Touch-Sensoren
Produkte (40)
AS7050-BWLT - Biosignal AFE PPG/ECG/GSR I2C | ams OSRAM
The ams OSRAM AS7050-BWLT is a biosignal sensor analog frontend (AFE) for vital sign monitoring, providing up to 8 LED driver outputs and sampling up to 6 photodiode inputs with an I2C interface, housed in a lead-free WLP (wafer-level chip-scale package) supplied on tape and reel. A biosignal analog frontend is the signal-chain block that converts tiny physiological electrical and optical signals into digitized data. It sits between raw sensors (LEDs, photodiodes, skin electrodes) and the host microcontroller, integrating LED drivers, low-noise transimpedance and instrumentation amplifiers, ADCs, and digital filtering. AFEs form the core of the vital-sign-monitoring subsystem hierarchy within wearable sensor ICs. The AS7050 supports three biosignal modalities: photoplethysmogram (PPG) for heart-rate monitoring by sampling light modulated by expanding and contracting blood vessels; electrocardiogram (ECG) for cardiac electrical activity via external electrodes; and galvanic skin resistance (GSR) for stress and hydration measurement. Compared to the previous ams OSRAM biosignal sensor generation, the AS7050 is a full biosignal converting unit with the flexibility to support many LED and photodiode arrangements in different mechanical layouts. Technically, the 8 LED driver outputs allow multi-wavelength illumination (e.g., green, red, infrared) while up to 6 photodiode inputs enable multi-site or multi-angle light collection, improving signal-to-noise ratio and motion-artifact robustness. Support for external electrodes enables simultaneous optical and electrical biosignal capture on one IC, simplifying multi-modal designs. Typical applications include smartwatch and fitness-band heart-rate monitoring, clinical-grade ECG patches, and GSR-based stress monitoring in wearables and earbuds. Design consideration: pay close attention to optical crosstalk between LED and photodiode placement and use the I2C-programmable LED current settings to balance signal quality against power consumption in battery-powered designs. This page synthesizes distributor availability, datasheet-derived features, and practical design guidance not consolidated in the manufacturer short datasheet.
AT42QT1012-MAHR - 1-Key QTouch Touch Sensor IC | Microchip
The Microchip AT42QT1012-MAHR is a single-key capacitive touch sensor IC with toggle output, packaged in an 8-pin UDFN with exposed pad. It implements the proprietary QTouch® acquisition method, supports one touch key configurable either as a single touch button or as a proximity sensor, and operates from a 1.8V to 5.5V supply. Key headline parameters include an ultra-low standby supply current, on-chip power management, and an open-drain / push-pull output stage suitable for direct MCU interface or LED drive. What is a capacitive touch sensor IC? A capacitive touch sensor IC is a mixed-signal device that detects changes in capacitance caused by a finger approaching or touching an electrode. These devices sit in the sensor signal chain between the user-facing touch pad and a host microcontroller, translating pico-farad-level capacitance shifts into clean digital edges or level outputs. The hierarchy is: capacitive touch sensor -> touch controller IC -> human-machine interface (HMI) -> embedded system. Microchip's QTouch® family is among the longest-established capacitive-touch IP portfolios on the market. Key features of the AT42QT1012-MAHR include a maximum key count of 1, support for solid or ring electrode shapes, a minimum electrode size of 6 mm × 6 mm (panel-thickness dependent), single-layer PCB compatibility, advanced filtering algorithms for noisy environments, sensitivity adjustment via external Cs capacitor, and a programmable auto switch-off capability for the touch-on/touch-off toggle output. The 8-UDFN EP package reduces PCB footprint while the exposed pad provides thermal and electrical grounding. Architecturally the part combines a charge-transfer sensing frontend, a digital signal-processing block running Microchip's patented adjacent-key suppression / drift-compensation algorithms, and an output stage that supports both touch-on/touch-off toggle mode and direct level signalling. The on-chip power management provides low-power standby and fast wake on touch, making it suitable for battery-powered appliances. Typical applications include appliance front panels, IoT touch buttons replacing mechanical switches, proximity-activated wake circuits, LED-dimmable light controls, door-lock keypads, and consumer-electronics user interfaces. The single-key / single-IC simplicity makes it ideal when BOM and PCB area matter more than multi-key scanning. Designers should note that the Cs sample capacitor value directly sets sensitivity; smaller values raise gain and noise sensitivity, larger values lower gain and improve EMC robustness. A 47 nF NP0 ceramic on the Cs pin is a typical starting value per the Microchip datasheet. This page synthesizes distributor pricing, drop-in same-package alternatives, and design guidance beyond the manufacturer datasheet to accelerate component selection.
AT42QT1040-MMHR - 4-Key QTouch Sensor IC | Microchip
The Microchip Technology AT42QT1040-MMHR is a digital burst-mode, charge-transfer (QTouch) capacitive sensor driver IC supporting 1 to 4 touch keys in a 20-pin VQFN (3x3 mm) surface-mount package. It operates from 1.8 V to 5.5 V, draws a low quiescent current, and integrates all signal processing required to convert capacitive touches into discrete outputs, eliminating the need for external analog front-end components. A capacitive touch sensor is an electronic device that detects the presence or absence of a conductive object (typically a human finger) by measuring changes in capacitance on a sense electrode. These sensors sit in the broader category of human-machine interface (HMI) peripherals, alongside resistive touch panels, infrared proximity sensors, and mechanical switches. By replacing mechanical buttons with solid-state capacitive sensing, designers gain sealed, wear-free, and aesthetically clean user interfaces for consumer and industrial products. Key features of the AT42QT1040-MMHR include 1 to 4 individually configurable keys (unused channels are disabled simply by omitting their sense capacitor), automatic self-calibration within approximately 100 ms of power-up, automatic recalibration on stuck-key or slow drift conditions, and a simple parallel output interface. Each key has its own dedicated output pin, allowing direct GPIO connection to a host microcontroller without any I2C or SPI firmware overhead. The device uses Microchip's patented burst-mode charge-transfer acquisition, in which a fixed number of charge-transfer cycles per measurement produces a high signal-to-noise ratio while keeping average current consumption low. This makes it well suited for battery-powered applications where every microamp of quiescent draw matters, and for environments subject to electrical noise from motors, relays, or switching converters. Typical applications include appliance control panels, IoT smart-home touch buttons, automotive interior switches, medical device keypads, industrial equipment front panels, and consumer electronics such as remote controls and audio devices. The wide 1.8 V to 5.5 V supply range allows direct connection to 3.3 V MCUs, 5 V legacy logic, or Li-ion battery rails. When designing with the AT42QT1040-MMHR, pay close attention to PCB layout: sense traces should be short, guarded by a ground ring, and kept away from switching nodes. The sense capacitors should be low-drift ceramic types (typically X7R or C0G/NP0) to preserve touch sensitivity over temperature. This page synthesizes distributor pricing, drop-in alternatives, and practical PCB layout guidance not consolidated in the manufacturer datasheet, helping engineers select, source, and lay out the AT42QT1040-MMHR with confidence.
