ATMXT224S-CCUR - 224-Node Touchscreen Controller | Microchip
MPN: ATMXT224S-CCUR β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.58 | $1.58 |
| 10 | $1.45 | $14.50 |
| 100 | $1.32 | $132.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $1.1 | $1,100.00 |
ATMXT224S-CCUR Overview
A capacitive touch screen controller is an integrated circuit that scans a grid of electrodes embedded in a touch panel, measures mutual capacitance changes caused by finger or stylus contact, and applies proprietary algorithms to convert raw signals into accurate touch coordinates. Within the signal-chain hierarchy, the touch controller sits between the touch sensor (passive ITO electrode matrix) and the host application processor, communicating touch data over an I2C or SPI interface.
Key features of the ATMXT224S include 224 sensing nodes supporting touch panels up to roughly 8-9 inches, Microchip's patented capacitive touch technology, and passive stylus support at 1.5 mm tip width. These capabilities enable slim bezels, accurate handwriting input, and multi-touch performance required by premium mobile devices.
Technically, the maXTouch S-series integrates a dedicated touch-processing engine with Microchip's noise-suppression algorithms, providing immunity against charger and display noise - a critical requirement as displays and charging circuits inject common-mode interference into touch panels.
Typical applications include smartphones, tablet touch panels, portable media players, and industrial human-machine interfaces (HMI) that require multi-touch and stylus input.
Important design consideration: Microchip's official product page for ATmXT224S states that the recommended alternative touch controller is the ATMXT336U, and the mXT224S is being superseded; new designs should evaluate the successor family. Firmware/configuration data is programmed into the maXTouch controller at production, so design-in requires Microchip's maXTouch development tools.
This page synthesizes verified distributor pricing, lifecycle status, and alternative controller guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATMXT224S-CCUR 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:
ATMXT224T-MAUR
β Drop-Inπ Reference alternative (not in catalog)
ATMXT336U
β Drop-Inπ Reference alternative (not in catalog)
ATMXT224S-CCUR043
β Drop-Inπ Reference alternative (not in catalog)
ATMXT224S-CCUR Maximum Ratings & Electrical Characteristics
| Product Type | Capacitive Touch Screen Controller |
| Product Family | maXTouch S-series (mXT224S) |
| Number of Sensing Nodes | 224 |
| Stylus Support | 1.5 mm passive stylus |
| Touch Technology | Mutual capacitive |
| Manufacturer | Microchip Technology |
| Applications | Smartphones, tablets, portable devices |
| Mounting Type | Surface Mount |
| Category | Integrated Circuits (ICs) - Sensor, Capacitive Touch |
| Recommended Successor | ATMXT336U |
ATMXT224S-CCUR standard Pin Configuration Guide
Pin configuration for ATMXT224S-CCUR (standard package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATMXT224S-CCUR.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMXT224S-CCUR is suitable for 6 applications: Smartphone Touch Panels, Tablet and Phablet Touch Controllers, Portable Media Players, Industrial HMI Touch Panels, Medical Device Touch Interfaces, Aftermarket Repair and Service Replacement.
Smartphone Touch Panels
The ATMXT224S was purpose-built for high-performance smartphone touchscreens, which is exactly the use case Microchip cites on its product page. Its 224 mutual-capacitance nodes cover the electrode matrix of 3.5-5 inch class displays, while Microchip's patented processing engine decodes multiple simultaneous finger touches with fast scan rates and low latency. The 1.5 mm passive stylus support enables handwriting notes on a slim mobile device without battery-powered pen hardware. Its charger-noise immunity algorithms maintain touch accuracy while the phone charges from noisy USB adapters - a common failure point for lesser controllers. Because the mXT224S is being superseded by the ATMXT336U, new smartphone programs should design in the successor; the ATMXT224S-CCUR primarily serves service and repair channels maintaining existing handsets.
Recommended
Tablet and Phablet Touch Controllers
Small tablets and phablets in the 6-9 inch class can be driven by the ATMXT224S because its 224 sensing nodes scale to the larger electrode grid, and the S-series signal processing maintains linearity across the expanded panel. The controller reports filtered touch data to the host over its serial interface, offloading capacitive scanning from the main application processor and saving power through autonomous touch sensing with wake-on-touch behavior. Passive stylus support at 1.5 mm tip width suits note-taking tablets. Designers must allocate panel stack-up geometry (sensor pitch, cover-glass thickness) per maXTouch design guidelines to preserve signal-to-noise ratio. For new tablet designs, evaluate the ATMXT336U successor family, since Microchip has recommended migration away from the mXT224S.
