MPR083EJR2 - Freescale Semiconductor

MPR083

Rev 5, 06/2010

Freescale Semiconductor

Technical Data

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

MPR083 OVERVIEW

The MPR083 is an Inter-Integrated Circuit Communication (I2C) driven

Capacitive Touch Sensor Controller, optimized to manage an 8-position

rotary shaped capacitive array. The device can accommodate a wide

range of implementations through 3 output mechanisms, and many

configurable options.

Features

• 1.8 V to 3.6 V operation

• 41 µA average supply current with 1 s response time

• 2 µA 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 minimu m time between successive interrupts

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

based systems

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

rotary is touched

• Two hardware selectable I2C addresses allowing two devices on a

single I2C bus

• 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

Implementations

• Control Panels

• Switch Replacements

• Rotary and Linear Sliders

Ty pical Applicat ions

• Appliances

• PC Peripherals

• Access Controls

• MP3 Players

• Remote Controls

• Mobile Phones

ORDERING INFORMATION

Device Name Temperature Range Case Number Rotary Slider

MPR083Q

-40C to +85C

1679

(16-Lead QFN) 8-Positions

MPR083EJ 948F

(16-Lead TSSOP)

VDD

VSS

SCL

SDA

AD0

SOUNDER

ATTN

IRQ MPR083

7856

14 1316 15

MPR083

Capacitive Touch

Sensor Controller

16-LEAD TSSOP

CASE 948F

Top View

Figure 1. Pin Connections

Bottom View

16-LEAD QFN

CASE 1679

VDD

VSS

SCL

SDA

AD0

SOUNDER

ATTN

IRQ

MPR083

Sensors

2Freescale Semiconductor

1 Device Overview

1.1 Introduction

Freescale Semiconductor’s MPR083 proximity capacitive touch sensor controller is one of a family of products designed to detect

the state of capacitive touch pads. The MPR083 offers designers a cost-efficient alternative to mechanical rotary switches for

control panel applications.

The MPR083 uses an I2C interface to communicate with the host which configures the operation and an interrupt to advise the

host of status changes. The MPR083 includes a pi ezo sounder drive which provides audible fe edback to simulate mechanical

key clicks. The MPR08X family has several implementations to use in your design including control panels and switch

replacements. The MPR083 controls rotary and linear sliders. Other members of the MPR08X family are well suited for other

application interface situations such as individual touch pads or rotary/touch pad combinations.

Freescale offers a broad portfolio of proximity sensors for products ranging from appliance control panels to portable electronics.

Target markets include consumer, appliance, industrial, medical and compute r peripherals.

1.1.1 Devices in the MPR08X series

The MPR08X series of Proximity Capacitive Touch Sensor Controllers allows for a wide range of app lications and

implementations. Each of the products in Table 1 perform a different application specific task and are optimized for this specific

functionality.

1.1.2 Internal Block Diagram

The MPR083 consists of primary functional blocks; Interrupt Controller, I2C Serial Interface, Sounder Control ler, Configuration

and Status registers, Rotary Position Decoder, Magnitude Comparator and Recalibrator, EMI Burst/Noise Rejection Filter ,

Capacitance Measurement Analog Front End. Each of these blocks will be described in detail in their respective sections.

Figure 2. Functional Block Diagram

Table 1. MPR08X family Overview

Product Bus Sounder Rotary/Slider Touch Pad Array

MPR083 I2CYes 8-positions —

MPR084 I2CYes — 8 keys

CONFIGURATION AND STATUS REGISTERS

MAGNITUDE COMPARATOR AND RECALIBRATOR

EMI BURST/NOISE REJECT FILTER

CAPACITANCE MEASUREMENT A.F.E.

8 88

ROTARY

POSITION

ROTARY

POSITION

IRQ

SDA

SCL I2C

SERIAL

INTERFACE

INTERRUPT

CONTROLLER

MASKS

SET

RATE

ATTN

AD0

SOUNDER

DRIVER

CONTROLLER

8 POSITION ROTARY

CLEAR

MPR083

Sensors

Freescale Semiconductor 3

1.1.3 Terminology

The following terms are used to describe front panel interface and capacitive touch sensor technology throughout this document.

Table 2. Terminology

Term Definition

Touch Sensor A Touch Sensor is the combination of a Touch Sensor Controller and a connected conductive area

referred to as an electrode.

Touch Sensor Controller A Touch Sensor Controller is the intelligent part of a Touch Sensor which measures capacitance and

differentiates between touched and untouched pads.

Key A Key or Switch is a mechanical device that makes an electrical connection only whe n pressed.

Touch Pad A Touch Pad is a type of capacitive sensor that is used for direct replacement of a Key. A capacitive

touch sensor determines touch state by differentiati ng between high and low capacitance s. When

there is a change in the state this can be interpreted in the same way as a mechanical Key.

Encoder An Encoder is a group of touch pads arranged in a circular shape where the state of each touch pad

is used to determine the direction of rotation arou nd the touch pads.

Rotary A Rotary is a group of touch pads arranged in a circular shape where the state of each touch pad is

interpreted as an angle along the touch pads.

Slider A Slider is a group of touch pads arranged in a row where the state of each touch pad is used to

determine the position along the length of the touch pads.

Solid Pad A Solid or Full Pad is a type of touch pad where exactly one electrode is used

Split Pad A Split Pad is a type of touch pad where more than one electrode is used. Split Pads are used to

increase the total number of possible touch pads without increasing the electrical connections to the

Touch Sensor Controller.

N-key Lockout N-Key Lockout refers to the logic that determines how many keys can be simultaneously touched in

a system. For example, 1-key lockout would only allow a single key to be touched before ignoring

all future touches.

N-key rollover N-Key Rollover refers to the logic that determines how many keys can be pressed in succession

without releasing previous keys. For example, a system with 1-k ey lockout and 2-key rollover would

allow 2-keys to be pressed in succession but would only report the second key once the first key

was released.

I2CInter-Integrated Circuit Communication

MPR083

Sensors

4Freescale Semiconductor

2 External Signal Description

2.1 Device Pin Assignment

Table 3 shows the pin assignment for the MPR083. For a more detailed description of the functionality of each pin, refer to the

appropriate chapter.

The two packages available for the MPR083 are a 5x5mm 16 pin QFN and a 4x5mm 16 pin TSSOP. Both of the packages and

their respective pinouts are shown in Figure 3.

Figure 3. Package Pinouts

2.2 Recommended System Connections

The MPR083 Capacitive Touch Sensor Controller requires ten external passive components. When connecting the MPR083 in

a touch sensor system, the electrode lines must have pull-up resistors. The recommended value for these pull-ups is 780k.

Some electrode arrays will require higher or lower values depending on the application.

In addition to the 8 resistors, a bypass capacitor of 1µF should always be used between the VDD and VSS lines and a 4.7 k

pull-up resistor should be included on the IRQ.

