MICROCHIP ATMXT1067TD-ABRI2CVAO

mXT1067TD-AT/mXT1067TD-AB 1.0 employs a unique charge transfer acquisition engine to implement Microchip's patented capacitive sensing method. Combined with an advanced CPU, the complete touchscreen sensing solution is capable of measuring, classifying, and tracking multiple finger touches with high accuracy and minimal response time. The mXT1067TD-AT/mXT1067TD-AB 1.0 supports both mutual capacitance and self-capacitance measurements, where self-capacitance measurements are used to augment mutual capacitance measurements to produce reliable touch information.

• Up to 41 X (transmit) lines and 26 Y (receive) lines for touchscreen and keys
• Up to 1066 nodes assignable to touchscreen
• Assumes sensor electrode pitch of 5.5mm and touchscreen size of 10.51 inches (16:10 aspect ratio); other sizes achievable with different electrode pitches and appropriate sensor materials
• Multi-touch support with real-time tracking of up to 16 simultaneous touches
• Up to 16 nodes assignable as mutual capacitance sensor keys (depending on other configurations)
• Adjacent Key Suppression (AKS) to prevent accidental key activation
• Discrete/overlay touch support, including glass- and PET film-based sensors
• In-cell/touch display support, including TFT, IPS, and OLED
• Synchronization capability with display refresh timing
• Standard (e.g., diamond) and proprietary sensor patterns supported (design review recommended by Microchip or a Microchip-certified touch sensor module partner)
• Compatible with PET or glass, including curved form factors (configuration and stack-up subject to approval by Microchip or a Microchip-certified touch sensor module partner)
• Glass thickness 0.4mm to 4mm (depending on screen size, touch size, configuration, and stack-up)
• Plastic thickness 0.2mm to 3mm (depending on screen size, touch size, configuration, and stack-up)
• Moisture/water compensation
• No false touches from condensation or water drops up to 22mm in diameter
• Single-finger tracking under condensation or water drops up to 22mm in diameter
• Glove touch support up to 5mm thickness (depending on stack-up design)
• Mutual and self-capacitance measurement for reliable touch detection
• Point-to-point mutual capacitance measurement for ultra-sensitive multi-touch sensing
• Noise suppression against environmental and power line noise
• Maximum 240Vₚ₋ₚ for 1Hz to 1kHz sinusoidal waveforms
• Maximum 20Vₚ₋ₚ for 1kHz to 1MHz sinusoidal waveforms
• Flexible dynamic transmit burst frequency selection to reduce EMC interference
• Controlled transmit burst frequency drift across process and temperature range
• Configurable transmit waveform shaping to reduce emissions
• Single-finger report rate up to 112Hz (depending on configuration)
• Typical report rate for 10 touches ≥85Hz (depending on configuration)
• Initial touch latency from idle state <20ms (depending on configuration)
• Configurable for power and speed optimization
• Touch panel fault detection
• Runtime automatic touch sensor diagnostics supporting safety-critical functions
• Diagnostic reporting via dedicated output pin or standard object protocol messages
• Configurable test limits
• Single-touch and dual-touch gesture reporting
• Lens bending algorithm to eliminate display noise
• Touch suppression algorithm to reject unintentional large touches such as palm touches
• Palm recovery algorithm for rapid return to normal state
• Programmable timeout for automatic transition from active to idle state
• Pipelined analog sense acquisition and digital processing for optimized system power efficiency
• I²C slave supporting Standard Mode (up to 100kHz), Fast Mode (up to 400kHz), and Fast Mode Plus (up to 1MHz)
• Interrupt signal indicating message availability
• Additional SPI debug interface for raw data read-out for tuning and debugging
• Digital supply (Vdd) nominal 3.3V
• Digital I/O supply (VddIO) nominal 3.3V
• Analog supply (AVdd) nominal 3.3V
• High-voltage internal X-line driver (XVdd) at 6.6V with internal charge pump (XVdd connected to Vdd if charge pump not used)
• 128-pin TQFP package, 14×14×1mm, 0.4mm lead pitch
• mXT1067TD-AT operating temperature range: -40°C to +85°C (Grade 3)
• mXT1067TD-AB operating temperature range: -40°C to +105°C (Grade 2)

• Automotive infotainment systems
• Automotive instrument clusters
• Automotive navigation systems
• Automotive HVAC control
• Automotive seat adjustment