mXT448UD-CCUBHA1 1.0 maXTouch 448-node Touchscreen Controller Functional Safety 10 mm glass (or 5 mm PMMA) with bare finger (dependent on sensor size, touch size, configuration UL/IEC 60730 Class B support and stack-up) Self diagnostics at power-on and as periodic tests 6 mm glass (or 3 mm PMMA) with multi-finger 5 mm during operation glove (2.7 mm PMMA equivalent) (dependent on Heartbeat (alive) signal output to host sensor size, touch size, configuration and stack-up) Support for non-rectangular sensor designs (for maXTouch Adaptive Sensing Technology example, circular, rounded or with cutouts) Up to 32 X (transmit) lines and 20 Y (receive) lines for use by a touchscreen and/or key array (see Touch Performance Section 4.3 Permitted Configurations) Moisture/Water Compensation A maximum of 448 nodes can be allocated to the - No false touch with condensation or water drop touch sensor up to 22 mm diameter Touchscreen size of 8.3 inches (16:9 aspect ratio), - One-finger tracking with condensation or water assuming a sensor electrode pitch of 6.5 mm. Other drop up to 22 mm diameter sizes are possible with different electrode pitches and Mutual capacitance and self capacitance appropriate sensor material measurements supported for robust touch detection Multiple touch support with up to 16 concurrent P2P mutual capacitance measurements supported for touches tracked in real time extra sensitive multi-touch sensing Keys Noise suppression technology to combat ambient and power-line noise Up to 32 nodes can be allocated as mutual between 1 Hz and 1 kHz sinusoidal - Up to 240 V PP capacitance sensor keys in addition to the waveform (no touches) touchscreen, defined as 1 key array (subject to - IEC 61000-4-6, 10 Vrms, Class A (normal touch availability of X and Y lines and other configurations) operation) conducted noise immunity Support for up to 3 mutual capacitance Generic Keys as an alternative to the touchscreen key array Stylus Support (subject to other configurations) - Supports passive stylus with 1.5 mm contact Adjacent Key Suppression (AKS) technology is diameter, subject to configuration, stack-up, and supported for false key touch prevention sensor design Burst Frequency Touch Sensor Technology - Flexible and dynamic Tx burst frequency selection Discrete/out-cell support including glass and PET film- to reduce EMC disturbance based sensors - Configurable Tx waveform shaping to reduce On-cell/touch-on display support including TFT, LCD emissions (ITPS, IPS) and OLED Scan Speed Synchronization with display refresh timing capability - Typical report rate for 10 touches 90 Hz (subject Support for standard (for example, Diamond) and to configuration) proprietary sensor patterns (review of designs by - Initial touch latency <25 ms for first touch from idle Microchip or a Microchip-qualified touch sensor (subject to configuration) module partner is recommended) - Configurable to allow for power and speed optimization Front Panel Material and Design Works with PET or glass, including curved profiles On-chip Gestures (configuration and stack-up to be approved by Reports one-touch and two-touch gestures Microchip or a Microchip-qualified touch sensor module partner) 2021 Microchip Technology Inc. and its subsidiaries DS40002352A-page 1 mXT448UD-CCUBHA1 1.0 Enhanced Algorithms Lens bending algorithms to remove display noise Touch suppression algorithms to remove unintentional large touches, such as palm Palm Recovery Algorithm for quick restoration to normal state Data Store Up to 64 bytes of users custom data (not CRC checksummed) Power Saving Programmable timeout for automatic transition from Active to Idle state Pipelined analog sensing detection and digital processing to optimize system power efficiency Application Interfaces 2 I C client interface for main communication with the device, 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) Optional secondary SPI interface for separate messaging (up to 8 MHz) Two separate interrupts to indicate when messages are available on the corresponding interfaces Additional Hardware Debug Interface to read the raw data for tuning and debugging purposes Power Supply Digital (Vdd) 3.3V nominal Digital I/O (VddIO) 3.3V nominal Analog (AVdd) 3.3V nominal High voltage internal X line drive (XVdd) 6.6V or 9.9V with internal voltage pump Package 88-ball UFBGA 6 6 0.6 mm, 0.5 mm pitch Operating Temperature 40 C to +105C Design Services Review of device configuration, stack-up and sensor patterns DS40002352A-page 2 2021 Microchip Technology Inc. and its subsidiaries