مدار مجتمع (آی سی) آی‌سی جمع‌آوری داده کنترلر صفحهٔ لمسی

Product Attributes

Introduction

The maXTouch 144-node touchscreen controller uses maXTouch adaptive sensing technology, supporting up to 12 X (transmit) lines and 12 Y (receive) lines, with a maximum of 144 nodes assignable to the touchscreen. It supports a 3.3-inch touchscreen (1:1 aspect ratio) with multi-touch capability, tracking up to 5 concurrent touches in real time. Compatible with discrete/overlay touch sensors for PET or glass panels. Features multiple touch performance optimizations including moisture/water compensation, glove touch support, and noise suppression. Incorporates on-chip gesture recognition and button functions with enhanced algorithms, product data storage, multiple application interfaces and power supply options, and an operating temperature range of -40°C to +85°C.

Features

• Up to 12 X (transmit) lines and 12 Y (receive) lines
• Up to 144 nodes assignable to touchscreen
• Touchscreen size 3.3 inches (1:1 aspect ratio) with 5mm sensor electrode pitch; other sizes supported with different electrode pitches and suitable sensor materials
• Up to 5 concurrent touch real-time tracking
• Supports discrete/externally overlaid touch sensors, including glass- and PET film-based sensors
• Supports standard (e.g., diamond) and proprietary sensor patterns
• Compatible with PET or glass panels, including curved panels
• Glass thickness 0.4mm to 4.5mm, plastic thickness 0.2mm to 2.2mm
• Water/moisture compensation; no false triggers from condensation or water droplets up to 22mm diameter, with single-finger tracking
• Supports multi-finger glove touch up to 1.5mm thickness and single-finger glove touch up to 5mm thickness
• Supports mutual capacitance and self-capacitance measurements for reliable touch detection
• Noise suppression technology for ambient, charger, and power line noise rejection
• Scan speed: single-finger report rate up to 450Hz, 5-touch typical report rate ≥150Hz, first-touch initial touch latency <11ms; configurable to optimize power and speed
• Reports single-touch and dual-touch gestures; supports wake/unlock gestures including symbol recognition
• Up to 8 nodes assignable as mutual capacitance sensor buttons with Adjacent Key Suppression (AKS) to prevent false triggers
• Lens bending algorithm for display noise removal; touch suppression algorithm for unintended large touches (e.g., palm); palm recovery algorithm for fast return to normal state
• Up to 60 bytes of user-defined data storable during production
• Programmable timeout for automatic transition from active to idle state
• Pipelined analog sensing detection and digital processing for optimized system power efficiency
• Low-power idle mode reduces measurements to the minimum required for touch detection, upon which the device enters active mode for full measurement and touch processing
• I²C slave support: standard mode (up to 100kHz), fast mode (up to 400kHz)
• Interrupt indication message available
• SPI debug interface for real-time raw data readout for tuning and debugging
• Digital supply (Vdd) nominal 3.3V, digital I/O (VddIO) nominal 3.3V
• 38-pin XQFN package, 4×4×0.35mm, 0.35mm pin pitch
• Operating temperature range -40°C to +85°C

Applications

• Consumer Electronics
• Industrial Control
• Medical Devices
• Automotive Electronics
• Smart Home