MPR031 Datasheet, PDF (1/32 Pages) Freescale Semiconductor, Inc – Proximity Capacitive Touch Sensor Controller

Freescale Semiconductor
Technical Data
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Proximity Capacitive Touch
Sensor Controller
MPR03X OVERVIEW
The MPR03X is an Inter-Integrated Circuit Communication (I²C)
driven Capacitive Touch Sensor Controller, 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.
Features
• 6 µA supply current with two electrodes being monitored with
32 ms response time and IRQ enabled
• Compact 2 x 2 x 0.65 mm 8-lead µDFN package
• Supports up to 3 touch pads
• Only one external component needed
• Intelligent touch detection capacity
• 4 µA maximum shutdown current
• 1.71 V to 2.75 V operation
• Threshold based detection with hysteresis
• I²C interface, with optional IRQ
• Multiple devices in a system allow for up to 6 electrodes (need
MPR032 with second I²C address)
• -40°C to +85°C operating temperature range
Implementations
• Switch Replacements
• Touch Pads
Typical Applications
• PC Peripherals
• MP3 Players
• Remote Controls
• Mobile Phones
• Lighting Controls
MPR03X
Rev 5, 9/2009
MPR031
MPR032
Capacitive Touch
Sensor Controller
Bottom View
8-PIN μDFN
CASE 1944
Top View
SCL ¹
SDA 2
V_SS 3
V_{DD 4}
8 IRQ/ELE2
MPR03X ^{7 ELE1}
6 ELE0
5 REXT
Figure 1. Pin Connections
VDD
I²C Serial
Interface
INT
SCL
SDA
ELE0
1
MPR03X
REXT
ELE1
2
75k
VSS
VSS
MPR03X with 2 Electrodes and 2 Pads
Device Name
MPR031EPR2
MPR032EPR2
Temperature Range
-40°C to +85°C
-40°C to +85°C
ORDERING INFORMATION
Case Number
Touch Pads
1944 (8-Pin μDFN)
1944 (8-Pin μDFN)
3-pads
3-pads
I²C Address
0x4A
0x4B
Shipping
Tape and Reel
Tape and Reel
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discontinue this product without notice.
© Freescale Semiconductor, Inc., 2008, 2009. All rights reserved.