Table 3. Device Pin Assignment

Pin Name Function

1ATTN

Attention Pin. Input, active low when asserted sets the Configuration Register’s DCE bit high

allowing communication with the part.

2IRQInterrupt Request Pin. Output, active-low, open-drain interrupt request signaling new events.

3 VDD Positive Supply Voltage

4 VSS Ground

5SCL

I2C Serial Clock

6SDA

I2C Serial Data

7 AD0 Address input. Low = slave address 0x4C. High = slave address 0x4D.

8 SOUNDER Sounder driver output. Connect a piezo sounder from this output to ground. Output is push-pull

9 - 16 E1, E2, E3, E4, E5,

E6, E7, E8 Rotary Electrode connections.

PAD Exposed pad Exposed pad on package underside (QFN only). Connect to VSS.

VDD

VSS

SCL

SDA

AD0

SOUNDER

ATTN

IRQ

7856

14 1316 15

VDD

VSS

SCL

SDA

AD0

SOUNDER

ATTN

IRQ

QFN TSSOP

MPR083

Sensors

Freescale Semiconductor 5

The remaining 5 connections are SCL, SDA, IRQ, ATTN, and SOUNDER. Depending on the specific application, each of these

control lines can be used by connecting them to a host system. In the most minimal system, the SCL and SDA must be connected

to a master I2C interface to communicate with the MPR083. All of the connections for the MPR083 are shown by the schematic

in Figure 4.

Figure 4. Recommended System Connections Sc he mat ic

Note that in this configuration the AD0 add ress line is tied high thus the slave address of the MPR083 0x4D. Alternatively the

address line can be pulled low if the host system needs the MPR083 to be on address 0x4C. This functionality can also be used

to incorporate two MPR083 devices in the same system.

2.3 Serial Interface

The MPR083 uses an I2C Serial Interface. The I2C protocol implementation and the specific s of communicating with the Touch

Sensor Controller are detailed in the follow ing sections.

2.3.1 Serial-Addressing

The MPR083 operates as a slave that sends and receives data through an I2C 2-wire interface. The interface uses a serial data

line (SDA) and a serial clock line (SCL) to achieve bi-directional communication between master(s) and slave(s). A master

(typically a microcontroller) initiates all data transfers to and from the MPR083, and generates the SCL clock that synchronizes

the data transfer.

The MPR083 SDA line operates as both an input and an open-drain output. A pull-up resistor , typically 4.7k, is required on SDA.

The MPR083 SCL line operates only as an input. A pull-up resistor, typically 4.7k, is required on SCL if there are multiple

masters on the 2-wire interface, or if the master in a single-master system has an open-drain SCL output.

Each transmission consists of a ST AR T condition (Figure 5) sent by a master , followed by the MPR083’s 7-bit slave address plus

R/W bit, a register address byte, one or more data bytes, and finally a STOP condition.

Figure 5. Wire Serial Interface Timing Details

VDD

VSS

SCL

SDA

AD0

SOUNDER

ATTN

IRQ

780kΩ

9GND

GND

MPR083

SCL

SDA

SOUNDER

ATTN

IRQ

8-POSITION

ROTARY

ELECTRODE

ARRAY

780kΩ780kΩ780kΩ780kΩ780kΩ780kΩ780kΩ

GND

1μF

VDD

4.7kΩ

VDD

SCL

SDA

tLOW

tHIGH

tHD STA

tHD DAT

tHD STA

tSU DAT tSU STA

tBUF

tSU STO

START

CONDITION

STOP

CONDITION

REPEATED START

CONDITION

START

CONDITION

MPR083

Sensors

6Freescale Semiconductor

2.3.2 Start and Stop Conditions

Both SCL and SDA remain high when the interface is not busy . A master signals the beginning of a transmission with a ST ART (S)

condition by transitioning SDA from high to low while SCL is high. When the master has finished communicating with the slave,

it issues a STOP (P) condition by transitioning SDA from low to high while SCL is high. The bus is then free for another

transmission.

Figure 6. Start and Stop Conditions

2.3.3 Bit Transfer

One data bit is transferred during each clock pulse (Figure 7). The data on SDA must remain stable while SCL is high.

Figure 7. Bit Transfer

2.3.4 Acknowledge

The acknowledge bit is a clocked 9th bit (Figure 8) which the recipient uses to handshake receipt of each byte of data. Thus each

byte transferred effectively requires 9 bits. The master generates the 9th clock pulse, and the recipient pulls down SDA during

the acknowledge clock pulse, such that the SDA line is stable low during the high period of the clock pulse. When the master is

transmitting to the MPR083, the MPR083 g enerates the acknowledge bit because the MPR083 is the recipient. When the

MPR083 is transmitting to the master, the master generates the acknowled ge bit because the master is the recipient.

Figure 8. Acknowledg e

DATA LINE STABLE

DATA VALID CHANGE OF

DATA ALLOWED

SDA

SCL

START

CONDITION

SDA

SCL

STOP

CONDITION

START

CONDITION

SDA

BY TRANSMITTER

12 89

CLOCK PULSE FOR

ACKNOWLEDGEMENT

SDA

BY RECEIVER

SCL

MPR083

Sensors

Freescale Semiconductor 7

2.3.5 The Slave Address

The MPR083 has a 7-bit long slave address (Figure 9). The bit following the 7-bit slave address (bit eight) is the R/W bit, which

is low for a write command and high for a read command.

Figure 9. Slave Address

The MPR083 monitors the bus continuously, waiting for a START condition followed by its slave address. When a MPR083

recognizes its slave address, it acknowledges and is then ready for continued communication.

2.3.6 Message Format for Writing the MPR083

A write to the MPR083 comprises the transmission of the MPR083’s keyscan slave address with the R/W bit set to 0, followed

by at least one byte of information. The first byte of information is the command byte. The command byte determines which

register of the MPR083 is to be written by the next byte, if received. If a STOP condition is detected after the command byte is

received, then the MPR083 takes no further action (Figure 10) beyond storing the command byte. Any bytes received after the

command byte ar e da ta bytes.

Figure 1 0. Command Byte Received

Any bytes received after the command byte are data bytes. The first data byte goes into the internal register of the MPR083

selected by the command byte (Figure 11).

Figure 11. Command and Single Data Byte Rec eived

If multiple data bytes are transmitted before a STOP condition is detected, these bytes are generally stored in subsequent

MPR083 internal reg i ste r s be ca u se th e command byte address generally auto-increments (Section 2.4).

2.3.7 Message Format for Reading the MPR083

The MPR083 is read using the MPR083’s internally stored command byte as address pointer , the same way the stored command

byte is used as address pointer for a write. The pointer generally auto-increments after each data byte is read using the same

rules as for a write (Section 6.4.1). Thus, a read is initiated by first configuring the MPR083’s command byte by performing a write

(Figure 12). The master can now read ‘n’ consecutive bytes from the MPR083, with the first data byte being read from the register

addressed by the initialized command byte.

