ATMXT336S-CCUR - 336-Node maXTouch Touchscreen IC | Microchip

Premium Smartphones

The ATMXT336S-CCUR is purpose-built for highest-performance smart phones, where its 336-node mutual-capacitance sensing array delivers accurate multi-touch tracking on dense ITO sensor patterns. Its 2.0 mm passive stylus support enables handwriting and annotation features that flagship devices demand, while Microchip's patented capacitive touch technology maintains accuracy in challenging conditions. In the signal chain, the controller sits behind the display's touch sensor stack, scanning electrodes and streaming coordinates to the application processor over I2C. The maXFusion sensor hub integration further reduces BOM cost by fusing accelerometer, gyroscope, and magnetometer data in-chip, consolidating touch and motion processing into one 64-pin TQFN device.

Tablets and Large-Format Mobile Devices

Tablet-sized touch sensors require high node counts to preserve linearity and reporting accuracy across large active areas, and the ATMXT336S-CCUR's 336 sensing nodes directly address this requirement. The controller supports fine 2.0 mm passive stylus input, which is increasingly expected on tablets for note-taking and creative workflows. Its I2C host interface integrates cleanly with standard tablet application processors, and the 64-pin TQFN package suits the dense board layouts typical of thin mobile form factors. When combined with maXFusion sensor hub technology, the same device also processes orientation and inclination data for screen rotation and stylus tilt-aware features, reducing external component count and power spent on separate sensor hub ICs.

Sensor Hub Fusion for Gaming and VR

The newest maXTouch members, including the mXT336S, integrate maXFusion sensor hub technology, which fuses inputs from accelerometers, gyroscopes, and magnetometers in real time. For gaming, augmented reality, and virtual reality headsets, low-latency fusion of touch input with head or controller motion data (location, orientation, direction, inclination) directly improves user experience and reduces motion-to-photon error contributions from the host processor. The ATMXT336S-CCUR performs this fusion on-chip and reports results over I2C, offloading the application processor. In a VR HMI chain, it functions simultaneously as a 336-node touch controller for panel or touchpad input and as the motion sensor hub, consolidating two subsystems into one 64-pin TQFN package.

Industrial Human-Machine Interfaces

Industrial HMI panels benefit from projected-capacitive touch controllers that provide reliable multi-touch and stylus-grade precision. While the mXT336S targets smartphones primarily, its 336-node architecture and I2C interface map naturally onto mid-size industrial touch panels where fine-pitch passive stylus entry (2.0 mm tip) supports data entry on schematics or forms. The maXFusion sensor hub can fuse orientation data for panel mount compensation in mobile industrial equipment. Designers must verify the operating temperature range and supply specifications against the manufacturer datasheet before using the part in harsh environments, as industrial qualification differs from consumer mobile qualification. Configuration files must be matched to the chosen sensor stack for accurate edge and palm rejection behavior.

Navigation and Location-Aware Devices

maXFusion technology in the ATMXT336S-CCUR processes location, orientation, direction, and inclination data from fused accelerometer, gyroscope, and magnetometer inputs, making it a strong fit for navigation-centric products such as portable navigators, handheld terminals, and automotive-grade aftermarket navigation units. By performing sensor fusion on the touch controller die, the design saves a separate sensor hub IC and reduces I2C bus contention with the main CPU. The 336-node touch engine simultaneously supports responsive map gestures and 2.0 mm passive stylus route annotation. Integration effort centers on firmware configuration matching to the sensor stack and correct interrupt wiring on the I2C host interface, as detailed in the manufacturer datasheet and reference designs.

Point-of-Sale and Signature Capture Terminals

Point-of-sale terminals and signature-capture displays require accurate fine-line stylus capture for electronic signatures, and the ATMXT336S-CCUR's support for a 2.0 mm passive stylus meets the resolution expectations of signature-quality capture without needing an active stylus. The 336-node sensor grid delivers uniform accuracy across the signing area, while multi-touch capability supports modern gesture-driven checkout interfaces. The I2C host interface connects easily to POS main controllers, and the compact 64-pin TQFN package fits within slim terminal housings. Because these terminals often run continuously, designers should follow the datasheet's configuration guidance for scan intervals and idle modes to balance touch latency against system power draw.