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此手册非常的详细的介绍了IQS263芯片的相关信息。

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IQ Switch ProxSense Series ProxSense IQS263 Datasheet 3 Channel Capacitive Touch and Proximity Controller with 8bit Resolution Slider or Scroll Wheel The IQS263 ProxSense IC is a 3channel projected or self capacitive proximity and touch controller with best in class sensitivity signal to noise ratio and power consumption Other features include automatic tuning for sense electrodes internal reference capacitor and internal regulator to reduce total system cost Main Features 3 Sel......

IQ Switch

ProxSense

Series

ProxSense

IQS263 Datasheet

3 Channel Capacitive Touch and Proximity Controller with 8-bit Resolution

Slider or Scroll Wheel

The

IQS263

ProxSense

IC is a 3-channel projected (or self) capacitive proximity and touch

controller with best in class sensitivity, signal to noise ratio and power consumption. Other

features include automatic tuning for sense electrodes, internal reference capacitor and

internal regulator to reduce total system cost.

Main Features



3 Self or Mutual Channel Capacitive Controller

Configurable 8-bit 2/3 channel slider or 3 channel scroll wheel

Up to 80Hz report rate

On chip Movement Detection algorithm

SAR compliance in mobile devices according to the IEC 62209-2 ed1.0

standard and the FCC standard (KDB 616217 – D04 SAR for laptop and

tablets v01)

Left and right flick gesture recognition

Automatic adjustment for optimal performance (ATI)

User selectable Proximity and Touch thresholds

Long proximity range

Automatic drift compensation

Fast I

C Interface

Event mode or Streaming modes

Hibernation mode

Low Power, suitable for battery applications

Supply voltage: 1.8V to 3.6V

<3µA Active sensing in LP mode

<100µA full running current up to 40Hz report rate

SAR detection for tablets and mobile phones

SAR detection for wireless charging stations (operating frequency > 100MHz)

SAR detection for USB dongle-type devices

Sliders/Scroll wheels for remote controls

Movement detection devices (anti-theft)

Volume Control & Lid closure detection for laptops

MP3 players

Portable Electronics

Wearable Electronics

-40 °C to 85 °C

IQS263 MSOP10 / DFN 10

Representations only, not actual

markings

RoHS2

Compliant

Applications

Available Options

MSOP10

IQS263

DFN10 (3x3)

IQS263

Page 1 of 50

February 2015

IQS263 Datasheet V1.04

IQ Switch

ProxSense

Series

Contents

INTRODUCTION .................................................................................................................................................. 3

ANALOGUE FUNCTIONALITY............................................................................................................................... 3

DIGITAL FUNCTIONALITY .................................................................................................................................... 3

PASSING THE SAR QUALIFICATION TESTING ....................................................................................................... 4

HARDWARE CONFIGURATION ............................................................................................................................ 4

USER CONFIGURABLE OPTIONS .......................................................................................................................... 9

SLIDERS/WHEEL COORDINATE TO POSITION MAPPING.....................................................................................18

PROXSENSE MODULE .......................................................................................................................................21

COMMUNICATION ............................................................................................................................................26

COMMUNICATION COMMAND/ADDRESS STRUCTURE .....................................................................................28

SPECIFICATIONS ................................................................................................................................................40

PACKAGING INFORMATION ..............................................................................................................................42

DEVICE MARKING ..............................................................................................................................................48

ORDERING INFORMATION ................................................................................................................................49

CONTACT INFORMATION ..................................................................................................................50

APPENDIX A.

Revision History

Version

1.00

1.01

1.02

1.03

1.04

Description

First Release

Update Package Marking

Add section for coordinate mapping

Update I2C time-out descriptions

Add DFN10 (3x3) descriptions

Date

Jan 2014

Jun 2014

Aug 2014

Nov 2014

Jan 2015

IQS263 Datasheet V1.03

Page 2 of 50

February 2015

IQ Switch

ProxSense

Series

Functional Overview

capacitance (Cm) between the two electrodes.

CTX is charged up to a set positive potential

The

IQS263

is a 3 channel projected (or self) during a charge cycle which results in a

capacitive proximity and touch sensor negative charge buildup at CRX.

featuring an internal voltage regulator and

The resulting charge displacement is then

reference capacitor (C

measured within the

IQS263

device through a

The device has 4 possible pins for the charge transfer process that is periodically

connection of the sense electrodes, which

initiated by the digital circuitry. The

consist of 3 Self electrodes, or 3 receivers and

1 transmitter. Three pins are used for serial capacitance measurement circuitry makes use

data communication through the I

of an internal reference capacitor C

and

compatible protocol, including an optional voltage reference (V

REF

RDY pin. The transmitter pin can also be used

as an I/O for output upon proximity detection The measuring process is referred to as a

when the device is used in Self capacitive conversion and consists of the discharging of

Cs and Cx capacitors, the charging of Cx and

mode.