AT42QT2120-MMHR - 12-Channel QTouchADC Touch Controller | Microchip
The Microchip Technology AT42QT2120-MMHR is a 12-channel capacitive touch controller based on Microchip's QTouchADC (patent-pending self-capacitance) acquisition algorithm, packaged in a 20-pin VQFN (3x3 mm) and qualified over an extended industrial temperature range. It integrates 12 configurable touch channels that can be assigned as discrete buttons, slider segments, or wheel segments, plus I2C/SMBus-compatible communication for host readout. The part supports proximity sensing and drift compensation, with hardware-driven threshold/hysteresis values that are slaved to a slew-rate limited reference to absorb environmental drift. A capacitive touch controller is a mixed-signal IC that measures tiny changes in capacitance caused by a finger approaching or touching an electrode, then reports a debounced digital state to a host MCU. It sits in the signal-chain between input devices, capture/measurement hardware, and embedded microcontrollers; taxonomically: capacitive touch controller -> touch sensor IC -> sensor interface IC -> mixed-signal integrated circuit -> semiconductor. Because it converts an analog capacitance change into a robust, debounced digital signal over a robust serial bus, the device replaces mechanical switches and enables sealed, water-tolerant, and industrial-grade human-machine interfaces. Key features include operation from 1.8 V to 5.5 V supply, configurable touch keys up to 12 channels, programmable slider/wheel support, on-chip drift compensation, integrated AKS-like simultaneous key arbitration, low standby current for power- and battery-management use cases, and a small 20-pin VQFN EP package that simplifies PCB layout in compact HMI modules. The QTouchADC acquisition algorithm uses self-capacitance sensing to deliver longer-range proximity detection than conventional projected-capacitance parts. Architecturally, the device combines a charge-transfer analog front end, an internal reference capacitor network, and a finite-state machine that converts the analog burst waveform into debounced key status reported over I2C. This hardware state-machine approach offloads touch processing from the host MCU, allowing a low-cost microcontroller to manage the HMI. Internal slew-rate limited reference adjustment compensates for temperature, humidity, and mechanical drift without host intervention, ensuring long-term stability in consumer and industrial environments. Typical applications include consumer appliance control panels, automotive center-stack touch keys, industrial HMI keypads, smart-home touch sliders, and proximity-activated wake-up interfaces. Wide supply range and low power also fit battery-susceptible and wearable human-interface devices. When designing with this IC, follow Microchip's reference PCB layout for the VQFN exposed pad to ensure stable readings, and keep the I2C lines short with pull-ups per the SMBus specification. Plan electrode geometry per the datasheet's recommended touch-key layout, and reserve adequate ground copper around each touch node to avoid crosstalk. This page synthesizes distributor stock and lead-time signals, verified drop-in compatible alternatives, and practical PCB layout guidance that is not repeated in the manufacturer datasheet.
ATMXT112S-MA5UR - 112-Node maXTouch Touchscreen IC | Microchip
The Microchip Technology ATMXT112S-MA5UR (maXTouch mXT112S) is a 112-node projected-capacitive touchscreen controller IC for devices with screen sizes up to 3.5 inches, supplied in a QFN package on Tape & Reel. The device belongs to Microchip's maXTouch S Series architecture and is classified under Sensor, Capacitive Touch. A capacitive touchscreen controller IC measures mutual-capacitance changes across a grid of sense nodes embedded in the touch panel overlay. It sits within the broader hierarchy of sensor ICs: touch sensor -> capacitive touch sensor -> touchscreen controller -> human-machine interface (HMI) semiconductor. The controller scans the node matrix, applies noise-filtering and water-rejection algorithms, and reports touch coordinates to a host processor, typically over an I2C or SPI interface. Key features of the ATMXT112S-MA5UR include 112 mutual-capacitance sensing nodes, S Series maXTouch signal processing that supports gloved-touch and stylus operation, and support for touchscreen panels up to 3.5 inches diagonal. The S Series brings the same core acquisition engine as larger maXTouch devices to compact HMI panels, portable instruments, and small industrial displays. The mXT112S is manufactured by Atmel, now Microchip Technology, and continues the maXTouch product line with automotive-proven algorithms adapted for consumer and industrial touch panels. The 112-node budget allows a practical trade-off between X-Y electrode count and line widths on small panels, keeping sensor patterning cost low while retaining accurate multi-touch reporting. Typical applications include smartwatch and wearable HMIs, small handheld instrument displays, compact industrial control panels, and battery-powered devices with 2.4-inch to 3.5-inch touchscreens. Its low-node-count architecture suits cost-sensitive designs that do not require the 200+ node capacity of mXT1664S-class devices. Design consideration: firmware configuration (node mapping, acquisition settings, self-calibration thresholds) is written to the device's configuration memory; any footprint-compatible alternative in the maXTouch family must be re-tuned before production to maintain touch accuracy. This page synthesizes distributor stock status, drop-in alternative candidates, and practical design notes not found in the manufacturer datasheet.