SDA

1 R/W ACK

MSB

SCL

010100

SAAP0

SLAVE ADDRESS COMMAND BYTE

acknowledge from MPR083

R/W acknowledge from MPR083

D7 D6 D5 D4 D3 D2 D1 D0

CommandbyteisstoredonreceiptofSTOPcondition

SAAAP

SL AVE AD DRESS COMMAND BY T E DATA BYT E

acknowledge from MPR083

R/W 1byte

auto-i ncrement memory

word address

D15 D14 D13 D12 D11 D10 D9 D8 D1 D0D3 D2D5 D4D7 D6

How command byte and data byte

map into MPR083's registers

acknowledge from

MPR083

acknowledge from

MPR083

Sensors

8Freescale Semiconductor

When performing read-after-write verification, remember to re-set the command byte’s address because the stored command

byte address will generally have been auto-incremented after the write (Section 2.4).

Figure 12. ‘n’ Data Bytes Received

2.3.8 Operation with Multiple Master

The application should use repeated starts to address the MPR083 to avoid bus confusion between I2C masters.On a I2C bus,

once a master issues a start/repeated start condition, that master owns the bus until a stop condition occurs. If a master that does

not own the bus attempts to take control of that bus, then improper addressing may occur. An address may always be rewritten

to fix this problem. Follow I2C protocol for multiple master configurations.

2.3.9 Device Reset

The RST is an active-low software reset. This is implemented in the Configuration Register by activating the RST bit. When

asserted, the device clears any transaction to or from the MPR083 on the serial interface and configures the internal registers to

the same state as a power-up reset (Table 4). The MPR083 then waits for a START condition on the serial interface.

The sensor controller is capable of operating down to 1.8 V, however, in order for the sensor controller to exit reset and startup

correctly the host system must initially provide 2.0 V to 3.6 V input to VDD and then follow the process in Figure 13. This process

is required in applications that require regulated operation in the 1.8 V to 2.0 V range. In the case that the application uses an

unregulated battery, then the battery must initially provide at least 2.0 V to correctly power-up the sensor controller which limits

battery selection to the 2.0 V to 3.6 V range.

Figure 13. Low Voltage (1.8 V - 2.0 V) Power-up Sequence

SAAAP1

SLAVE ADDRESS COMMAND BYTE DATA BYT E

acknowledge from MPR083

R/W nbytes

auto-increment memory

word address

D15 D14 D13 D12 D11 D10 D9 D8 D1 D0D3 D2D5 D4D7 D6

How command byte and data byte

map into MPR083's registers

acknowledge from

MPR083

acknowledge from

MPR083

Established Comms with

Sensor Controller?

i.e. Read from FIFO

Is Data valid? (0 x 40)

Idle Delay Loop

Apply 2.0V to VDD Max

To Sensor Controller

Lower VDD to the desired operating voltage

1.8 V to 2.0 V

False

Tr u e

MPR083

Sensors

Freescale Semiconductor 9

2.4 Register Address Map

The MPR083 is a peripheral that is controlled and monitored thou gh a small array of internal registers which are accessed

through the I2C bus. When communicating with the MPR083 each of the registers in Table 4 are used for specific tasks. The

functionality of each specific register is detailed in the following sections.

Table 4. Register Address Map

Auto-Increment Address

FIFO Register 0x00 0x00

Fault Register 0x01 0x02

Rotary Status Register 0x02 0x00

Rotary Configuration Register 0x03 0x04

Sensitivity Threshold Register 0x04 0x05

Master Tick Period Register 0x05 0x06

Touch Acquisition Sample Period Register 0x06 0x07

Sounder Configuration Register 0x07 0x08

Low Power Configuration Register 0x08 0x09

Stuck Key Timeout Register 0x09 0x0A

Configuration Register 0x0A 0x00

Sensor Information Register 0x0B 0x0B

MPR083

Sensors

10 Freescale Semiconductor

3 Touch Detection

3.1 Introduction

When using a capacitive touch sensor system the raw data must be filter ed and interpreted. This process can be done many

different ways but the method used in the MPR083 is explained in this chapter.

3.2 Understanding the Basics

The rotary interface has to distinguish touch status through varying user conditions (different finger sizes in bare hands or gloves)

and environmental conditions (electrical an d RF noise, sensor contamination with dirt or moisture).

The rotary circuitry reports touch status as one of the following two conditions:

1. Rotary untouched

2. Rotary touched in one of eight positions.

The rotary is only touched in one position, ideally near the middle of one of the eight pads. If a touch occurs between pads,

untouched will be reported.

3.3 Conditional Output Scenarios

Since it is unlikely that in a real world case a single independent touch will occur two specific multi-touch response cases are

outlined. Methods for changing the sensitivity of the device will be discussed in another Chapter , but the important part is that the

sensitivity is determined by the strength of an input signal. If more than one input signal is above the selected sensitivity then the

touch sensor controller interprets this in a specific way. T his functionality is broken down into two different cases.

3.3.1 Simultaneous Touches

Any time two touches are detected at the same time the touch sensor controller recognizes this case and accounts for it. Any

time more than one key is pressed the touches are ignored. Thus the touch sensor controller will show the rotary as untouched.

In most cases one of the two electrodes will receive a stronger signal than the other . If the difference in capacit ance is statistically

significant between the pad with the stronger signal will be reported.

This functionality is sometimes called 1-Key Lockout.

3.3.2 Sequential Touches

Another case is when one rotary pad is touched and held and a second rotary pad is then touched and held. For this situation

the second touch will be ignored and th e first touch will continue to be reported .

If the second touch is released befo re the first touch then the second touch will be completely ignored. But, if the first touch is

released before the second then the system will report that the first key is released and that the second key is now touched. This

functionality is sometimes called 2-Key Rollover.

3.4 Rotary Configuration Register

The Rot ary Configu ration Regi ster configur es a variety of the MPR083 feat ures. Each of the se features i s described in fo llowing

sections. The I2C slave address of the Rotary Configuration Register is 0x03.

Figure 14. Rotary Configurati on Register

76543210

RRSE 00

ACE RRBE RTBE 0RE

Reset:10000001

= Unimplemented

MPR083

Sensors

Freescale Semiconductor 11

3.5 Touch Acquisition Sample Period Register

The Touch Acquisition Sample Period Register is used to determine the electrode scan period of the system. The I2C slave

address of the Touch Acquisition Sample Period Register is 0x06.

Figure 15. Touch Acquisition Sample Period Register

Table 5. Rotary Configuration Register Field Descriptions

Field Description

RSE Rotary Sounder Enable – The Rotary Sounder Enable bit controls if data is sent to

the sounder.

0 Disable – Click Feedback Off

1 Enable – Click Feedback On

ACE Auto Calibration Enable – The Auto Calibration Enable bit enables or disables the

auto calibration function.

