MPR03X

Rev 5, 9/2009

Freescale Semiconductor

Technical Data

An Energy Efficient Solution by Freescale

© Freescale Semiconductor, Inc., 2008, 2009. All rights reserved.

This document contains a product under development. Freescale Semiconductor reserves the right to change or

discontinue this product without notice.

Product Preview

Proximity Capacitive Touch

Sensor Controller

MPR03X OVERVIEW

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

•

Multiple devices in a system allow for up to 6 electrodes (need

•

-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

ORDERING INFORMATION

Device Name

Temperature Range

Case Number

Touch Pads

Shipping

MPR031EPR2

-40

°C to +85°C

1944 (8-Pin

μDFN)

3-pads

0x4A

Tape and Reel

MPR032EPR2

-40

°C to +85°C

1944 (8-Pin

μDFN)

3-pads

0x4B

Tape and Reel

MPR031

MPR032

Capacitive Touch

Sensor Controller

Top View

Figure 1. Pin Connections

Bottom View

8-PIN

μDFN

CASE 1944

1

SCL

2

3

8

7

6

5

4

SDA

IRQ/ELE2

ELE1

ELE0

REXT

MPR03X

Interface

I²C Serial

VSS

SDA

SCL

MPR03X

ELE0

ELE1

VDD

INT

1

2

VSS

75k

REXT

MPR03X with 2 Electrodes and 2 Pads