Overview
Description
Topics
Improvement of Sensor Drive Pulse Frequency Determined by automatic tuning (CTSU2)
Added Emulator/Serial selection step to Workflow
The notes in the following tool news have been fixed.
ーRENESAS TOOL NEWS : R20TS1158EJ0100
[Notes] e² studio 2025-07 not compatible with Reality AI Utilities, AI Navigator, QE for Capacitive Touch, QE for AFE and other QE products
Improvement of Sensor Drive Pulse Frequency Determined by automatic tuning (CTSU2)
Added Emulator/Serial selection step to Workflow
The notes in the following tool news have been fixed.
ーRENESAS TOOL NEWS : R20TS1158EJ0100
[Notes] e² studio 2025-07 not compatible with Reality AI Utilities, AI Navigator, QE for Capacitive Touch, QE for AFE and other QE products
QE for Capacitive Touch is a tool for assisting in the development of embedded systems that include the use of capacitive touch keys.
This tool simplifies the initial settings of the touch user interface and the tuning of the sensitivity.
This product is available free of charge.
Features
- The GUI makes it easy for even a beginner to develop touch user interfaces.
- Automatic tuning for touch sensor sensitivity
- Learn More
Release Information
| Product Name | Latest Ver. | Released | Target Device (Note1) | Details of upgrade | Download | Operating Environment |
|---|---|---|---|---|---|---|
| QE for Capacitive Touch | V4.2.0 | Aug 01, 2025 | RA Family RL78 Family RX Family Renesas SynergyTM | See Release Note | Download | e² studio plug-in(Note2)(Note3) Operating Environment |
Notes
- For details on supported MCUs, refer to the section Target Devices.
- We recommend using the e² studio installer provided for the RA Family for customers using RA Family. For details, see the GitHub page on the Flexible Software Package (FSP).
- For development of Renesas Synergy™, we recommend to install e² studio by platform installer included SSP(Synergy Software Package).
For details
Target Devices
Design & Development
Sample Code
Related Boards & Kits
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Explore
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Videos & Training
QE for Capacitive Touch from Renesas enables the development of touch sensors by simply following a guide on a GUI, thus contributing to shortening the development period for touch sensor functions that take advantage of the performance of Capacitive Sensing Unit (CTSU2).
Related Resources
- Capacitive Touch Sensor Solutions
- QE for Capacitive Touch: Development Assistance Tool for Capacitive Touch Sensors
- Getting Started with QE for Capacitive Touch for RA [this video]
- QE for Capacitive Touch Tutorial: Step 1 Configuration for RA
- QE for Capacitive Touch Tutorial: Step 2 Tuning for RA
- QE for Capacitive Touch Tutorial: Step 3 Monitoring for RA
News & Blog Posts
Additional Details
Features
The GUI makes it easy for even a beginner to develop touch user interfaces.
Simple GUI operations allow even a beginner to create the configuration for use with a touch user interface, monitor the state of input through the touch sensors, and adjust parameters.
Furthermore, since this tool can adjust tuning parameters and reflect the results through display in real-time, it is very useful for finding the appropriate parameters in various situations, such as in the presence of much static electricity or in cases of use with wet hands.
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Automatic tuning for touch sensor sensitivity
This tool enables automatic tuning for the sensitivity of the capacitive touch sensors. You can complete basic tuning within a few minutes by following the instructions in the pop-up messages.
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3D gesture recognition
You can develop a gesture application that reacts "by anyone's hand" without any specialized skills just by actually performing the gesture that you want AI to remember on the capacitance sensor.
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Supported Driver and Middleware
| Device | Driver | Version |
|---|---|---|
| RA Family | CSTU (Capacitive Touch Sensing Unit) Driver Flexible Software Package (FSP) Component for RA Family Component name: r_ctsu | V6.0.0 |
| Touch Middleware Flexible Software Package (FSP) Component for RA Family Component name: rm_touch | V6.0.0 | |
| RX Family | Driver for capacitive touch sensor unit RX Family QE CTSU Module Using Firmware Integration Technology Module name: r_ctsu_qe | V3.20 |
| Middleware for touch sensors RX Family QE Touch Module Using Firmware Integration Technology Module name: rm_touch_qe | V3.20 | |
| RL78 Family | Driver for capacitive touch sensor unit RL78 Family QE CTSU Module Software Integration System Module name: r_ctsu | V2.20 |
| Middleware for touch sensors RL78 Family QE Touch Module Software Integration System Module name: rm_touch | V2.20 | |
| Renesas Synergy | CTSU (Capacitive Touch Sensing Unit) Driver Synergy Software Package (SSP) Component for Renesas Synergy Component name: r_ctsuv2 | V2.6.0 |
| Capacitive Touch Framework Synergy Software Package (SSP) Component for Renesas Synergy Component name: sf_touch_ctsuv2 | V2.6.0 |
See here for details on adding and setting middleware related to QE for Capacitive Touch
The confirmed debugging tools
| Device | E2 emulator | E2 emulator Lite | J-Link |
|---|---|---|---|
| RA Family | ✔ | ✔ | ✔ |
| RX Family | ✔ | ✔ | ✔ |
| RL78 Family | ✔ | ✔ | |
| Renesas Synergy | ✔ |