0 Disable

1 Enable

RRBE Rotary Release Buffer Enable – The Rotary Release Buffer Enable bit determines

whether or not data is logged in the FIFO when the rotary transitions from a touched

to untouched state.

0 Disable – No Release Data Logged

1 Enable – Release Data Logged

RTBE Rotary Touch Buffer Enable – The Rotary Touch Buffer Enable bit determine s

whether or not data is logged in the FIFO any time a button is pressed.

0 Disable – Touches are not lo gged

1 Enable – Touches are logged

RE Rotary Enable – The Rotary Enable bit enables or disables the touch sensor. When

disabled, no touches are detected.

0 Disable – Touches not de tected

1 Enable – Touches detected

76543210

RTASP

Reset:00000001

= Unimplemented

Table 6. Touch Acquisition Sample Register Field Description

Field Description

7:0

TASP Touch Acquisition Sample Period – The Touch Acquisition Samp le Period Field

selects or reports the multiplication factor that is used to determine how often

electrodes are scanned. The resulti ng factor must be in the range 1 to 32. If the

value is outside of this range the TASP will be set to 00011111.

00000000 Encoding 0 – Sets the TASP multiplication factor to 1

00011111 Encoding 31 – Sets the TASP multiplication factor to 32.

MPR083

Sensors

12 Freescale Semiconductor

4 Modes of Operation

4.1 Introduction

The operating modes of the MPR083 are described in this section. Implementation and functionality of each mode are described.

The Modes of Operation of the MPR083 combine to form a suite of quick response and low power consumption functionality . This

is achieved through 2 Run modes and 2 S top Modes. The two modes are enabled by toggling the Configuration Register’s DCE

and RUNE bits as shown in Table 7. Note that while in a run mode, the only register that can be written to is the Configuration

Register. Thus, when changes to registers are needed, enter Stop1 mode, write to the registers and change the mode to “Run”.

4.2 Initial Power Up

On power-up, the interrupt output IRQ is reset, and IRQ will go high. The registers are reset to the values shown in Table 8.

Table 7. Mode Enable Register Bits

Mode RUNE DCE

Run1 1 1

Run2 1 0

Stop1 0 1

Stop2 0 0

Table 8. Power-Up Register Configu rations

FIFO Register FIFO is empty 0x00 0x40

Fault Register No faults 0x01 0x00

Rotary Status Register Rotary is untouched 0x02 0x00

Rotary Configuration Register Rotary is enabled, without interrupts, with

sounder enabled and Auto-Cal Disabled 0x03 0x81

Sensitivity Threshold Register Maximum sensitivity 0x04 0x00

Master Tick Period Register Master clock period is 10ms 0x05 0x05

Touch Acquisition Sample Period

Sounder Configuration Register Sounder is globally enabled, 10ms of 1kHz 0x07 0x01

Low Power Configuration Register Low Power Mode is disabled 0x08 0x00

Stuck Key Timeout Register Stuck key detector disabled 0x09 0x00

Configuration Register Stop1 Mode. IRQ is disabled 0x0A 0x14

Sensor Informa tion Register Fixed SensorInfo based on revision 0x0B 0xFF

MPR083

Sensors

Freescale Semiconductor 13

4.3 Run1 Mode

When in Run1 mode the sensor controller will run continuously . During Run1 all the modules are synchronized by the Master Tick

Period. This value can be set by using the Master Tick Period Register as outlin ed in the following section.

While in this mode all functionality of the MPR083 is enabled; touch detection will occur , and I2C communication will be available.

This mode is enabled by setting the Configuration Register’s RUNE and DCE bits high.

4.3.1 Master Tick Period Register

The Master Tick Period Register is used to set the master tick of this system. All parts of the system are synchronized to this

counter. This register is overridden in all modes except for Run1. When not in Run1 mode, the value of this register is ignored

and 8ms is used for the primary clock. The I2C slave address of the Master Tick Period Register is 0x05.

Figure 16. Master Tick Period Register

4.4 Run2 Mode

When in Run2 mode the sensor controller will continue to scan the electrodes but a low power state will be enabled between

each cycle. Because of this, any I2C communication that occurs, may or may not respond while the sensor is in this mode.

If DCE is enabled the sensor controller transitions between low power and active states. During the active part of the cycle

communication with the sensor controller is possible; however, Freescale always requires users to issue an ATTN signal prior to

initiating communications. Accessing the I2C interface while DCE mode is enabled without sending an ATTN signal first is likely

to produce invalid data.

This mode is enabled by setting the Configuration Register’s RUNE bit high and DCE bit low. The only way to exit this mode is

to toggle the Attention Pin, refer to Section 4.7.

4.5 Stop1 Mode

When in S top1 mode the sensor controller will not scan the electrodes. While capacitance sensing is disabled I2C

communications will still be accepted and the sensor controller will maintain instant aneous response to all register requests. This

is the only mode in which register values can be set.

This mode is enabled by setting the Configuration Register’s RUNE bit low and DCE bit high.

4.6 Stop2 Mode

When in Stop2 mode the sensor controller will not scan the electrodes or accept I2C communication. The MPR083 is off during

this mode.

This mode is enabled by setting the Configuration Register’s RUNE bit low and DCE bit low . The only way to exit this mode is to

toggle the Attention Pin, refer to Section 4.7.

76543210

RMTP

Reset:00000101

= Unimplemented

Table 9. Master Tick Period Register Field Descriptions

Field Description

7:0

MTP Master Tick Period – The Master Tick Period selects or reports the current value of the

touch sensor controller’s primary clock multiplier. The resulting period mu st be in the

range 5ms to 31ms. If the value is outside of this range the MTP will be set to 00011010.

00000000 Encoding 0 – Sets the primary clock multiplier to 5

00011010 Encoding 26 - Sets the primary clock multiplier to 31

MPR083

Sensors

14 Freescale Semiconductor

4.7 Configuration Register

The Configuration Register allows a user to reset the part, adjust Interrupt settings, and change the mode. The I2C slave address

of the Configuration Register is 0x0A.

Figure 17. Configuration Register

4.8 Attention Pin

The Attention (ATTN) pin allows a user to externally set the Configuration Register’s DCE bit hi gh. Thi s is latched on a high to

low transition. Since the current mode of the device is enabled through the DCE this will cause duty cycling to be disabled and

change the current mode from Run2 to Run1, or Stop2 to Stop1 (depending on the previous state).

When in Run2 or Stop2 modes this is the only way to enable the I2C communication.

76543210

RIRQR RST 0DCE IRQEN RUNE

Reset:00010100

= Unimplemented

Table 10. Configuration Register Field Descriptions

Field Description

7:5

IRQR Interrupt Rate – The Interrupt Rate Field selects the amount to multiply the MTP by

to determine the minimum delay between sequential In terrupts.