The device automatically tracks slow varying then a series of charge transfers from Cx to

environmental changes via various filters, Cs until a trip voltage is reached. The number

detects noise and is equipped with an of charge transfers required to reach the trip

Automatic Tuning Implementation (ATI) to voltage is referred to as the Counts (CS)

value.

adjust the device for optimal sensitivity.

1 Introduction

1.1 Applicability

All specifications, except where specifically

mentioned otherwise, provided by this

datasheet are applicable to the following

ranges:

The analogue

functionality for:

circuitry

further

provides



Power On Reset (POR) detection.



Brown Out Detection (BOD).



Internal regulation provides for accurate

sampling.



Temperature -40°C to +85°C



Supply voltage (V

DDHI

) 1.8V to 3.6V

1.2 Device Operation

3 Digital Functionality

The digital processing functionality

With a normal activation (hand brought close) responsible for:

the output bit(s) will become active. These

outputs will clear as soon as the action is



Managing BOD and WDT events.

reversed (hand taken away). In addition a



Initiation of conversions at the selected

separate movement output will become active

rate.

when movement is detected according to a

movement threshold. Movement may be



Processing of CS and execution of

algorithms.

detected before the normal touch threshold is

crossed. Movement detection is done via a



Monitoring and execution of the ATI

completely separate digital filter.

algorithm.



2 Analogue Functionality



CRX and CTX electrodes are arranged in a



suitable configuration that results in a mutual



Signal processing and digital filtering.

Detection of PROX and TOUCH events.

Managing outputs of the device.

Managing serial communications.

Page 3 of 50

February 2015

IQS263 Datasheet V1.04

IQ Switch

ProxSense

Series

4 Passing the SAR

Qualification Testing

5 Hardware Configuration

The

IQS263

can be configured to charge in

Self- or Projected-Capacitive mode through

the memory map by the host controller. The

IQS263

is default in Self Capacitive mode,

and can be set to Projected-Capacitive mode

by setting the “Proj Mode” bit in

0x01,

byte 0.

The IQS263 offers a new ATA algorithm that

ensures reliable consistent entry and exit

distances of user events which are ideal for

passing SAR test. Furthermore, the IQS263

offers a movement monitoring algorithm, to

help the host controller distinguish between

long term user activations and stuck In

Self Capacitive

mode, the

IQS263

has 3

conditions.

channels. It can be used as 3 discrete buttons

For design information on passing the SAR OR as a slider. It will also have a proximity

qualification testing with Azoteq movement output available.

based sensors, please see the application In

Projected-Capacitive

mode, the

IQS263

note: “AZD073

SAR qualification with Azoteq

has 3 channels. It can be used as 3 discrete

movement-based sensors.

buttons OR a slider but no proximity output will

be available.

5.1 IQS263 Pin Out

1. GND

2. CRX1

3. CRX2

4. VDDHI

5. VREG

10. CTX/PO

9. CRX3

8. SCL

7. SDA

6. RDY

Figure 5.1

GND

CRX0

CRX1

VDDHI

VREG

IQS263 Pin out in MSOP-10.

CTX/PO

CRX2

SCL

SDA

RDY

263

Figure 5.2

Table 5.1

IQS263 Pin out in DFN10.

Function

IQS263 MSOP-10 & DFN10 Pin-outs.

Self-Capacitive

GND

CX1

CX2

VDDHI

VREG

RDY

SDA

SCL

CX3

Projected-Capacitive

GND

Rx1

Rx2

VDDHI

VREG

RDY

SDA

SCL

Rx3

Ground

Sensor Electrode

Power Supply

Regulated Output

Communication Interrupt

Serial Data

Serial Clock

Sensor Electrode

Prox Out/Sensor Electrode

Page 4 of 50

February 2015

IQS263 Datasheet V1.04

IQ Switch

ProxSense

Series

5.2 Reference Design

5.2.1 Projected Schematic

Figure 5.3

5.2.2 Projected Electrodes

IQS263 projected capacitive reference design.

Wheel

Rx0

Rx2

Rx1

Slider

Rx0

Rx1

GND

Rx2

Rx0

5 to 12mm

Up to 8cm. Suggested line thickness: Tx = 1mm; Rx = 0.8mm

Figure 5.4

Example layout of projected wheel OR slider

that wraps around – 0 to 255 coordinates available.

IQS263 Datasheet V1.04

Page 5 of 50

February 2015

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