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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Freescale Semiconductor
Technical Data
© Freescale Semiconductor, Inc., 2007–2010. All rights reserved.
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
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Implementations
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Typical Applications
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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
2
C bus
Temperature Range
-40C to +85C
ORDERING INFORMATION
2
C addresses allowing two devices on a
(16-Lead TSSOP)
(16-Lead QFN)
Case Number
1679
948F
2
C) driven
Touch Pads
8-pads
SOUNDER
ATTN
ATTN
IRQ
VDD
VSS
Figure 1. Pin Connections
IRQ
VDD
VSS
SDA
SCL
AD0
Sensor Controller
Capacitive Touch
1
2
3
4
16-LEAD TSSOP
1
2
3
4
5
6
7
8
MPR084
Bottom View
16-LEAD QFN
CASE 1679
CASE 948F
16
Top View
5
MPR084
MPR084
15
6
14
7
Rev 6, 5/2010
13
8
12
11
10
9
16
15
14
13
12
11
10
9
MPR084
E5
E6
E7
E8
E1
E2
E3
E4
E5
E6
E7
E8