000 Encoding 0 – Sets the IRQR multiplication factor to 1

111 Encoding 7 – Sets the IRQR multiplication factor to 8

RST Reset – Asserts a global reset of the sensor controller.

0 Reset Asserted

1 Reset Not Asserted

DCE Duty Cycle Enable – The Duty Cycle Enable bit enables or disables duty cycling on

the MPR083. This bit is active low.

0 Duty Cycle Enab l ed (2 mo de s)

1 Duty Cycle Disab l ed ( 1 mode s)

IRQEN Interrupt Enable – The Interrupt Enable bit enables or disables the IRQ

Functionality.

0 IRQ Disabled

1 IRQ Enabled

RUNE Run Mode Enable – The Run Mode Enable bit enables or disables scanning of the

electrodes for touch detection. This bit is active high.

0 Electrode Scanning Disabled (Stop modes)

1 Electrode Scanning Enabled (Run modes)

MPR083

Sensors

Freescale Semiconductor 15

5 Low Power Configuration

5.1 Introduction

The MPR083 features a Low Power mo de that can reduce the power consumption into the microamps range. This feature can

be used to both adjust the response time of the system, and change the conditions on which Low Power would be en abled.

5.2 Operation

This Low Power configuration is only active when the sensor controller is in Run2 mode. The Low Power mode decreases current

consumption by increasing the response time of the MPR083. This increase is controlled through two factors.

During normal Run2 operation of the sensor controller the Max Response T ime (MRT ) is calculated by taking the product of the

TASP and the primary clock. From Chapter 4 the primary clock is the (MTP + 5) ms. Since the sensor controller is in Run2, the

primary clock is also multiplied by a factor of 8. The debounce rate of the MPR083 is 4 times the sample rate thus the MRT is

represented by the following equation.

Equation 1

First, the Idle Interface T imeout (IIT) represents the tot al time the touch interface should remain idle before going into Low Power

mode. This value can be calculated by taking the product of the ITP, TASP and primary clock (8ms) with a factor of 64. Thus the

IIT is represented as follows:

Equation 2

Second, the Max Response T ime (MRT) represents the total time the touch interface should remain inactive before scanning the

electrodes. This value can be calculated by taking the product of the SCD, T ASP and primary clock (8ms) with a factor of 5. Thus

the MRT is represented as follows:

Equation 3

When in Run2 mode, the sensor controller will initially scan the electrodes at the rate of MRT1. When scanning at MRT1 and the

touch interface remains idle for the IIT period then the scan period will change to MRT2. When scan ning at MRT 2 and a touch is

detected the scan rate will transition back to MRT1.

Figure 18. Low Power Scan Period Transition Diagram

MRT1MTP 5+

----------------------1+





TASP 48ms=

MRT2MTP 5+

----------------------1+





TASP SCD 48ms=

ITT MTP 5+

----------------------1+





TASP ITP 68ms=

LP DISABLED

ITT PERIOD

run2 SET

TOUCH DETECTED

MRT1MRT2

MPR083

Sensors

16 Freescale Semiconductor

5.3 Configuration

Low Power Configuration is achieved through setting two values; the Idle Timeout Period and the Sleep Cycle Duration. This

functionality is described in the following section.

5.3.1 Low Power Configuration Register

The Low Power Configuration register is used to set both the Idle T imeout Period and Sleep Cycle Duration multiplication factors.

The I2C slave address of the Low Power Configuration Reg iste r is 0x08.

Figure 19. Low Power Configuration Register

76543210

RITP SCD

Reset:00000000

= Unimplemented

Table 11. Low Power Configuration Register Field Des criptions

Field Description

7:5

ITP Idle Timeout Period – The Idle Timeout Period selects the amount to multi ply the

TASP (touch acquisition sample period) by to determine the idle interface timeout

(IIT) period of the sensor controller.

000 Encoding 0 – Disables Low Power Mode

001 Encoding 1 – Sets the ITP multiplication factor to 1

111 Encoding 7 – Sets the ITP multiplication factor to 7

4:0

SCD Sleep Cycle Duration – The Sleep Cycle Duration Field selects the amount to

multiply the TASP (touch acquisition sample period) by to determine the Sleep

period of the sensor controller.

00000 Encoding 0 – Disables Low Power Mode

00001 Encoding 1 – Sets the SCD multiplication factor to 1

11111 Encoding 31 – Sets the SCD multiplication factor to 31

MPR083

Sensors

Freescale Semiconductor 17

6 Output Mechanisms

6.1 Introduction

The MPR083 has three primary methods for reporting data in addition to an IRQ output that is described in Chapter 7. The three

output systems are described in this section.

6.2 Instantaneous

The Instantaneous output shows the current status of the user interface. This information is displayed in terms of the current

rotary position that is touched. Only one touch can be shown at a time.

6.2.1 Rotary Status Register

The Rotary Status Register is a read only register for determining the current status of the rotary. The I2C slave address of the

Rotary Status Register is 0x02.

Figure 20. Rotary Status Register

6.3 Buffered

The Buffered output is done through a FIFO. The FIFO will buffer every touch that occurs up to 30 values before the buffer

overflows and data is lost. Any time data is read from the FIFO it is pulled from the buffer and the next item becomes available.

The buffer can be cleared (NDF goes high) by either reading the last entry or attempting to write to the register.

The buffer settings are configured in the Rotary Configuration Register as described in Section 3.4.

6.3.1 FIFO Register

The FIFO Register is a read only register for determining the current status of the rotary . Any time a write is issued to this register

the buffer will be cleared. The I2C slave address of the FIFO Register is 0x00.

Figure 21. FIFO Register

76543210

R0 0 0 SF CP

Reset:00000000

= Unimplemented

Table 12. Rotary Status Register Field Descriptions

Field Description

SF Status Flag – The Status Flag shows when the rotary is currently detecting a touch.

0 Rotary is not currently detecting a touch

1 Rotary is currently detecting a touch

3:0

CP Current Position – The Current Position represents the electrode that is currently

being touched.

0000 Encoding 0 – Electrode 1 is currently touched

0111 Encoding 7 – Electrode 8 is currently touched

76543210

R MDF NDF OF TRF BP

Reset:01000000

= Unimplemented

MPR083

Sensors

18 Freescale Semiconductor

6.4 Error

The MPR083 can generate a fault under two conditions; an electrode is shorted to VDD, or an electrode is shorted to VSS. Once

a fault is asserted the sensor electrodes will no longer be scanned until the fault is cleared. In the event of multiple faults occurring

at the same time, the sensor controller will report the first fault that is detected during scanning.

6.4.1 Fault Register

The Fault Register is a read only register that shows the fault number under the current sensor conditions. Any write to the Fault

Register will clear the register , when in St op mode. The Fault register cannot be cleared when the part is in a Run mode. The I2C

slave address of the Fault Register is 0x01.

