Azoteq IQ Switch ProxSense IQS259EV02 User manual

IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2012 IQS259EV02 Evaluation Kit User Manual Page 1 of 4
All Rights Reserved. Revision 1.0 September 2012
IQS259EV02 Evaluation Kit User Manual
IQ Switch®- ProxSense®Series
Table of Contents
IQS259EV02 EVALUATION KIT USER MANUAL............................................................................................................ 1
1INTRODUCTION............................................................................................................................................. 1
2EV-KIT MAINBOARD...................................................................................................................................... 1
3MODULE BOARDS......................................................................................................................................... 2
4REFERENCE DESIGNS..................................................................................................................................... 4
1 Introduction
This user manual describes the operation of
the IQS259EV02 Evaluation Kit. The EV-Kit is
manufactured in two parts, consisting of a
mainboard, and a separate plug-in module
board. The purpose of the IQS259EV02 EV-
Kit is to facilitate application and development
engineers in evaluating the IQS259 projected
capacitive proximity and touch sensor.
2 EV-Kit Mainboard
Figure 2.1 illustrates the evaluation kit
mainboard and the supplied controller module.
The mainboard supplies power and other
functions to the controller module boards and
is easily operated. Simply plug in the desired
module board into the mainboard and turn on
the mainboard by means of the on/off slide
switch (if using battery or external power).
Features included in the EV-Kit mainboard:
Modular design: Connect the supplied IC
module into the mainboard, or wire into a
prototype for rapid prototyping
Reference design for IQS259 with user
proximity & touch detection ability
GUI interface indicates proximity AND
contact to the buttons
I2CTM Data Streaming Mode: For details,
see the IQS259 datasheet (EV-KIT
requires Azoteq Configuration Tool or
Data Streamer)
Figure 2.1 IQS259EV02 Mainboard
and controller module
Figure 2.2 illustrates the bottom view of the
EV-Kit mainboard. The EV-Kit is powered by
the Azoteq CTxxx or optionally two 3V coin cell
batteries in series, which is regulated to 3.3V
and supplied to the module board. The EV-Kit
mainboard can also draw power from a USB
source by means of the mini-USB connector
provided on the mainboard.
Figure 2.2 Bottom view of EV-Kit
mainboard
Programming
and data
streaming
header
USB
Power
Port

IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2012 IQS259EV02 Evaluation Kit User Manual Page 2 of 4
All Rights Reserved. Revision 1.0 September 2012
The mainboard includes a programming and
data streaming header as also illustrated in
Figure 2.2.
The EV-Kit is interfaced to a personal
computer for data streaming, by means of the
Azoteq Configuration Tool (CTxxx). For visual
data streaming please utilise the IQS259 GUI
and USBProg software, provided on the
Azoteq website. (http://www.azoteq.com).
3 Module Boards
3.1 IQS259 Module Board
Figure 3.1 illustrates the IQS259 Module
board. Its features include:
9 Channel Projected Capacitive IC
I2CTM Custom data streaming
Small and compact PCB layout, which is
easily wired to prototype applications
Figure 3.1 IQS259 module board
Descriptions of the components are given in
Table 3.1.
Table 3.1 IQS259 Module board
component description
Component Purpose Typical value
C1, C2 Power
supply
decoupling
capacitors
1µF,
100pF
C3, C4
Internal
regulator
decoupling
capacitors
1µF,
100pF
R7 SDA
Pullup
Resistor
20 kΩ
R8 SCL Pullup
Resistor 20 kΩ
R9 RDY
Pullup
Resistor
20 kΩ
R1, R2, R3,
R4, R5, R6 Sense antenna
(CRX and
CTX)
series
resistors
(Added
ESD
Protection)
470Ω

IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2012 IQS259EV02 Evaluation Kit User Manual Page 3 of 4
All Rights Reserved. Revision 1.0 September 2012
4 IQS259 GUI Interface
For operation and data visualization, it is
necessary to interface the IQS259 module to a
personal computer by means of the Azoteq
CT200 Configuration Tool. The IQS259 GUI is
used to stream and visualize data in real-time.
Figure 4.1 IQS259 Graphical User Interface
The IQS259 Software GUI can be downloaded
from the following link:
http://www.azoteq.com/images/stories/software
/azoteq_iqs259_setup.zip
Plug in the IQS259 module into the
Mainboard
Connect the Mainboard to the Azoteq CT
Run the IQS259 Software GUI and Click
on “Start”.
The GUI display is illustrated in Figure 4.1
where channel 3 shows a valid touch.

IQ Switch®
ProxSense®Series
Copyright © Azoteq (Pty) Ltd 2012 IQS259EV02 Evaluation Kit User Manual Page 4 of 4
All Rights Reserved. Revision 1.0 September 2012
5 Reference Design
5.1 IQS259 Reference design
Figure 5.1 IQS259 Reference design
The following patents relate to the device or usage of the device: US 6,249,089 B1, US 6,621,225
B2, US 6,650,066 B2, US 6,952,084 B2, US 6,984,900 B1, US 7,084,526 B2, US 7,084,531 B2,
US 7,119,459 B2, US 7,265,494 B2, US 7,291,940 B2, US 7,329,970 B2, US 7,336,037 B2, US
7,443,101 B2, US 7,466,040 B2, US 7,498,749 B2, US 7,528,508 B2, US 7,755,219 B2, US
7,772,781, US 7,781,980 B2, US 7,915,765 B2, EP 1 120 018 B1, EP 1 206 168 B1, EP 1 308 913
B1, EP 1 530 178 B1, ZL 99 8 14357.X, AUS 761094
IQ Switch®, ProxSense®, LightSense™, AirButton®and the logo are
trademarks of Azoteq.
The information in this Datasheet is believed to be accurate at the time of publication. Azoteq
assumes no liability arising from the use of the information or the product. The applications
mentioned herein are used solely for the purpose of illustration and Azoteq makes no warranty
or representation that such applications will be suitable without further modification, nor
recommends the use of its products for application that may present a risk to human life due to
malfunction or otherwise. Azoteq products are not authorized for use as critical components in
life support devices or systems. No licenses to patents are granted, implicitly or otherwise,
under any intellectual property rights. Azoteq reserves the right to alter its products without
prior notification. For the most up-to-date information, please refer to www.azoteq.com.
WWW.AZOTEQ.COM
[e-mail]
GND
C3
1uF
VDDHI
C2
1uF
GND
C4
100pF
C1
100pF
CRX0
CRX1
GND
VDDHI R7
20K
R8
20K
SDA
SCL
SDA
SCL
VIN
GND
VDDHI
GND
CTX0
CRX2
CRX0
CRX1
CRX2
CTX1 SCL
CRX0
CRX1
CTX2
R1
470
R2
470
R3
470
R4
470
R5
470
SDA
RDY/RF
CRX2
R6
470
SCL RDY
R9
20K
SDA
1
SCL
2
CRX2
3
NC 13
CTX0
5
GND 6
NC 4
NC 7
CRX1
10
CRX0
9VDDHI 11
VREG 12
NC 8
RDY/RF
15
CTX1
16
CTX2/ICA0
14
TAB 17
U1
IQS259
Connect to sense buttons
(See Appnote: AZD036 for button design
guidelines)
SDA = Serial Data (I2C)
SCL = Serial Clock (I2C)
RDY = Ready Line
Optional: 100pF capacitors for additional RF immunity.