Azoteq IQS227BEV02 User Manual

Azoteq IQS227BEV02 User Manual

Evaluation kit

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1
Introduction .............................................................................................................................. 1
2
Standalone/Data Streaming EV-Kit .......................................................................................... 1
2.1
Overview of module boards .............................................................................................. 2
3
Standalone Operation .............................................................................................................. 2
3.1
Powering on the device .................................................................................................... 2
3.2
Jumper placement ............................................................................................................ 3
3.3
Device operation .............................................................................................................. 3
4
Data Streaming Operation ....................................................................................................... 4
4.1
Setup for data streaming on computer .............................................................................. 4
4.2
Using the GUI with the IQS227B IC .................................................................................. 4
4.3
Using the GUI with the IQS228B IC .................................................................................. 7
4.4
Configuring the IQS227B and IQS228B ............................................................................ 8
5
Communications Interface ....................................................................................................... 8
6
Reference Designs .................................................................................................................. 9

1 Introduction

This user guide describes the operation of the IQS227-228BEV02 Evaluation Kit. The EV-Kit
consists of ten parts, the main board device, six separate plug-in module boards and three
overlays. Additional unprogrammed IC's (3 x IQS227B and 3 x IQS228B) are included. To
visualise raw data from the EV-Kit, the main board can be interfaced to any personal computer
with USB support, and IQS227 or IQS228 software GUI (Graphical User Interface). The purpose of
the IQS227-228BEV02 EV-Kit is to help application and development engineers in evaluating the
IQS227B and IQS228B proximity and touch sensor in self-capacitance mode.

2 Standalone/Data Streaming EV-Kit

Figure 2.1 illustrates the evaluation kit main board and a plug-in module board.
Main board
Figure 2.1 IQS227B/228B main board with plugged in IQS228B module board
Copyright © Azoteq (Pty) Ltd 2022
All Rights Reserved
IQ Switch
ProxSense
IQS227/8BEV02 User Guide
®
IQ Switch
- ProxSense

Table of Contents

Module board
IQS227-228BEV02 Evaluation Kit User Guide
Revision 1.0
®
®
Series
®
Series
Page 1 of 10
November 2022

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Summary of Contents for Azoteq IQS227BEV02

  • Page 1: Table Of Contents

    Figure 2.1 illustrates the evaluation kit main board and a plug-in module board. Module board Main board Figure 2.1 IQS227B/228B main board with plugged in IQS228B module board Copyright © Azoteq (Pty) Ltd 2022 IQS227-228BEV02 Evaluation Kit User Guide Page 1 of 10 All Rights Reserved Revision 1.0...
  • Page 2: Overview Of Module Boards

    Reference designs for IQS227B and IQS228B with user proximity and touch detection. • Used in Data Streaming Mode: EV-Kit requires Micro-USB cable with Azoteq CT210A. The EV-Kit main board can also draw power from a USB source by means of the USB Type-C connector provided on the main board (optional).
  • Page 3: Jumper Placement

    If the LED’s do not turn on when touching the button, release the button or put the device on a table and try again. Copyright © Azoteq (Pty) Ltd 2022 IQS227-228BEV02 Evaluation Kit User Guide Page 3 of 10 All Rights Reserved Revision 1.0...
  • Page 4: Data Streaming Operation

    Series 4 Data Streaming Operation The device can also be connected to a computer via the Azoteq CT210A and the data streamed. The difference between the module boards will become clear when visualised on a computer. 4.1 Setup for data streaming on computer...
  • Page 5 Target value by adjusting the Compensation and Multiplier fields. The Multiplier field acts as a course adjustment to the Count value and the Compensation field acts as a fine adjustment. Copyright © Azoteq (Pty) Ltd 2022 IQS227-228BEV02 Evaluation Kit User Guide...
  • Page 6 Prox mode. Figure 4.4 shows what a typical Prox event should look like. Note that the Counts and LTA bars have turned blue to indicate a Prox event and the Filter Halt is Active in the Indicators menu. Copyright © Azoteq (Pty) Ltd 2022 IQS227-228BEV02 Evaluation Kit User Guide Page 6 of 10 All Rights Reserved Revision 1.0...
  • Page 7: Using The Gui With The Iqs228B Ic

    The IQS228B IC operates similarly to the IQS227B IC when in Prox mode, but differently when in Touch mode. Place the IQS228B Green module board in the socket and evaluate the board. The Copyright © Azoteq (Pty) Ltd 2022 IQS227-228BEV02 Evaluation Kit User Guide...
  • Page 8: Configuring The Iqs227B And Iqs228B

    Black module boards to observe the different sensitivity levels obtainable. 4.4 Configuring the IQS227B and IQS228B Use the USBProg program, available from the Azoteq website, to burn fuses on the IQS227B IC or IQS228B IC. Consult the IQS227B and IQS228B datasheets for more information available on the Azoteq website.
  • Page 9: Reference Designs

    Figure 6.1 and Figure 6.2 shows reference designs for the main board and the module boards. Figure 6.1 IQS227-228BEV02 Main board design Figure 6.2 IQS227-228BEV02 Module board design Copyright © Azoteq (Pty) Ltd 2022 IQS227-228BEV02 Evaluation Kit User Guide Page 9 of 10 All Rights Reserved Revision 1.0...
  • Page 10 Azoteq products are not authorized for use as critical components in life support devices or systems.

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