mXT640U 1.1 maXTouch 640-node Touchscreen Controller Noise suppression technology to combat ambient, maXTouch Adaptive Sensing Touchscreen charger noise, and power-line noise Technology - Up to 240 Vpp between 1 Hz and 1 kHz Up to 32 X (transmit) lines and 20 Y (receive) lines sinusoidal waveform A maximum of 640 nodes can be allocated to the - Up to 20 Vpp between 1 kHz and 1 MHz touchscreen sinusoidal waveform Touchscreen size 8.17 inches (16:10 aspect ratio), Stylus Support assuming a sensor electrode pitch of 5.5 mm. Other - Supports passive stylus with 1 mm contact sizes may be possible with different electrode pitches diameter, subject to configuration, stack up, and and appropriate sensor material sensor design Multiple touch support with up to 16 concurrent Scan Speed touches tracked in real time - Up to 250 Hz one finger reporting rate, subject to Dual-boot OS support for Microsoft Windows and configuration Android - Typical report rate for 10 touches 100 Hz (subject to configuration) Touch Sensor Technology - Initial touch latency <20 ms for first touch from Discrete/out-cell support including glass and PET film- idle, subject to configuration based sensors - Configurable to allow for power and speed On-cell/touch-on display support including TFT, IPS optimization and OLED Synchronization with display refresh timing capability On-chip Gestures Support for standard (for example, Diamond) and Supports wake up/unlock gestures, including symbol proprietary sensor patterns (review of designs by recognition Microchip recommended) Keys Front Panel Material Up to 32 nodes can be allocated as mutual Works with PET or glass, including curved profiles capacitance sensor keys (subject to other (configuration and stack-up to be approved by configurations) Microchip) Support for 3 Generic Keys in addition to the Glass 0.4 mm to 4.5 mm, dependent on screen size, touchscreen array (subject to other configurations) touch size and stack-up Adjacent Key Suppression (AKS) technology is Plastic 0.2 mm to 2.2 mm, dependent on screen size, supported for false key touch prevention touch size and stack-up Enhanced Algorithms Touch Performance Lens bending algorithms to remove display noise Moisture/Water Compensation Touch suppression algorithms to remove unintentional - No false touch with condensation or water drop up large touches, such as palm to 22 mm diameter Palm Recovery Algorithm for quick restoration to - One-finger tracking with condensation or water normal state drop up to 22 mm diameter Glove Support Product Data Store Area - Multiple-finger glove touches up to 1.5 mm Up to 32 bytes of user-defined data can be stored thickness (subject to stack-up design) during production - Single-finger glove touch up to 5 mm thickness (subject to stack-up design) Mutual capacitance and self capacitance measurements supported for robust touch detection 2017 Microchip Technology Inc. DS400001941A-page 1 MXT640U 1.1 Power Saving Programmable timeout for automatic transition from active to idle states Pipelined analog sensing detection and digital processing to optimize system power efficiency Application Interfaces 2 I C slave mode: Standard/Fast mode 400 kHz, Fast-mode Plus 1 MHz, High-speed mode up to 3.4 MHz 2 HID-I C interface for Microsoft Windows 8.x and later versions Interrupt to indicate when a message is available SPI Debug Interface to read the real-time raw data for tuning and debugging purposes Power Supply Digital (Vdd) 3.3 V nominal Digital I/O (VddIO) 3.3 V nominal Analog (AVdd) 3.3 V nominal High voltage internal X line drive (XVdd) 6.6 V with internal voltage pump High voltage internal X line drive (XVdd) 9.9 V with internal voltage pump Packages 88-ball UFBGA 6 6 0.6 mm, 0.5 mm pitch 88-ball X1FBGA 6 6 0.45 mm, 0.5 mm pitch Operating Temperature 40 C to +85C DS400001941A-page 2 2017 Microchip Technology Inc.