Datasheet

Overview
Mechanical buttons and switches for
touch user interfaces are becoming a thing
of the past. Proximity capacitive touch
sensors in simple linear or rotational sliders
offer significant advantages for numerous
applications. They are more convenient to
use with no moving parts to wear out, more
energy efficient and are more easily integrated
to create an intelligent system. Freescale’s
MPR031 and MPR032 proximity capacitive
touch sensor controllers are CMOS-based
state machines that simplify designing
numerous touch applications for Bluetooth
®
headsets, mobile phones, multimedia players,
remote controls and other low-power,
handheld, electronic products.
The MPR031 and MPR032 devices have
several implementations to use in your design
including touch pads and switch replacements.
The MPR03x devices control up to three touch
pads. The MPR03x can communicate via the
inter-integrated circuit (I
2
C) protocol and is
optimized to manage two electrodes with
interrupt functionality, or three electrodes with
the interrupt disabled. It can accommodate a
wide range of implementations due to increased
sensitivity and a specialized feature set.
Proximity Capacitive Touch Sensor Controllers
MPR031/2
2- or 3-pad touch sensor controllers
Freescale offers a broad portfolio of proximity
sensors for products ranging from appliance
control panels to portable electronics. Target
markets include consumer, appliance, industrial,
medical and computer peripherals.
MPR031/2 Implementations
• Switchreplacements
• Touchpads
Applications
• PCperipherals
• MP3players
• Remotecontrols
• Mobilephones
• Lightingcontrols
KITMPR03xEVM
Evaluation Kit
DEMOMPR031
Demo Board