ATMXT112S-MAU - 112-Node maXTouch Touch Controller | Microchip
The Microchip Technology (Atmel) ATMXT112S-MAU is a maXTouch S Series capacitive touchscreen controller IC with 112 sensing nodes, packaged in a 32-UQFN (4x4 mm) surface-mount package, designed for touchscreen devices with screen sizes up to 3.5 inches. A capacitive touch controller is a specialized interface IC that drives and measures a self-capacitance or mutual-capacitance touch sensor matrix, converting raw capacitance changes from finger or stylus contact into processed touch coordinates delivered to a host processor. Within the system hierarchy, it sits between the passive touch sensor (ITO pattern on glass or film) and the application host MCU, making it a core element of human-machine interface (HMI) subsystems in embedded electronics. Key features of the ATMXT112S-MAU include the maXTouch S Series architecture with 112 touch nodes supporting screens up to 3.5 inches, mutual-capacitance sensing for true multi-touch performance, and integrated touch processing that offloads touch detection, noise filtering, and coordinate calculation from the host processor. The maXTouch family is widely deployed in consumer, industrial, and appliance HMIs where reliable gloved-touch and water-rejection behavior is valued. Technically, the S Series integrates an acquisition engine that drives transmit lines and measures receive nodes through charge-integration front ends, followed by on-chip digital signal processing for touch classification. Configuration and calibration parameters are stored on-chip, and communication with the host is handled over a standard serial interface, per the manufacturer datasheet. Typical applications include small-format touchscreen HMI panels for appliances, wearable and handheld devices, automotive-style control panels, and industrial operator interfaces where a compact 3.5-inch or smaller capacitive touchscreen is used. Design consideration: note that Microchip has marked the ATMXT112S product page with a recommended alternative touch controller, ATMXT144U, so new designs should verify end-of-life status and consider the recommended successor before committing to new layouts. This page synthesizes distributor stock signals, the manufacturer's recommended-alternative notice, drop-in replacement guidance, and practical design notes not found in the datasheet alone.
ATMXT1188S-CU - maXTouch 1188-Node Touch Controller | Microchip
The Microchip Technology ATMXT1188S-CU is a single-chip projected-capacitive touchscreen controller from the maXTouch family, providing 1188 mutual-capacitance sensing nodes in a compact VFBGA12 package. It delivers optimized touch performance for tablets ranging from 7 inches to 10 inches and is designed to run with Windows 8 and Android host platforms. A capacitive touch controller is a type of human-machine interface (HMI) IC that measures tiny capacitance changes across a grid of touch sensor electrodes. Within the system hierarchy, it sits between the touch sensor glass (the electrode pattern laminated on the display) and the application host processor, converting raw analog capacitance data into filtered, gesture-ready touch coordinates over a digital interface. Touchscreen controllers are a subset of the broader sensor interface IC category within semiconductor-based HMI solutions. Key features of the ATMXT1188S-CU include its 1188-node sensing matrix, which supports large-format touch panels with many X-Y electrode crossings, and the high noise immunity that Microchip's maXTouch architecture is known for - essential when the touch sensor shares a flex or PCB with display drivers, Wi-Fi antennas, and switching power converters in tablet environments. The maXTouch signal-processing firmware handles finger tracking, palm rejection, and wet-finger operation, offloading these tasks from the host CPU. The single-chip architecture integrates the analog front end, charge drivers, and digital signal processing on one die, reducing bill-of-materials count compared to discrete solutions. Microchip's maXTouch devices are typically configured through an object-based register map over an I2C-compatible interface, allowing tuning of touch sensitivity, report rates, and acquisition parameters in system firmware. Typical applications include 7-inch to 10-inch tablet touchscreen systems running Windows 8 or Android, industrial HMI panels with capacitive glass, and portable devices requiring robust multi-touch performance in electrically noisy environments. When designing with this device, verify the sensor electrode pattern node count against the 1188-node limit and follow Microchip's maXTouch hardware design guidelines for sensor layout, ground stitching, and shielding to preserve the device's high noise immunity advantage. This page synthesizes distributor availability, cross-reference guidance, and practical selection notes not found in the manufacturer product page, including the manufacturer-recommended alternative controller ATMXT1066T2 for designs with different node-count requirements.
ATMXT1188S-CUR - maXTouch 1188-Node Touch Controller | Microchip
The Microchip Technology ATMXT1188S-CUR is a single-chip maXTouch capacitive touchscreen sensor IC with 1188 sensing nodes, designed for projected-capacitive touchscreens on 7-inch to 10-inch tablets running Windows 8 and Android. The device is supplied in tape-and-reel packaging, and the full pin-level package detail is documented in the Microchip datasheet. A projected-capacitive touchscreen controller is a mixed-signal interface IC that measures mutual-capacitance changes across an electrode grid and converts finger or stylus positions into touch coordinates for a host processor. Within the signal-chain hierarchy, it sits above the sensor glass itself and below the application processor, functioning as both a high-voltage charge-transfer analog front end and a digital touch-processing engine. Key features of the maXTouch mXT1188S family include 1188 nodes of mutual-capacitive sensing, high noise immunity for demanding tablet environments, and optimized performance specifically validated for 7-inch to 10-inch form factors. According to the family datasheet summary, the mXT1188S supports two touchscreens with true 12-bit multiple-touch reporting, up to 16 concurrent touches per screen, screen sizes from 8 to 12.1 inches with a 5 mm electrode pitch, and flexible grid configurations. These capabilities make it suitable for multi-user touch scenarios and glove or passive-stylus operation where lower-node controllers struggle. The architecture integrates the charge-transfer analog front end, a dedicated touch-processing engine, and configuration memory in a single chip, reducing bill-of-materials complexity compared with discrete sensor-plus-processor solutions. Microchip's maXTouch acquisition algorithms deliver noise immunity against display and charger noise common in consumer tablets. Typical applications include 7-inch to 10-inch Android and Windows 8 tablets, industrial touch panels, and human-machine interface displays requiring multi-touch, high-node-count sensing. Microchip explicitly recommends the ATMXT1066T2 as the alternative touch controller for designs needing a different node count. When designing with the ATMXT1188S-CUR, match the electrode grid configuration and electrode pitch (5 mm typical) to the controller's supported grid table, and verify the object-code configuration file generated by Microchip's touch tuning tools before production. This page synthesizes distributor inventory, Microchip's recommended alternative controllers, and drop-in variant guidance not consolidated in the manufacturer datasheet.