Figure 22. Fault Register

Table 13. FIFO Register Field Descriptions

Field Description

MDF More Data Flag – The More Data Flag shows whether or not data will remain in the

buffer after the current read.

0 No Data Remaining

1 Data Remaining

NDF No Data Flag – The No Data Flag shows whether or not there is currently data in

the buff er.

0 Buffer currently has data

1 Buffer does not currently have data

OF Overflow Flag – The Overflow Flag shows whether or not an overflow has occurred.

If this flag is high then the most current data was lost.

0 No Overflow has occurred

1 Overflow has occurred

TRF Touch Release Flag – The Touch Release Flag shows if the current buffer entry is

a touch or release of a pad.

0 Pad is released

1 Pad is touched

3:0

BP Buffered Position – The Buffered Position represents the electrode number that is

currently being displayed by the buffer.

0000 Encoding 0 – Buffered touch of electrode 1

0111 Encoding 7 – Buffered touch of electrode 8

76543210

R0 0 0 0 0 0 FAULT

Reset:00000000

= Unimplemented

Table 14. Fault Register Field Descriptions

Field Description

1:0

FAULT Fault – The Fault code represe nts the currently asserted fault condition.

00 Encoding 0 – No fault detected

01 Encoding 1 – Short to VSS detected

10 Encoding 2 – Short to VDD detected

MPR083

Sensors

Freescale Semiconductor 19

7 Interrupts

7.1 Introduction

The MPR083 has one interrupt output that is configured by registers and alerts the application when a touch or fault is detected.

When running in Run2 or S top2 mode where I2C communication is not available this feature alerts the user to sensor touches.

7.2 Condition for Interrupt

There are two cases that latch the Interrupt buffered data available or fault detected.

7.2.1 Buffered Data Available

The interrupt for Buffered Data A vailable will only trigger when the NDF (No Data Flag) transitions from high to low . This signifies

that there is new data available in the buffer. The interrupt is deasserted on the first read/write of the FIFO Register and cannot

be reasserted for buffered data until the FIFO is empty (either by re ad i ng al l the da ta, or clearing the buffer).

7.2.2 Fault Detected

The interr up t for a fault detected co n di ti o n is triggered any time the Fault condition in the Fault Register transitions from zero to

non-zero. The interrupt is deasserted when the Fault Register is cleared (by writing to the Fault Register).

7.3 Settings

Interrupts are configured through I2C using the Configuration Register (Section 4.7). T wo of the settings in this register will affect

the interrupt functionality.

The Interrupt Enable (IRQEN) must be set high for the IRQ to be enabled. When low, all interrupts will be ignored, and the IRQ

pin will never latch.

The Interrupt Rate (IRQR) sets the minimum delay between sequential triggered interrupts. The minimum interrupt period can be

calculated by taking the product of the (MTP + 5) and IRQR with a factor of 4. Thus, for the minimum setting an interrupt would

be triggered no more often than 4 times the master clock.

Equation 4

If the MPR083 is using Run2, the minimum interrupt pe riod would be represented by the following equation.

Equation 5

7.4 IRQ Pin

The IRQ pin is an open-drain, latching interrupt output which requires an external pull-up resistor . The pin will latch down based

on the condi ti on s in Section 6.2. The pin will reset when an I2C transmission reads/writes the appropriate register displaying

information about the source of the interrupt. Thus if the source is buffered data available then a FIFO Buffer read/write will clear

the IRQ pin. If the source is a fault detected then a write of the Fault Register will clear the pin.

MinInterruptPeriod ms MTP 5+IRQR4=

MinInterruptPeriod ms MTP 5+

----------------------1+





8IRQR 4=

MPR083

Sensors

20 Freescale Semiconductor

7.4.1 IRQ Pin Timing

The MinInterru ptPeriod is implemented as a hold off of IRQ latching per Figure 23 and Figure 24. In the first case the

MinInterruptPeriod is longer than the interval between seque ntial interrupt source events, thus it delays the IRQ from latching

until the MinInterruptPeriod has elapsed.

Figure 23. IRQ Timing Diagram - Case 1

In the second case the MinInterruptPeriod is shorter than the interval between sequential interrupt source events, thus the IRQ

latches as it normally would without additional delay.

Figure 24. IRQ Timing Diagram - Case 2

Initial Interrupt Event

MinInterruptPeriod

Second Interrupt Event

IRQ

Initial Interrupt Event

MinInterruptPeriod

Second Interrupt Event

IRQ

MPR083

Sensors

Freescale Semiconductor 21

8Calibration

8.1 Introduction

The MPR083 is self-calibrating. This is done both at initial start-up of the device and during run ti me.

8.2 Initial Start-up Conditions

Initial calibration of the MPR083 occurs every time the device resets. The first key detection cycle is used as a baseline

capacitance value for all remaining calculations. Thus, a touch is detected by taking the difference between this baseline value

and the current capacit ance on the electrode.

8.3 Auto-Calibration

The MPR083 has an auto-calibration feature. This is enabled through the Rotary Configuration Register (Section 3.4), by setting

the ACE bit high. Auto calibration is done by two mechanisms. The basic auto-calibration will recalculate the baseline value after

6 sample periods. Thus the auto calibrate period can be calculate by multiplying the master clock period (in milliseconds) and the

touch acquisition sample period with a factor of 64.

Equation 6

If a touch is currently being detected the auto-calibration will not engage and calibration will be ignored. The device can also be

calibrated when a key is being touched, this is controlled by stuck key detection.

8.4 Stuck Key Detection

The S tuck Key Detection system allows the application to specify the maximum amount of time a touch should be detected before

it is calibrated into the baseline and the touch is ignored. This is controlled by setting the S tuck Key T imeout multiplication factor

(SKT). The timeou t pe ri o d ca n be cal c u l at ed by multipl yi ng the SKT, master clock period (i n ms) and touch acquisition sample

period with a factor of 64.

Equation 7

When Stuck Key Detection is off a touched key will remain touche d indefinitely and never be calibrated into the baseline value.

8.4.1 Stuck Key Timeout Register

The S tuck Key Timeout Register is used to determine the electrode scan period of the system. The I2C slave address of the Stuck

Key Timeout Register is 0x09.

Figure 25. Stuck Key Timeout Register

76543210

RSKT

Reset:00000000

= Unimplemented

Table 15. Stuck Key Timeout Register Field Descriptions

Field Description

7:0

SKT Stuck Key Timeout – The Stuck Key Timeout field selects or reports the

multiplication factor that is used to determine how often electrodes are calibra ted

while a touch is being detected.

00000000 Encoding 0 – Turns off Stuck Key Detection

00000001 Encoding 1 – Sets the SKT multiplication factor to 2

11111111 Encoding 255 – Sets the SKT multiplication factor to 256

AutoCalibrationPeriod ms MCP TASP64=

AutoCalibrationPeriod ms MCPTASPSKT 64=

MPR083

Sensors

22 Freescale Semiconductor

9 Sensitivity

9.1 Introduction

The MPR083 can operate in a variety of environments with a variety of different electrode patterns. Because of this it is necessary

to adjust the relative sensitivity of the sensor controller. Usually this requires fine tuning in any final application.

