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The user guide introduces the development tools available for the product and guides the setup of
Contents
2.1
Step 1: GUI Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Step 2: Launch GUI Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3
Step 3: Hardware Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4
2.5
Step 5: Initiate IQS323 Communication (Streaming) . . . . . . . . . . . . . . . . . .
2.6
Step 6: Acknowledge Reset and Streaming Mode . . . . . . . . . . . . . . . . . . . .
2.7
Step 7: Load Pre-Configured H-File (Demo Button) . . . . . . . . . . . . . . . . . . .
3.1
IQS323 Streaming Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1
Bar Graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.2
Scope View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.3
Slider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2
Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3
Export Device Configuration to H-File . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4
Import Preconfigured H-File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5
Command Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1
Acknowledge Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2
Soft Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.3
ATI All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.4
Reseed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6
Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.1
System Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.2
Gestures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1
IQS323EVO1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.1
General-Purpose Stamp Module . . . . . . . . . . . . . . . . . . . . . . . .
4.2
IQS323EVO2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.1
Touch Slider Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2
Touch Buttons Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.3
Inductive Sensing Module . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copyright © Azoteq 2025
All Rights Reserved
®
IQ Switch
®
ProxFusion
Series
IQS323 User Guide
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IQS323 User Guide
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March 2025

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Summary of Contents for Azoteq ProxFusion IQS323

  • Page 1: Table Of Contents

    4.2.3 Inductive Sensing Module ......Copyright © Azoteq 2025 IQS323 User Guide Page 1 of 22 All Rights Reserved Revision v1.0...
  • Page 2: Introduction

    Inductive sensing module that showcases the use of PCB coils and SMD inductors for proximity and tactile button applications, > Mutual-capacitive touch buttons, > A 3-channel self-capacitive touch slider. Figure 1.2: IQS323EV02 EV Kit Copyright © Azoteq 2025 IQS323 User Guide Page 2 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 3 Capacitive Sensing Design Guide: AZD125 > Inductive Design Layout Guide: AZD115 For IC-specific information, operation, and memory map details, please refer to the IQS323 Datasheet. Copyright © Azoteq 2025 IQS323 User Guide Page 3 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 4: Getting Started

    2 Getting Started This section describes the process of initial device and GUI set-up prior to application-specific tuning. 2.1 Step 1: GUI Software Installation Download and install the Azoteq IQS323 GUI PC Software from the Azoteq website under the Software and Tools page.
  • Page 5: Step 3: Hardware Connections

    ® IQ Switch ® ProxFusion Series Figure 2.2: Main Window of the Azoteq IQS323 GUI 2.3 Step 3: Hardware Connections Connect the DS200 to your PC, using a standard type-C cable. The device under test (DUT), being either an IQS323EV02 EV kit or an application PCBA, can be interfaced with a suitable 10-to-10 pin ribbon cable connection (or application-specific connections), as shown in Figure 2.4 below.
  • Page 6: Step 4: Pc Connection Verification

    It will then verify the DS200 connection and firmware version, displaying a ‘Device Connected’ message in the configuration tool manager section, as shown in the red block in Figure 2.6. Copyright © Azoteq 2025 IQS323 User Guide Page 6 of 22 All Rights Reserved Revision v1.0...
  • Page 7: Step 5: Initiate Iqs323 Communication (Streaming)

    Note: If the connected DS200 device firmware is out of date, an ‘Update available’ button should au- tomatically appear next to the device enumeration. Click this button to launch the Azoteq firmware upgrade tool and update the firmware, as shown in Figure 2.7.
  • Page 8: Step 6: Acknowledge Reset And Streaming Mode

    Figure 2.9: ACK Reset Button The IQS323 starts in streaming mode, as shown in Figure 2.10. The default settings are not an ap- propriate baseline for a production application. Copyright © Azoteq 2025 IQS323 User Guide Page 8 of 22 All Rights Reserved Revision v1.0...
  • Page 9: Step 7: Load Pre-Configured H-File (Demo Button)