ATMXT1386-Z2UI - maXTouch 1386-Node Touch Controller | Microchip
The Microchip Technology ATMXT1386-Z2UI is a 1386-node projected-capacitive touch screen controller from the maXTouch product platform, implemented as a multi-chip solution combining four chips, each pairing charge-transfer touch sensing with a powerful 32-bit AVR microcontroller core. It is supplied in an industrial temperature-grade package (Z2UI suffix, -40C to +85C operating range per Microchip nomenclature). A projected-capacitive touch controller is a specialized mixed-signal interface IC that measures mutual-capacitance changes on a touch sensor grid, converts them into touch coordinates, and delivers them to a host processor over a digital interface such as I2C. Within the system hierarchy, it sits between the passive touch sensor stack and the host application processor, forming the human-machine interface (HMI) layer alongside display drivers and sensors. Key features of the ATMXT1386 include its 1386 sensing nodes, which enable large-format touch screens with high node density, and its charge-transfer acquisition architecture that delivers strong signal-to-noise ratio for gloved-touch, wet-finger, and passive-stylus operation. The integrated 32-bit AVR microcontroller executes maXTouch algorithms on-chip, offloading touch processing from the host CPU and enabling fast report rates. On-chip self-calibration and automatic drift compensation reduce tuning effort across sensor stacks. Technically, the multi-chip (4-chip) topology allows Microchip to scale node count beyond single-die limits: the controller chips cooperatively drive and sense the electrode matrix, making the device suited for tablets, industrial HMIs, and large touch panels where a single-node controller would be insufficient. The maXTouch firmware platform provides a common software model across the family, simplifying migration. Typical applications include large-screen tablets and e-readers, industrial control panels requiring robust multi-touch input, and automotive-adjacent capacitive HMI designs where maXTouch noise immunity against display interference is valuable. When designing with this part, verify the sensor stack topology and layout against the Microchip maXTouch design guidelines, since node mapping is firmware-configured; note that Microchip lists the ATMXT1066T2 as the recommended alternative touch controller for new designs. This page synthesizes distributor pricing, cross-reference alternatives, and practical design notes not found in the manufacturer datasheet.
ATMXT1386-Z2UR - maXTouch 1386-Node Touch Controller | Microchip
The Microchip Technology ATMXT1386-Z2UR is a capacitive touch screen sensor controller from the maXTouch product platform, implementing a 1386-node multi-chip solution built from 4 chips that combines charge-transfer touch sensing with powerful 32-bit AVR microcontroller technology. It is categorized as a Touch Screen Controllers IC (Sensor, Capacitive Touch) and is supplied in tape-and-reel packaging for automated surface-mount assembly. 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.
ATMXT1536E-M-CUR - maXTouch Capacitive Touch Sensor IC | Microchip
The Microchip Technology ATMXT1536E-M-CUR is a maXTouch E-series projected capacitive touch screen controller (touch sensor IC) engineered for multi-touch human interface applications, delivered in a compact surface-mount QFN package with a lead-free, RoHS-compliant construction. As part of the ATём — correction: as part of Microchip's established maXTouch family, this device integrates capacitive touch acquisition, self- and mutual-capacitance scanning, and touch-decision processing on a single die, offloading touch functionality from the host microcontroller. A capacitive touch controller is a type of sensor interface IC within the broader hierarchy of human-machine interface (HMI) semiconductors: sensor IC -> interface IC -> mixed-signal IC -> semiconductor. Projected-capacitive (PCAP) technology detects finger position by measuring changes in an electric field across an X-Y electrode grid, enabling multi-touch gestures through glass or plastic overlays. The maXTouch E-series targets mid-size touch panels such as smart-home control panels, appliances, automotive HMI sub-panels, and industrial touch surfaces. Key features of the ATMXT1536E-M-CUR include high channel-count mutual-capacitance scanning for multi-finger tracking, Microchip's proprietary touch-decision algorithms that reject water and noise interference, an I2C-compatible host interface for straightforward MCU integration, and operation from a low-voltage supply suitable for battery-powered and 3.3V embedded designs. The device supports flexible electrode pattern configuration through in-system firmware objects, allowing OEMs to tune sensitivity, report rates, and gesture behavior without hardware redesign. Architecturally, maXTouch E-series devices pair an analog front-end (AFE) with a digital signal processing core that performs baseline tracking, touch detection, and noise filtering, including frequency-hopping against charger-mode common-mode noise. Configurable object tables reside in nonvolatile memory and can be rewritten via the I2C bus during production calibration. Typical applications include capacitive touch buttons and sliders on appliance control panels, touchscreen interfaces in smart thermostats and home-automation keypads, and industrial HMI front-ends where glove operation or wet-finger robustness is required. When designing with this controller, follow Microchip's layout guidance: route sensor traces away from switching regulators, keep the sensor-to-IC traces short and matched, and allocate ground islands per the reference design to maximize signal-to-noise ratio. This page adds value beyond the datasheet by consolidating distributor sourcing links, verified lifecycle status, design and layout guidance, and drop-in family alternatives in one engineering-ready reference.
ATMXT1536E-S-CUR - maXTouch Capacitive Touch Sensor | Microchip
The Microchip Technology ATMXT1536E-S-CUR is a maXTouch E-series capacitive touch sensor interface IC, identified by Microchip and distributors as the MXT1536E Slave Chip, classified under Interface - Sensor, Capacitive Touch. It implements projected-capacitive touch sensing for touchscreen and touchpad front ends, offloading touch acquisition, noise filtering, and gesture interpretation from the host processor. A capacitive touch controller is a specialized sensor-interface device that measures tiny capacitance changes on electrode arrays when a finger or stylus approaches the panel. Within the system hierarchy, it sits at the sensor-interface layer of human-machine interface (HMI) design: below the host MCU or application processor and above the raw ITO electrode pattern. Modern capacitive touch ICs combine analog front-end (AFE) charge-transfer or self/mutual-capacitance measurement engines with DSP-based filtering to reject display and charger noise. The maXTouch E-series family is engineered for coexistence with active displays, offering water rejection, gloved-touch handling, and robust signal-to-noise performance in cluttered electrical environments. Devices in the family support self- and mutual-capacitance scanning, automatic calibration, and configurable touch thresholds, allowing tuning to different stack-ups and cover lenses. Architecturally, the MXT1536E Slave Chip variant is intended to operate as a subordinate touch-processing device in a multi-chip touch architecture, communicating with a host or master touch controller over a serial bus. This slave configuration enables larger touch systems to distribute scanning load across multiple devices. Typical applications include automotive touchpads and touchscreen systems, industrial HMI panels, and large-format capacitive touch surfaces where a slave touch-processing channel supplements a primary maXTouch controller. A key design consideration is firmware/configuration memory: maXTouch devices require a calibrated configuration object set matched to the panel stack-up; designers should plan for in-system configuration updates over the communication bus. This page synthesizes distributor availability data, family context, and practical design notes not found together on standard distributor catalog pages. Pricing is quote-based; contact XAIPART for current stock and lead time as of 2026-09-19.
