its maXTouch generation (vs ATMXT1066T2)
- Scalable multi-chip architecture (vs ATMXT1066T2)
- Manufacturer-supported migration path exists (vs ATMXT1066T2)
Design Notes
The ATMXT1386 is a 4-chip multi-chip solution, not a single-die controller. When designing the PCB, obtain the exact mechanical and electrical definition for the Z2UR ordering code from the Microchip maXTouch datasheet, including any inter-chip routing constraints, before committing to a footprint. Assuming a generic maXTouch pinout leads to non-functional boards. Also confirm the exact package dimension drawing for the -Z2UR suffix, since maXTouch order codes encode package and qualification options that differ across the family.
maXTouch charge-transfer acquisition is sensitive to sensor and supply layout. Follow Microchip's maXTouch hardware design guidelines: place the controller close to the ITO sensor connector, keep analog sense lines away from switching regulators and display backlight drivers, and use solid ground planes under the sensing traces. Follow the datasheet's recommended decoupling network on each supply pin of the multi-chip assembly. For panel tuning, plan to iterate the configuration object set (thresholds, integration levels, report rate) after mechanical integration, since bezels and cover lens thickness shift measured capacitance.
Exact supply voltage and current figures for the ATMXT1386-Z2UR must be taken from the official Microchip datasheet, as they are not stated in distributor listings. Because the part integrates a 4-chip charge-transfer acquisition system plus a 32-bit AVR core, budget supply decoupling per chip and verify the power rail sequencing requirements in the datasheet before power-tree design. Do not copy supply ratings from smaller single-chip maXTouch parts such as the mXT640T class, as the multi-chip architecture has different rail and reset behavior.
Compliance Information
RoHS compliant / lead free per smrelectronics.com listing. REACH, halogen-free, and conflict-minerals status not stated in available distributor data.