Recommended
Portable Media Players
Portable media players benefit from the ATMXT224S's combination of multi-touch gesture support and low-power autonomous scanning. The 224-node array handles the compact capacitive sensor of a handheld device, while microcontroller-based wake-on-touch lets the device sleep between interactions, extending battery life during music or video playback. The controller's noise immunity prevents display driver interference from generating phantom touches when content is rendered on-screen. Because the part is packaged in a compact surface-mount variant (CCUR), it fits the dense PCB real estate typical of portable players. Service inventories for legacy media players remain the primary demand; new portable designs should use Microchip's current maXTouch lineup such as the ATMXT336U.
Recommended
Industrial HMI Touch Panels
Industrial human-machine interfaces adopt capacitive touch for modern operator terminals, and the ATMXT224S-CCUR fits panel controllers in the 4-7 inch class with multi-touch pinch-zoom and passive stylus data entry. Its charger and display noise-suppression firmware is valuable on factory floors where switching power supplies and variable-frequency drives inject broadband interference into unprotected touch sensors. The controller operates autonomously, freeing the host PLC or embedded CPU for control tasks while reporting touch events only. For harsh environments, designers should verify the temperature rating and panel stack-up against the datasheet. Because the mXT224S is superseded, long-lifetime industrial products should qualify the ATMXT336U to secure supply over a multi-year deployment cycle.
Recommended
Medical Device Touch Interfaces
Portable diagnostic and monitoring devices increasingly use capacitive touch interfaces, and the ATMXT224S provides the multi-touch accuracy and 1.5 mm passive stylus support needed for precise data entry on compact medical handhelds. The controller's noise-suppression algorithms keep touch data stable alongside displays and wireless modules within the device, and autonomous sensing reduces host firmware complexity for resource-constrained medical electronics. Designers must review the datasheet temperature and reliability ratings for the intended sterilization or clinical environment and apply Microchip maXTouch design guidelines for cover-glass thickness. For new medical platforms, Microchip recommends the ATMXT336U as the current-generation controller, so the ATMXT224S-CCUR mainly supports sustaining engineering of existing products.
Recommended
Aftermarket Repair and Service Replacement
A major ongoing use of ATMXT224S-CCUR stock is component-level repair of legacy smartphones, tablets, and HMIs that shipped with the mXT224S. Repair depots order the CCUR reel variant to replace damaged touch controllers on boards that cannot accept a different footprint or firmware image. Because the maXTouch configuration is factory-programmed, matching the original firmware variant (such as the -CCUR043 coded parts seen in distribution) matters for restoring calibrated touch behavior. Distributors like DigiKey, LCSC, and independent specialists such as Microchip USA supply these repair quantities. Buyers should verify date codes and firmware configuration compatibility, and plan transition to ATMXT336U-class parts as mXT224S inventory is depleted.
Recommended
Recommended Products Summary
Engineering reference data for ATMXT224S-CCUR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMXT224T-MAUR | ATMXT336U | ATMXT224S-CCUR043 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Lifecycle Status | Superseded (EOL path; ATMXT336U recommended) | Legacy | Active (recommended successor) | Superseded variant |
| Primary Application | Smartphone touch panels | Touch panels (T-series) | Next-gen smartphone/tablet touch panels | Smartphone touch panels (firmware-coded) |
| Touch Technology | Mutual capacitive | Mutual capacitive | Mutual capacitive | Mutual capacitive |
Key Differentiators
- Official manufacturer-designated successor exists (vs ATMXT336U)
- 1.5 mm passive stylus support (vs ATMXT224T-MAUR)
- Firmware-coded variants available for repair matching (vs ATMXT224S-CCUR043)
Design Notes
Do not start new designs with the ATMXT224S: Microchip's official product page explicitly recommends the ATMXT336U as the replacement controller, meaning the mXT224S is on its way out of production. For existing designs, secure lifetime-buy stock early and validate the ATMXT336U migration path (pinout, firmware configuration, panel tuning) before the last purchase window closes.
maXTouch controllers are sensitive to sensor routing: keep drive and sense traces symmetric, follow Microchip's maXTouch sensor design guidelines for electrode pitch and shield rings, and place the controller close to the touch sensor flex tail to minimize trace capacitance mismatch. Charger-noise immunity algorithms assume a properly grounded shield layer; omitting it degrades stylus and wet-finger performance.
Touch noise performance depends heavily on clean analog supply. Provide a dedicated low-noise LDO rail for the maXTouch controller's analog supply, decoupled with local ceramic capacitors at the supply pins, and isolate it from the display's boost converter. Poor supply isolation shows up as erratic touch behavior while charging - one of the most common field issues with capacitive touch designs.
Compliance Information
Compliance data not present in the provided web data. Consult Microchip's official product page or Environmental datasheet for RoHS/REACH status of ATMXT224S-CCUR.