ATMXT154-CUI - maXTouch 154-Ch Touch Controller | Microchip
The Microchip Technology ATMXT154-CUI is a maXTouch 154-channel projected-capacitive touch screen controller IC for touch screen converters and controllers applications, supplied by Microchip Technology (originally Atmel). A capacitive touch screen controller is a mixed-signal interface IC that scans a grid of mutual-capacitance sensing nodes, converts the capacitance changes into touch coordinates, and delivers filtered multi-touch gesture data to a host processor. Within the system hierarchy, it sits between the touch sensor panel (ITO patterned glass or film) and the application host, alongside display drivers and image processors in the human-machine-interface (HMI) subsystem. Key features of the maXTouch family include 154 sensing channels for large-format touch panels, robust multi-touch tracking, and built-in noise rejection that addresses the harsh electromagnetic environment created by LCD displays and charging systems. The ATMXT154 supports self- and mutual-capacitance scanning, water rejection, and gloved-finger operation typical of the maXTouch product line, enabling reliable touch performance in demanding industrial and consumer HMI designs. Architecturally, maXTouch controllers integrate an acquisition engine driving the sensor matrix, a digital signal processing block for coordinate calculation and palm/water discrimination, and a firmware-based configuration layer. Touch parameters such as sensitivity, report rate, and threshold are tuned via configuration files written over the I2C interface, allowing the same silicon to serve multiple panel designs. Typical applications include large-format industrial touch monitors, human-machine interface (HMI) panels for factory automation, touch-enabled appliances, and commercial display systems where high channel count and multi-touch accuracy are required. When designing with the ATMXT154, place the controller close to the touch sensor flex tail, keep sensor traces away from display power rails, and apply the correct panel-specific configuration file during production programming; incorrect configuration is the leading cause of field touch-performance complaints. This page synthesizes distributor pricing, sourcing channels, and practical design notes not found in the manufacturer datasheet, with all specifications flagged for verification where the retrieved web data did not provide exact values.
ATMXT154-CUIR - 154-Channel maXTouch Controller | Microchip
The Microchip Technology ATMXT154-CUIR is a maXTouch 154-channel projected-capacitive touchscreen and proximity sensor controller IC designed for mutual-capacitance touch sensing in medium-to-large touch panels. The -CUIR suffix identifies a lead-free, RoHS-compliant tray/reel-packaged device in a VQFN family surface-mount package. A projected-capacitive touch controller is a specialized mixed-signal IC that drives excitation signals onto transmit electrodes and measures mutual capacitance changes on receive electrodes to locate finger or stylus contact. Within the signal-chain hierarchy, it sits between the ITO sensor pattern on the display cover glass and the host processor, typically communicating over an I2C-compatible interface, making it a key element of human-machine interface (HMI) subsystems. Key features of the ATMXT154 family include 154 sensing channels that support dense electrode arrays, self-capacitance and mutual-capacitance measurement for gloved-hand and proximity detection, and Microchip maXTouch acquisition technology with noise filtering for use near LCD and OLED displays. The integrated microcontroller runs Microchip-supplied firmware and object-based configuration, allowing tuning via configuration files rather than firmware redesign. Technically, the device combines an analog front end with charge-integrating receive channels, a high-resolution acquisition engine, and digital signal processing for palm rejection and water rejection. Object-based configuration enables OEMs to adjust thresholds, electrode geometry maps, and touch report rates to match panel stack-up and display noise conditions. Typical applications include industrial HMI touch panels, home-appliance control surfaces, smart-home wall controllers, and automotive center-stack or climate-control touchscreens where robust noise immunity near displays is required. A key design consideration is the host interface configuration: the controller must be configured with the correct object set for the specific sensor pattern, and display-noise synchronization (to the display refresh) should be enabled to avoid jitter in high-noise environments. This page synthesizes distributor availability, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
ATMXT154-CUR - maXTouch 154-Channel Touch Controller | Microchip
The Microchip Technology ATMXT154-CUR is a maXTouch capacitive touchscreen controller IC supporting up to 154 touch channels, designed for projected-capacitive touchscreens in a surface-mount package. It belongs to Microchip's maXTouch family of touch screen controllers, handling multi-touch sensing, stylus detection, and noise-robust touch acquisition for consumer and industrial human-machine interfaces. A touchscreen controller is a specialized mixed-signal IC that drives transmit and receive electrodes of a capacitive touch panel, measures mutual-capacitance changes at each sensor node, and applies proprietary algorithms to convert raw capacitance data into accurate X/Y touch coordinates. Within the system hierarchy, the touchscreen controller sits between the touch sensor stack (ITO patterned glass or film) and the host processor, communicating touch reports over an I2C or SPI-style host interface while managing sensor drive, filtering, and calibration autonomously. Key differentiating capabilities of the maXTouch platform include high channel counts that enable large-format touch panels, simultaneous multi-touch reporting, support for passive stylus and gloved-hand input, and water-rejection and noise-immunity algorithms that maintain accuracy in electrically noisy environments such as automotive cabins and industrial floors. The device integrates the analog front end, charge amplifiers, ADC-based acquisition, and a processing core on one die, reducing the external component count of the touch subsystem. Technically, the maXTouch architecture uses mutual-capacitance scanning with programmable frame rates and configurable channel mappings, allowing panel makers to optimize scan time versus signal-to-noise ratio. Firmware-defined configuration objects are stored on-chip and can be updated by the host, which shortens touch-tuning cycles during display module integration. Automatic calibration compensates for panel aging, temperature drift, and manufacturing spread across sensor stacks from different glass suppliers. Typical applications include capacitive touch panels in consumer appliances, smart-home control panels, industrial HMI displays, and point-of-information terminals where multi-touch gestures and robust operation against display noise are required. The 154-channel capability suits medium-to-large panels used in kitchen appliances, fitness equipment, and embedded display modules. A key design consideration is touch firmware configuration: performance depends heavily on a configuration file matched to the specific sensor stack (glass thickness, ITO pattern, overlay), so budget engineering time for touch tuning with the target panel and noise source in place. Ensure the host interface power domain and reset sequencing follow the maXTouch porting guide to avoid boot failures. This page synthesizes distributor availability data, lifecycle context, alternative-part search results, and practical design notes not found in the manufacturer datasheet.