    The GUI provides predefined configs for each of the EV kit modules. Open the “User Settings” window, navigate to the first tab named “EV Kit Modules”, and click on the appropriate image to apply the predefined configuration settings for the demo. Refer to Figure 2.11. Copyright © Azoteq 2025 IQS323 User Guide Page 9 of 22 All Rights Reserved Revision v1.0...
  • Page 10 ® ProxFusion Series Figure 2.11: Importing the Predefined Demo Configuration The device may now be configured further via the ‘User Settings’ window. Copyright © Azoteq 2025 IQS323 User Guide Page 10 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 11: Iqs323 Debug And Display Software Overview

    Note: All the signals recorded in the graphs and sliders are read directly from the IC. For more infor- mation regarding the register map, please consult the IQS323 datasheet. Copyright © Azoteq 2025 IQS323 User Guide Page 11 of 22 All Rights Reserved Revision v1.0...
  • Page 12: Bar Graph

    The data in the current view of the scope can be saved to a CSV file. To save the data, first click ‘Pause Streaming’ as shown in Figure 3.3. Copyright © Azoteq 2025 IQS323 User Guide Page 12 of 22 All Rights Reserved Revision v1.0...
  • Page 13 The following window will pop up and prompt the user to select which part of the data should be saved. Select the “Save to CSV" button to save the streamed data. Copyright © Azoteq 2025 IQS323 User Guide Page 13 of 22 All Rights Reserved Revision v1.0...
  • Page 14: Slider

    From here, the desired variables from the IQS323 can be enabled or disabled. To start logging, click the “Start Logging” button, and choose the destination of the CSV log file. Copyright © Azoteq 2025 IQS323 User Guide Page 14 of 22 All Rights Reserved Revision v1.0...
  • Page 15: Export Device Configuration To H-File

    If the device was previously configured and an associated .h-file was exported from the GUI, the file may now be imported into the GUI and loaded onto the IQS323 using the “Import H File" button. Copyright © Azoteq 2025 IQS323 User Guide...
  • Page 16: Command Buttons

    The “Ack Reset” button clears the IQS323’s reset flag by writing the Acknowledge Reset bit to the IC. This should be the first step after powering on any Azoteq IQS-device. On start-up, the IC will set its reset flag to indicate that a reset event has occurred.
  • Page 17: Events

    Gestures: The appropriate flags are set when the IQS323 de- tects one of the following events: • • Hold • Swipe • Flick Figure 3.11: Events Panel Copyright © Azoteq 2025 IQS323 User Guide Page 17 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 18: Reference Design

    100pF 4.7uF PROG 6W-SIL-V RDY/MCLR OUTA 1.0K WEJT61HC-833 1.0nF Outputs PROG/RDY Select PROG 3W-SLink Open OUTA Figure 4.1: General-Purpose Stamp Reference Schematic Copyright © Azoteq 2025 IQS323 User Guide Page 18 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 19: Iqs323Evo2

    Pull Ups PROG GPIO3/LED 3W-SLink Open 1.0K 4.7K 4.7K 4.7K LTST-C230EKT Box Header PROG BOX HEADER-10W-EDGE Figure 4.2: Touch Slider Reference Schematic Copyright © Azoteq 2025 IQS323 User Guide Page 19 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 20: Touch Buttons Module

    Pull Ups PROG GPIO3/LED 3W-SLink Open 1.0K 4.7K 4.7K 4.7K LTST-C230EKT Box Header PROG BOX HEADER-10W-EDGE Figure 4.3: Touch Buttons Reference Schematic Copyright © Azoteq 2025 IQS323 User Guide Page 20 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 21: Inductive Sensing Module

    680R 200R 56pF 100pF 1.0uH PROG BOX HEADER-10W-EDGE Pull Ups GPIO3/LED 1.0K 4.7K 4.7K 4.7K LTST-C230EKT Figure 4.4: Inductive Sensing Reference Schematic Copyright © Azoteq 2025 IQS323 User Guide Page 21 of 22 All Rights Reserved Revision v1.0 March 2025...
  • Page 22: Contact Information

    No licenses to patents are granted, implicitly, express or implied, by estoppel or otherwise, under any intellectual property rights. In the event that any of the abovementioned limitations or exclusions does not apply, it is agreed that Azoteq’s total liability for all losses, damages and causes of action (in contract, tort (including without limitation, negligence) or otherwise) will not exceed the amount already paid by the customer for the products.

This manual is also suitable for:

Proxfusion iqs323ev01Proxfusion iqs323ev02

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