mpr084 Freescale Semiconductor, Inc, mpr084 Datasheet

mpr084

Manufacturer Part Number

mpr084

Description

Proximity Capacitive Touch Sensor Controller

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.MPR084.pdf (40 pages)

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Technical Data

Product Preview

Proximity Capacitive Touch

Sensor Controller

MPR084 OVERVIEW

Capacitive Touch Sensor Controller, optimized to manage an 8-touch pad

capacitive array. The device can accommodate a wide range of

implementations through 3 output mechanisms, and many configurable

options.

Features

•

Implementations

•

Typical Applications

•

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

discontinue this product without notice.

Device Name

MPR084EJ

MPR084Q

The MPR084 is an Inter-Integrated Circuit Communication (I

1.8 V to 3.6 V operation

41 µA average supply current with 1 s response time

2 µA low Standby Current

Variable low power mode response time (32 ms – 4 s)

Rejects unwanted multi-key detections from EMI events such as PA

bursts or user handling

Ongoing pad analysis and detection is not reset by EMI events

Data is buffered in 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 touched pad position is always available on demand for

polling-based systems

Sounder output can be enabled to generate key-click sound when pad

is touched

Two hardware selectable I

single I

Configurable real-time auto calibration

5 mm x 5 mm x 1 mm 16 lead QFN package

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

Control Panels

Switch Replacements

Touch Pads

Appliances

PC Peripherals

Access Controls

MP3 Players

Remote Controls

Mobile Phones

C bus

Temperature Range

-40C to +85C

ORDERING INFORMATION

C addresses allowing two devices on a

(16-Lead TSSOP)

(16-Lead QFN)

Case Number

1679

948F

C) driven

Touch Pads

8-pads

SOUNDER

ATTN

IRQ

VDD

VSS

Figure 1. Pin Connections

IRQ

VDD

VSS

SDA

SCL

AD0

Sensor Controller

Capacitive Touch

16-LEAD TSSOP

MPR084

Bottom View

16-LEAD QFN

CASE 1679

CASE 948F

Top View

MPR084

Rev 6, 5/2010

MPR084

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