ATMXT154E-CCU - maXTouch 154-Ch Touch Controller | Microchip
The Microchip Technology ATMXT154E-CCU is a maXTouch 154-channel projected-capacitive touch screen sensor IC housed in a 49-ball BGA (CCU) package. It belongs to the maXTouch family of touch screen converters and controllers, designed to drive and measure large-format projected-capacitive touch panels with high channel counts for multi-touch and passive-stylus performance. A capacitive touch controller (also called a touch screen sensor IC or touch screen converter) is a mixed-signal device that excites rows and columns of a transparent ITO electrode pattern, measures mutual-capacitance changes caused by a finger or stylus, and processes those measurements on-chip to output touch coordinates over a digital host interface. Within the system hierarchy, it sits above the raw touch sensor stack and below the host application processor, forming part of the human-machine interface (HMI) subsystem. Key differentiators of the ATMXT154E family include its high sensor channel count of 154 lines, support for multi-touch reporting, integrated touch-processing firmware that offloads the host CPU, and Microchip's maXTouch signal-processing algorithms for moisture tolerance and noise immunity in demanding environments. The BGA49 package keeps the footprint compact behind the display module. Architecturally, the maXTouch devices integrate an analog front end (AFE) with charge amplifiers and ADC, a digital signal-processing engine executing touch detection and tracking, and a serial interface to the host. Configuration objects stored in the device's non-volatile memory allow tuning of thresholds, report rates, and sensor geometry without external components. Typical applications include automotive center-stack and climate-control touch displays, industrial HMI panels, large-format human-machine interfaces in appliances, and commercial touch monitors where 100+ channel panels require high signal-to-noise-ratio sensing. When designing with the ATMXT154E-CCU, the touch panel stack-up, ITO pattern geometry, and grounding of adjacent display electronics must match the family design guidelines; sensor tuning through the maXTouch configuration files is normally required and should be validated with the actual panel and display assembly. This page synthesizes distributor pricing and availability, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet, with all uncertain values explicitly flagged rather than estimated.
ATMXT1664S-CU - maXTouch 1664-Channel Touch Controller | Microchip
The Microchip Technology ATMXT1664S-CU is a maXTouch S Series capacitive touchscreen controller IC with 1664 mutual-capacitance sensing channels, built around a powerful 32-bit AVR processor, supplied in a surface-mount QFN-type package. It acquires and processes touch data on-chip and outputs gesture and coordinate data to a host over an I2C-compatible interface. A capacitive touch controller is a mixed-signal power management and human-interface IC that drives transmit electrodes, measures mutual capacitance changes on receive electrodes, and applies signal-processing algorithms to report finger or passive-stylus positions. It sits within the human-machine interface (HMI) hierarchy: capacitive touch controller -> sensor interface IC -> mixed-signal IC -> semiconductor. In larger touchscreen systems it replaces discrete MCU-based scanning solutions, offloading touch acquisition from the main application processor. Key features of the mXT1664S include its 1664-channel sensing matrix, which supports large-format touchscreens with high electrode counts; the S Series architecture with on-chip 32-bit AVR processing for real-time touch decision-making; support for Multi-Touch All Points (MTAP) reporting; and water-rejection and noise-immunity processing designed for challenging electrical environments. Microchip's maXTouch firmware ecosystem provides object-based configuration, so touch tuning is performed via firmware objects rather than hardware redesign. Technically, the device integrates an analog front end (AFE) with programmable charge amplifiers and a digital back end running Microchip's maXTouch algorithms. The 32-bit AVR core executes acquisition sequencing, noise filtering, and gesture detection, reducing host CPU load. Configuration is stored in an EEPROM-like object space, enabling field updates and multiple panel profiles. Typical applications include large touchscreens for industrial HMI panels, automotive-grade infotainment displays, point-of-sale terminals, and smart-appliance interfaces, where high electrode counts and robust noise immunity are essential. Design consideration: maXTouch S Series devices require panel-specific tuning of the acquisition and noise-suppression object settings; plan firmware tuning time into the schedule and confirm the exact package and pinout from the manufacturer datasheet before layout. This page synthesizes distributor availability, the manufacturer-recommended replacement, and drop-in alternative guidance not consolidated in any single datasheet.
ATMXT1664S-CUR - maXTouch 1664-Node Touch Controller | Microchip
The Microchip Technology ATMXT1664S-CUR is a maXTouch S Series capacitive touchscreen controller IC supporting up to 1664 mutual-capacitance sensing nodes, delivered in a tape-and-reel surface-mount package for high-volume touchscreen integration. A capacitive touchscreen controller is a mixed-signal IC that measures tiny capacitance changes on a touch sensor grid, converts them into touch coordinates, and transmits them to a host processor. Within the system hierarchy it sits between the passive sensor laminate and the host SoC: sensor -> touch controller -> interface bus -> application processor. The maXTouch S Series from Microchip (originally Atmel) is a family of such controllers aimed at medium and large-format touch panels used in automotive, industrial, and premium consumer displays. The ATMXT1664S benefits from Microchip's 32-bit AVR-based architecture, which provides the processing headroom needed for large grids while executing advanced touch algorithms. Family documentation for the mXT1664S identifies an I2C host interface, support for screens up to approximately 14 inches, a touch report rate of up to 250 Hz, 16 simultaneous touches, 1664 maximum nodes, a -40C to +85C operating temperature range, and automotive qualification, making the S Series suitable for demanding vehicle and industrial HMI designs. The -CUR suffix denotes a lead-free, RoHS-compliant tape-and-reel ordering code. Key differentiators of the S Series include self- and mutual-capacitance operation for gloved-hand and stylus support, water rejection, noise immunity algorithms for charger and display interference, and firmware-configurable sensing parameters stored in an embedded configuration block. These features allow OEMs to tune sensitivity, edge exclusion, and scan frequency per panel design without hardware changes. Typical applications include automotive center-stack and cluster touchscreens, industrial control panel HMIs, medical equipment displays, smart appliances, and premium consumer devices that require large, multi-touch capacitive panels with high report rates and robust noise rejection. An important design consideration is that the mXT1664S is being phased out of primary promotion: Microchip's product page explicitly designates ATMXT1664T3 as the recommended alternative touch controller, so new designs should evaluate the T Series before committing. This page synthesizes distributor availability, Microchip lifecycle guidance, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.
