mXT449T-AT/mXT449T-AB 1.0 maXTouch 448-node Touchscreen Controller Glove Support maXTouch Adaptive Sensing Touchscreen - Multiple-finger glove touches up to 1.5 mm Technology thickness (subject to stack-up design) Up to 32 X (transmit) lines and 20 Y (receive) lines - Single-finger glove touch up to 5 mm thickness A maximum of 448 nodes can be allocated to the (subject to stack-up design) touchscreen Mutual capacitance and self capacitance Touchscreen size 7.62 inches (16:9 aspect ratio), measurements supported for robust touch detection assuming a sensor electrode pitch of 6 mm. Other Noise suppression technology to combat ambient and sizes may be possible with different electrode pitches power-line noise and appropriate sensor material - Up to 240 Vpp between 1 Hz and 1 kHz Multiple touch support with up to 16 concurrent sinusoidal waveform touches tracked in real time - Up to 20 Vpp between 1 kHz and 1 MHz Automotive Applications sinusoidal waveform Scan Speed AEC-Q100 Qualified - Up to 190 Hz one finger reporting rate (subject to Developed following Automotive SPICE Level 3 configuration) certified processes - Typical report rate for 10 touches 60 Hz (subject CISPR-25 compliant (for both mutual and self to configuration) capacitance measurements) - Initial touch latency <25 ms for first touch from idle Touch Sensor Technology (subject to configuration) - Configurable to allow for power and speed Discrete/out-cell support including glass and PET film- optimization based sensors On-cell/touch-on display support including TFT, IPS On-chip Gestures and OLED Reports one-touch and two-touch gestures Support for standard (for example, Diamond) and proprietary sensor patterns (review of designs by Keys Microchip recommended) Up to 32 nodes can be allocated as mutual Front Panel Material capacitance sensor keys (subject to other configurations) Works with PET or glass, including curved profiles Adjacent Key Suppression (AKS) technology is (configuration and stack-up to be approved by supported for false key touch prevention Microchip) Glass 0.5 mm to 2.0 mm (dependent on screen size, Enhanced Algorithms touch size, configuration and stack-up) Lens bending algorithms to remove display noise Plastic 0.2 mm to 3.0 mm (dependent on screen size, touch size, configuration and stack-up) Touch suppression algorithms to remove unintentional large touches, such as palm Touch Performance Palm Recovery Algorithm for quick restoration to normal state Moisture/Water Compensation - No false touch with condensation or water drop up Product Data Store Area to 22 mm diameter Up to 60 bytes of user-defined data can be stored - One-finger tracking with condensation or water during production drop up to 22 mm diameter 2018 Microchip Technology Inc. DS40001993A-page 1 MXT449T-AT/MXT449T-AB 1.0 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 with support for Standard mode (up to 100 kHz), Fast mode (up to 400 kHz), Fast-mode Plus (up to 1 MHz), High-speed mode (up to 3.4 MHz) SPI slave interface (up to 8 MHz) 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 (XVdd = Vdd if voltage pump not used) Package 100-pin TQFP 14 14 1 mm, 0.5 mm pitch Operating Temperature mXT449T-AT: 40C to +85C (Grade 3) mXT449T-AB: 40C to +105C (Grade 2) Design Services Review of device configuration, stack-up and sensor patterns Custom firmware versions can be considered Contact your Microchip representative for more information DS40001993A-page 2 2018 Microchip Technology Inc.