There are many factors that must be taken into account, but much of the time this value is relative to the capacitance changes

generated by a touch. Since capacitance is directly proportional to the dielectric constant of the material and the area of the pad,

while inversely proportional to the distance between pads these are the primary factors.

Equation 8

As the relative capacitance rises the sensitivity setting of the MPR083 should be adjusted accordingly . Thus a very high sensitivity

value represents a large A and a small d.

9.2 Adjusting the Sensitivity

The sensitivity of the MPR083 is adjusted by varying the Sensitivity Th reshold Register.

9.2.1 Sensitivity Threshold Register

The sensitivity register allows the sensitivity of the MPR083 to be adju s ted for any situation. The I2C slave address of the

Sensitivity Threshold Register is 0x04.

Figure 26. Sensitivity Threshold Register

76543210

RSL

Reset:00000000

= Unimplemented

Table 16. Sensitivity Th reshold Register Field Descriptions

Field Description

7:0

ST Sensitivity Threshold – The Sensitivity Threshold selects or reports the sensitivity

setting of the Sensor Controller. The resulting value must be in the range 1 to 64

units. If the value is outside of this range the ST will be set to 00111111.

00000000 Encoding 0 – Sets the sensitivity to level 1

00111111 Encoding 63 – Sets the sensiti vi ty to level 64

Cke0A

------------

MPR083

Sensors

Freescale Semiconductor 23

10 Additional Features

10.1 Key Click Sound Generator

The Key Click Sound Generator allows the MPR083 to generate audible feedback, independent of the I2C communication status.

The sounder is used to drive a piezo buzzer. This output is configure d by using the Sounder Register, shown in the followin g

section.

10.1.1 Sounder Configuration Register

The I2C slave address of the Sounder Configuration Register is 0x07.

Figure 27. Sounder Configuration Regist er

10.2 Sensor Information

The Sensor Information register is a read only register that displays a descriptor which contains static information abo ut the

MPR083 version.

10.2.1 Sensor Information Register

The I2C slave address of the Sensor Information Register is 0x0B.

Figure 28. Sensor Information Register

76543210

R00000

CP FREQ SEN

Reset:00000001

= Unimplemented

Table 17. Sounder Configuration Reg ister Field Descri ptions

Field Description

CP Click Period – The Click Period bit controls the length of the sounder click.

0 Sounder Click Period is 10ms

1 Sounder Click Period is 20ms

FREQ Frequency – The Frequency bit controls the frequency of the driven output.

0 Sounder frequency is 1kHz

1 Sounder frequency is 2kHz

SEN Sounder Enable – The Sounder Enable bit enables or disables the sounder output.

0 Disable

1 Enable

76543210

R SensorInfo

Reset:01000110

= Unimplemented

Table 18. Sensor Information Register Field Des criptions

Field Description

7-0

SensorInfo SensorInfo – The Sensor Information register describes the version information for

the part. Burst reads will display ASCII data in the following format:

VENDOR_LABEL",PN:"PRODUCT_LABEL",QUAL:"BUILD_TYPE_LABEL",VER:"

BUILD_VERSION_MAJOR"_"BUILD_VERSION_MINOR"_"BUILD_NUMBER"\0"

MPR083

Sensors

24 Freescale Semiconductor

Appendix A Electrical Characteristics

A.1 Introduction

This section contains electrical and timing specifications.

A.2 Absolute Maximum Ratings

Absolute maximum ratings are stress ratings only, and functional operation at the maxima is not guaranteed. S tress beyond the

limits specified in Table A-1 may affect device reliability or cause permanent damage to the device. For functional operating

conditions, refer to the remaining tables in this section. This device contains circuitry protecting against damage due to high static

voltage or electrical fields; however, it is advised that normal precautions be taken to avoid applica ti on of any voltages higher

than maximum-rated voltages to this high-impedance circuit.

A.3 ESD and Latch-up Protection Characteristics

Normal handling precautions should be used to avoid exposur e to static discharge.

Qualification tests are performed to ensure that thes e devices can withstand exposure to reasonable levels of static without

suffering any permanent damage. During the device qualification ESD stresses were performed for the Human Body Model

(HBM), the Machine Model (MM) and the Charge Device Model (CDM).

A device is defined as a failure if after exposure to ESD pulses the device no longer meets the device specification. Complete

DC parametric and functional testing is performed per the applicable device specification at room temperature followed by hot

temperature, unless specified otherwise in the device specification.

Table 19. Absolute Maximum Ratings - Voltage (with respect to VSS)

Rating Symbol Value Unit

Supply Voltage VDD -0.3 to +3.8 V

Input Voltage

SCL, SDA, AD0, IRQ, ATTN,

SOUNDER

VIN VSS - 0.3 to VDD + 0.3 V

Operating Temperature Range TSG -40 to +85 °C

Storage Temperature Range TSG -55 to +150 °C

Table 20. ESD and Latch-up Te s t Conditions

Rating Symbol Value Unit

Human Body Model (HBM) VESD ±2000 V

Machine Model (MM) VESD ±200 V

Charge Device Model (CDM) VESD ±500 V

Latch-up current at TA = 85°C ILATCH ±100 mA

MPR083

Sensors

Freescale Semiconductor 25

A.4 DC Characteristics

This section includes information abo ut power supply requirements and I/O pin characteristics.

*The MPR083 requires a specific start-up sequence for VDD< 2.0 V. Refer to Section 2.3.9.

A.5 I2C AC Characteristics

This section includes informati on about I2C AC Characterist ic s.

Table 21. DC Characteristics (Temperature Range = –40°C to 85°C Amb ient)

(Typical Operating Circuit , VDD = 1.8 V* to 3.6 V, TA = TMIN to TMAX, unless otherwise not ed. Typical Current values are at VDD = 3.3 V,

TA = +25°C.)

Parameter Symbol Conditions Min Typ Max Units

Operating Supply Voltage VDD 1.8* 3.6 V

Run1 mode Current Irun1 VDD = 1.8 V 1.62 mA

Run2 mode Current Irun2 VDD = 1.8 V 41 µA

Stop1 mode Current Istop1 VDD = 1.8 V 1.47 mA

Stop2 mode Current Istop2 VDD = 1.8 V 2 µA

Input High Voltage

SDA, SCL VIH 0.7 x VDD V

Input Low Voltage

SDA, SCL VIL 0.35 x VDD V

Input Leakage Current

SDA, SCL IIH, IIL 0.025 1 µA

Input Capacitance

SDA, SCL 7pF

Output Low Voltage

SDA, IRQ VOL IOL = 6mA 0.5V V

Table 22. I2C AC Characteristics

(Typical Operating Circuit, VDD = 1.8 V to 3.6 V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 3.3 V,

TA = +25°C.)