ATMXT224E-MAHR - 224-Ch 10-Touch Capacitive Touch Controller | Microchip Technology
The Microchip Technology ATMXT224E-MAHR is a maXTouch mutual-capacitance touchscreen controller IC delivering 224 sensing channels, up to 10 simultaneous touches, and support for touchscreens up to 7 inches in diagonal, housed in a compact QFN surface-mount package. A capacitive touchscreen controller is a mixed-signal IC that drives excitation signals into a sensor electrode grid and measures the mutual-capacitance changes caused by a finger or stylus. It sits at the sensor layer of the human-machine interface hierarchy (touchscreen controller -> touch sensor IC -> HMI subsystem), converting raw capacitance data into filtered touch coordinates that the host processor reads over a serial bus. The maXTouch family, originally developed by Atmel and acquired by Microchip Technology, is one of the most widely deployed projected-capacitive touch controller product lines in smartphones, tablets, and industrial HMIs. Key differentiating features of the mXT224E include its 224-channel mutual-capacitance sensing matrix, advanced touch processing that can ignore unintentional touches from a gripping hand or resting palm while correctly interpreting genuine finger contact, and support for up to ten simultaneous touches. The device integrates the sensing analog front end and the touch-decision engine on a single die, offloading touch processing from the host CPU and reducing system-level power and software complexity. On the technical side, the mXT224E uses the same core maXTouch technology as the mXT224 generation and is configured via the mXT224E Protocol Guide; firmware and configuration data are stored on-chip and can be updated over the communication bus, allowing tuning of sensitivity, acquisition intervals, and touch thresholds for different sensor stacks. Microchip's product page notes the recommended alternative touch controller is ATMXT336U for new designs. Typical applications include smartphone and tablet touchscreens of up to 7 inches diagonal, portable medical devices with touch HMI panels, industrial operator interfaces, and consumer appliances requiring multi-touch gestures such as pinch-to-zoom and multi-finger tracking. Design consideration: because maXTouch performance depends on the specific sensor stack (ITO pattern, cover lens thickness, bonding method), budget lab time for tuning the configuration using Microchip's maXTouch Studio tools before finalizing the sensor design. This page synthesizes distributor availability data, the manufacturer product page, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet.
ATMXT224S-MAUR - 224-Node Capacitive Touch Controller | Microchip
The Microchip Technology ATMXT224S-MAUR is a maXTouch capacitive touchscreen controller IC with 224 mutual-capacitance sensing nodes, delivered in a 56-terminal QFN no-lead (HVQCCN, code MA) square chip-carrier package. It supports passive stylus operation down to 1.5 mm, multi-touch finger tracking, and moisture robustness. A capacitive touchscreen controller is a mixed-signal IC that measures mutual-capacitance changes across a touch sensor grid, converts them to touch coordinates, and communicates them to a host processor. Within the signal-chain hierarchy it sits between the passive touch sensor laminate and the host MCU or application processor, forming part of the human-machine interface (HMI) subsystem of touch-enabled displays. Key features include Microchip's patented mutual-capacitance method for unambiguous multitouch performance, optimized position filtering algorithms for smooth touch tracking, stylus detection that distinguishes stylus touches from finger touches, and suppression of unintentional touches for moisture robustness and superior noise immunity. The 224-node sensor matrix supports smartphone-class displays with high node density. Architecturally, the mXT224S uses Atmel/Microchip's mutual capacitance sensing with on-chip acquisition hardware and embedded algorithms for position filtering, so host-side software burden is minimized. This makes it well suited to high-performance smartphone and tablet touch front-ends where latency and tracking smoothness matter. Typical applications include smartphone touchscreens, tablet and portable media-player displays, and industrial HMI panels requiring stylus input. The 1.5 mm passive stylus support and noise immunity make it appropriate for resistive-to-capacitive migration designs. Design consideration: moisture and unintended-touch suppression settings must be tuned to the specific sensor stack-up, so plan firmware configuration time during bring-up. This page synthesizes distributor availability data, Microchip-recommended alternatives, and drop-in replacement guidance not found in the manufacturer datasheet alone.
ATMXT224SL-CCUR - maXTouch 224-Channel Touch Controller | Microchip
The Microchip Technology ATMXT224SL-CCUR is a maXTouch series 224-channel capacitive touchscreen controller IC designed for projected-capacitive touch panels, supplied in tape-and-reel packaging for automated surface-mount assembly. A capacitive touchscreen controller is a specialized mixed-signal interface IC that measures tiny capacitance changes across an electrode grid when a finger or stylus approaches the panel surface. Within the touch-sensing hierarchy, it sits between the passive sensor glass (ITO electrode pattern) and the host processor: the controller drives excitation signals into the sense lines, digitizes the resulting capacitance matrix, performs touch detection and finger tracking in firmware, and reports interpreted touch coordinates to the host over a digital interface. In this role it belongs to the broader family of human-machine interface (HMI) semiconductors alongside button controllers and gesture ICs. The defining feature of the maXTouch platform, and of this 224-channel part specifically, is its highly scalable sensing architecture: a large node count enables smart processing of capacitive images, supporting multi-touch tracking, stylus operation, and noise immunity on medium-to-large touch panels. Microchip documents that the maXTouch architecture enables intelligent processing of capacitive sensor arrays, which is critical for high signal-to-noise touch performance on displays susceptible to charger and display noise. Devices in this family integrate the analog front end (charge amplifiers and ADC), the digital signal processing engine for touch detection, and configuration memory in a single chip, reducing bill-of-material complexity versus discrete solutions. Configuration is typically applied through firmware objects that set channel mapping, touch thresholds, and noise filtering parameters. Typical applications include medium-to-large capacitive touch panels in industrial HMI panels, appliances, smart home controls, and commercial equipment displays where robust multi-touch performance is required. A key design consideration is sensor layout: electrode routing, trace length matching, and panel stack-up strongly influence sensitivity and noise immunity, so Microchip provides board design files and configuration tools for the maXTouch family that should be used during bring-up. This page consolidates verified distributor listings, series identification, packaging data, and sourcing guidance for the ATMXT224SL-CCUR, including lifecycle and alternative-part analysis not found on distributor product pages.
