Capacitive Touch Sensing Mixed-Signal Microcontrollers
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MSP430FR2676, MSP430FR2675
SLASEO...
Description
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MSP430FR2676, MSP430FR2675
SLASEO5A – MARCH 2019 – REVISED APRIL 2019
MSP430FR267x Capacitive Touch Sensing Mixed-Signal Microcontrollers
1 Device Overview
1.1 Features
1
CapTIvate™ technology – capacitive touch – Performance – Fast electrode scanning with four simultaneous scans – Proximity sensing – Reliability – Increased immunity to power line, RF, and other environmental noise – Built-in spread spectrum, automatic tuning, noise filtering, and debouncing algorithms – Enable reliable touch solutions with 10-V RMS common-mode noise, 4-kV electrical fast transients, and 15-kV electrostatic discharge, allowing for IEC‑61000-4-6, IEC61000-4-4, and IEC‑61000-4-2 compliance – Reduced RF emissions to simplify electrical designs – Support for metal touch and water rejection designs – Flexibility – Up to 16 self-capacitance and 64 mutualcapacitance electrodes – Mix and match self- and mutual-capacitive electrodes in the same design – Support multi-touch functionality – Wide range of capacitance detection, wide electrode range of 0 to 300 pF – Low power – <5 µA wake-on-touch with four sensors – Wake-on-touch state machine allows electrode scanning while CPU sleeps – Hardware acceleration for environmental compensation, filtering, and threshold detection – Ease of use – CapTIvate Design Center PC GUI lets engineers design and tune capacitive buttons in real time without having to write code – C...
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