Parameter Symbol Conditions Min Typ Max Units

Serial Clock Frequency (1)

1. Clock Stretching is required for reliable communications

fSCL 100 kHz

Capacitive Load for Each Bus Line Cb400 pF

MPR083

Sensors

26 Freescale Semiconductor

Appendix B Brief Register Descriptions

FIFO Register: 0x00

Fault Register: 0x01

Rotary Status Register: 0x02

Rotary Configuration Register: 0x03

Sensitivity Threshold Register: 0x04

Master Tick Period Register: 0x05

76543210

R MDF NDF OF TRF BP

Reset:01000000

= Unimplemented

76543210

R0 0 0 0 0 0 FAULT

Reset:00000000

= Unimplemented

76543210

R0 0 0 SF CP

Reset:00000000

= Unimplemented

76543210

RRSE 00

ACE RRBE RTBE 0RE

Reset:10000001

= Unimplemented

76543210

RSL

Reset:00000000

= Unimplemented

76543210

RMTP

Reset:00000101

= Unimplemented

MPR083

Sensors

Freescale Semiconductor 27

Touch Acquisition Sample Period Register: 0x06

Sounder Configuration Register: 0x07

Low Power Configuration Register: 0x08

Stuck Key Timeout Register: 0x09

Configuration Register: 0x0A

Sensor Information Register: 0x0B

76543210

RTASP

Reset:00000001

= Unimplemented

76543210

R00000

CP FREQ SEN

Reset:00000001

= Unimplemented

76543210

RITP SCD

Reset:00000000

= Unimplemented

76543210

RSKT

Reset:00000000

= Unimplemented

76543210

RRST 0DCE IRQEN RUNE

Reset:00010100

= Unimplemented

76543210

R SensorInfo

Reset:00000001

= Unimplemented

MPR083

Sensors

28 Freescale Semiconductor

Appendix C Ordering Information

C.1 Ordering Information

This section contains ordering information for MPR083Q and MPR083EJ devices.

C.2 Device Numbering Scheme

All Proximity Sensor Products have a similar numbering scheme. The below diagram explains what each part number in the

family represents.

ORDERING INFORMATION

Device Name Temperature Range Case Number Rotary Slider

MPR083Q

-40C to +85C

1679

(16-Lead QFN) 8-Positions

MPR083EJ 948F

(16-Lead TSSOP)

Status

(M = Fully Qualified, P = Preproduction)

Proximity Sensor Product

EE X P

Number of Electrodes

(08 = 8 electrode device)

Package Designator

Version

(Q = QFN, EJ = TSSOP)

MPR083

Sensors

Freescale Semiconductor 29

PACKAGE DIMENSIONS

PAGE 1 OF 3

MPR083

Sensors

30 Freescale Semiconductor

PACKAGE DIMENSIONS

PA GE 2 OF 3

MPR083

Sensors

Freescale Semiconductor 31

PACKAGE DIMENSIONS

PAGE 3 OF 3

MPR083

Sensors

32 Freescale Semiconductor

PACKAGE DIMENSIONS

PA GE 1 OF 3

MPR083

Sensors

Freescale Semiconductor 33

PACKAGE DIMENSIONS

PA GE 2 OF 3

MPR083

Sensors

34 Freescale Semiconductor

PACKAGE DIMENSIONS

PA GE 3 OF 3

MPR083

Rev. 5

06/2010

Information in this docume nt is provided solely to enable system and soft ware

implementers to use Freescale Semiconductor products. There are no express or

implied copyright licenses granted hereunder to design or fabricate any integrated

circuits or integrated circuits based on the information in this document.

Freescale Semiconductor reserves the ri ght to make changes without further notice to

any products herein. Freescale Semiconductor makes no warranty, representation or

guarantee regarding the suitability of its products for any particular purpose, nor does

Freescale Semiconductor assume any liability arising out of the application or use of any

product or circuit, and specifically disclaims any and all liability, including without

limitation consequential or incidental damages. “Typical” parameters that may be

provided in Freescale Se miconductor data sheets and/or specifications can and do vary

in different applications and actual performance may vary over time. All operating

parameters, includin g “Typicals”, must be validated for each customer application by

customer’s technical experts . Freescale Semiconductor does not convey any license

under its patent rights no r the rights of others. Freescale Semiconductor products are

not designed, intended, or authorized for use as components in systems intended for

surgical implant into the body, or other applications intended to support or sustain life,

or for any other application in which th e failure of th e Freescale Semiconductor product

could create a situation where personal inju ry or death may occur. Should Buyer

purchase or use Freescale Semiconductor products for any such unintended or

unauthorized application, Buyer shall indemn ify and hold Freescale Semiconductor and

its officers, employees, subsidiaries, affiliates, and distributors harmless against all

claims, costs, damages, and expenses, and reasonable attorney fees arising out of,

directly or indirectly, any claim of personal injury or death associated with such

unintended or unauthorized use, even if such claim alleges that Fr eescale

Semiconductor was negligen t regarding the design or manufacture of the part.

Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc.

All other product or service names are the property of their respective owners.

RoHS-compliant and/or Pb-fr ee versions of Freescale products have the functionality and electrical

characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further

information, see http:/www.freescale.com or contact your Freescale sales representative.

For information on Freescale’ s Environmental Products progr am, go to h ttp://www .fre escale.com/epp.

How to Reach Us:

Home Page:

www.freescale.com

Web Support:

http://www.freescale.com/support

USA/Europe or Locations Not Listed:

Freescale Semiconductor, Inc.

Technical Information Center, EL516

2100 East Elliot Road

Tempe, Arizona 85284

1-800-521-6274 or +1-480-768-2130

www.freescale.com/support

Europe, Middle East, and Africa:

Freescale Halbleiter Deutschland GmbH

Technical Information Center

Schatzbogen 7

81829 Muenchen, Germany

+44 1296 380 456 (English)

+46 8 52200080 (English)

+49 89 92103 559 (German)

+33 1 69 35 48 48 (French)

www.freescale.com/support

Japan:

Freescale Semiconductor Japan Ltd.

Headquarters

ARCO Tower 15F

1-8-1, Shimo-Meguro, Meguro-ku,

Tokyo 153-0064

Japan

0120 191014 or +81 3 5437 9125

support.japan@freescale.com

Asia/Pacific:

Freescale Semiconductor China Ltd.

Exchange Building 23F

No. 118 Jianguo Road

Chaoyang District

Beijing 100022

China

+86 10 5879 8000

support.asia@freescale.com

For Literature Requests Only:

Freescale Semiconductor Literature Distribution Center

1-800-441-2447 or +1-303-675-2140

Fax: +1-303-675-2150

LDCForFreescaleSemiconductor@hibbertgroup.com