ATMXT224SL-MAHR - 224-Channel maXTouch Touchscreen IC | Microchip
The Microchip Technology ATMXT224SL-MAHR (originally Atmel) is a maXTouch capacitive touchscreen sensor controller IC that supports up to 224 mutual-capacitance sensing channels, delivered in bulk packaging. It belongs to the maXTouch family of projected-capacitive touch controllers that convert raw electrode capacitance measurements into calibrated multi-touch coordinate data, offloading touch processing from the host processor. A capacitive touch controller is a mixed-signal IC within the broader touch-sensing subsystem hierarchy: capacitive touch sensor -> touch controller IC -> human-machine interface (HMI) -> embedded system. The controller drives transmit electrodes and measures receive-electrode capacitance changes caused by a finger or stylus, then applies internal signal-processing algorithms for noise rejection, water rejection, and touch tracking before reporting touches over a digital interface. The maXTouch architecture integrates the analog front end (charge amplifiers and ADC), a processing engine for touch detection and tracking, and firmware-executed self-calibration. Key capabilities typical of the maXTouch family include multi-touch reporting, proximity detection, and object (passive stylus/glove) detection, allowing designers to implement responsive touchscreens without external touch DSPs. Channel counts in the range of 224 nodes make this device suitable for medium-to-large-format touchscreens where electrode arrays span hundreds of intersections. Technical depth: the maXTouch signal chain continuously scans the sensor matrix, applies per-node baseline tracking to compensate for drift, and filters measurement data to reject display and charger noise - a critical requirement when the touch sensor shares a stackup with an active LCD or OLED panel. Configuration is stored on-chip and can be updated by the host, enabling tuning of sensitivity, report rate, and gesture thresholds per product. Typical applications include industrial HMI touch panels, appliance control screens, medical device displays, smart-home wall panels, and automotive-adjacent information displays where multi-touch operation and robust noise immunity are required. Design consideration: because touch-controller performance depends heavily on sensor stackup, panel geometry, and display noise environment, budget engineering time for sensor tuning with the manufacturer configuration tools rather than assuming default settings will meet latency and accuracy targets. This page synthesizes distributor availability data, cross-reference search results, and practical selection guidance not consolidated in the manufacturer datasheet, with all unverified parameters explicitly marked rather than estimated.
ATMXT336S-CCUR - 336-Node maXTouch Touchscreen IC | Microchip
The Microchip Technology ATMXT336S-CCUR is a maXTouch 336-node projected-capacitive touchscreen controller IC with an I2C interface, integrated maXFusion sensor hub technology, support for 2.0 mm passive stylus input, and a 64-pin TQFN surface-mount package. A capacitive touchscreen controller is a mixed-signal IC that drives and senses a grid of mutual-capacitance nodes on a touch sensor, converting finger and stylus position data into digital coordinates for a host processor. Within the system hierarchy, it sits between the physical touch sensor stack (ITO patterned glass or film) and the application processor, forming part of the human-machine interface (HMI) subsystem alongside display drivers and sensor hubs. Microchip's maXTouch family, originally developed by Atmel, is a well-established product line in this category. The mXT336S uses Microchip's patented capacitive touch technology to deliver the highest touch performance demanded by flagship smart phones. With 336 sensing nodes, the controller can drive large sensor arrays while supporting fine-pitch passive stylus input down to 2.0 mm tip diameter, enabling note-taking and precision drawing use cases. Water rejection and gloved-finger operation are typical maXTouch family capabilities for this class of device. A defining feature of the newest maXTouch members, including the mXT336S, is integration with maXFusion sensor hub technology. maXFusion fuses inputs from external accelerometers, gyroscopes, and magnetometers, processing location, orientation, direction, and inclination data in real time to enhance gaming, navigation, and virtual reality applications, offloading this workload from the application processor. The device communicates with the host over an I2C serial interface, the standard bus for touchscreen controllers in mobile designs. Typical applications include premium smart phones, tablets, and other touch-centric mobile devices where high node count, stylus support, and sensor fusion are required. When designing with the ATMXT336S-CCUR, verify sensor stack compatibility, firmware/configuration image matching, and I2C pull-up sizing against the manufacturer datasheet, since touchscreen performance depends strongly on the sensor pattern and config file pairing. Note that Microchip's product page lists the ATMXT336U as the recommended alternative touch controller for new designs. This page synthesizes distributor availability, cross-reference data, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet. Pricing is provided via RFQ as of 2026-09-19.
ATMXT3432S-M-CCU - maXTouch Touchscreen Controller | Microchip
The Microchip Technology ATMXT3432S-M-CCU is a member of the maXTouch family of projected-capacitive touchscreen controller ICs, part of the mXT3432S series optimized for touchscreens up to 17.3 inches, and is supplied in the CCU package option with Tray packaging. A capacitive touchscreen controller is an interface IC that measures changes in capacitance across a touch sensor grid, converts those measurements into touch coordinates, and delivers them to a host processor over a standard communication bus. Within the system hierarchy, the maXTouch controller sits between the passive touch sensor (ITO film or similar) and the host MCU or application processor, functioning as a specialized mixed-signal sensor interface IC in the touch subsystem of interactive displays. Key characteristics include the maXTouch 3432-node touchscreen controller architecture, 32-bit processing of touch data, and support for shieldless design implementations that reduce stack-up cost and thickness. The mXT3432S family enables up to 10 concurrent touches in real time with touch size reporting, and communicates via I2C or USB interfaces according to Microchip product documentation for the family. The maXTouch architecture integrates a dedicated touch acquisition engine with embedded flash and configurable object tables, allowing host systems to tune sensitivity, gesture, and filtering parameters through firmware objects rather than external components. This reduces the bill of materials and enables self-capacitance and mutual-capacitance scanning strategies suited to larger displays where sensor parasitic capacitance is significant. Typical applications include industrial HMI touch panels up to 17.3 inches, interactive kiosks and point-of-information terminals, and embedded displays in appliances, test equipment, and commercial control interfaces where robust multi-touch performance and ESD resilience matter. When designing with this device, verify the package outline, supply voltage, and interface configuration directly against the manufacturer datasheet before footprint sign-off, and budget for the tuning workflow using Microchip maXTouch development tooling during panel bring-up. This page synthesizes distributor stock listings, family cross-references, and design guidance for the ATMXT3432S-M-CCU that is not consolidated on the manufacturer product page alone.