MPR081

Rev 0, 06/2007

Freescale Semiconductor

Technical Data

© Freescale Semiconductor, Inc., 2007. All rights reserved.

Touch Pad Controller

The MPR081 is a user interface controller which manages a 16-position rotary

which configures the operation, and an interrupt to advise the host of status

changes.

The interrupt output, IRQ, indicates that rotary status has changed since the

MPR081 was last read. The maximum interrupt frequency can be limited to

sacrifice system response time in favor of power consumption for systems that

wake up out of sleep to respond to interrupts.

Features

•

1.8 V to 3.6 V operation

•

150 µA average supply current (all touch pads being monitored)

•

1 µA standby current

•

Supports a 16-position rotary interface

•

Proprietary false touch rejection technology

•

Ongoing pad analysis and detection not reset by EMI events

•

Rotary data changes are delivered from a FIFO for shortest access time

•IRQ output advises when FIFO has data

•

System can set interrupt behavior as immediate after event, or program a

minimum time between successive interrupts

•

Current rotary position is always available on demand for polling-based

systems

•

Sounder drive provides audible feedback to simulate mechanical key clicks

•

•

16-pin QFN and TSSOP packages

•

-40°C to +85°C operating temperature range

Implementations

•

Control Panels

•

Switch Replacements

•

Rotary and Linear Sliders

•

Touch Pads

Typical Applications

•

Appliances

•

PC Peripherals

•

Access Controls

•

MP3 Players

•

Remote Controls

•

Mobile Phones

ORDERING INFORMATION

Device Name

Temperature

Range

Case

Number

Rotary

Slider

MPR081Q

-40

°C to +85°C

1679

(16-Lead QFN)

16-Positions

MPR081EJ

948F

(16-Lead TSSOP)

MPR081

Touch Pad Controller

16-LEAD TSSOP

CASE 948F

Top View

Figure 1. Pin Connections

Bottom View

RS

RSW

RW

RNW

VDD

VSS

RST

IRQ

MPR081Q

16-LEAD QFN

CASE 1679

RN

RNE

RE

RSE

RS

RSW

RW

RNW

VDD

VSS

SCL

SDA

AD0

SOUNDER

RST

IRQ

MPR081EJ