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Comprehensive Solutions for Touch Sensing
Core-independent touch dsPIC33 DSCs offer leading-edge capacitive touch sensing performance with robustness, water and moisture rejection, immunity for conducted noise, functional safety readiness (ISO 26262, IEC 61508 and IEC 60730) and security.
- ISO 26262 Functional Safety Touch
- Target Use Cases
We offer the ISO26262 Functional Safety Touch packages for Core-Independent Touch DSCs to enable you to develop automotive safety-compliant touch applications. Below are the highlights of the ISO26262 Functional Safety Touch packages*.
- ASIL-B and ASPICE L1-compliant functional safety touch library
- Functional Safety Manual
- Functional safety touch reference application with user’s guide
- Functional safety library integration guide
- Statis and dynamic code reports (Advanced package)
- Safety analysis reports
* Functional Safety packages for diagnostics for the dsPIC33C DSCs must be purchased separately.
Touch Features of dsPIC33 DSCs
- Self-sensing
- Mutual sensing*
- Driven Shield and Driven Shield+ modes for state-of-the-art water tolerance
- Ready-to-use touch libraries in MPLAB® Code Configurator (MCC)
- ASIL-B and ASPICE-compliant safety touch library packages
- ISO 26262 and IEC 61508 functional safety packages for DSCs
- Boost mode to increase sensing speed and/or increase SNR*
- Automotive qualified for silicon, robustness, noise sustainability and emissions
Target Use Cases
Leverage our MCC Touch Library to integrate touch features and address a variety of use cases, including:
- Buttons, sliders and wheels (out of the box from MCC)
- Level sensing
- Hands-Off Detection (HOD) with or without heating
- Proximity sensing
- Touchpads with surface gestures
Integrated Touch Controller (ITC) on dsPIC33A DSCs
Highlights:
- ITC is a hardware engine that executes the command sequences on the sensor inputs
- A flexible and fully independent hardware engine for Capacitive Voltage Divider (CVD) measurements
- Out-of-the-box hardcoded touch sequences for beginners
- User-defined custom capacitive sensing sequence for advanced innovative designs
- Configurable capacitor array for obtaining maximum touch sensitivity
- Wide range of touch-triggering sources
- Up to 64 conversion records and up to three conversion lists
Peripheral Trigger Generator (PTG) on dsPIC33C DSCs
Highlights:
- PTG is a user-programmable sequencer automating CVD sequencing and measurements
- PTG coordinates with Analog-to-Digital Converter (ADC) via Direct Memory Access (DMA) to execute the touch sample acquisition stage without CPU intervention
- Step queue with 32 entries to store step commands
Find the Right dsPIC33 DSC For Your Design
Similar Devices
Getting Started With Capacitive Touch Sensing Designs Has Never Been Easier
Our sophisticated and user-friendly touch ecosystem covers all Microchip MCUs to bring your touch design from a concept to a final product quickly and smoothly. Complete your touch design in a few simple steps:
- Choose the right core-independent touch dsPIC33 DSC for your application from the parametric chart above.
- Use MPLAB Code Configurator (MCC) to configure drivers and libraries and generate touch code specific to the selected device. Download the MCC here
- Create a project, import code, build and compile the application using MPLAB X Integrated Development Environament (IDE) and the MPLAB XC-DSC compiler.
- Troubleshoot runtime behavior and tune the output parameters as necessary with the help of MPLAB Data Visualizer.
The touch ecosystem and library APIs remain the same across device families, including PIC®, AVR® and SAM MCUs and dsPIC® DSCs, to seamlessly migrate based on system requirements.
Note: Touch library for dsPIC33A will be rolling out soon in MCC. Contact us to get early access
- Featured Hardware Tools
- Software Tools
Curiosity Platform Development Board
Part Number: EV74H48A
This fully featured development and demonstration board enables you to explore the capabilities of the Integrated Touch Controller (ITC) peripheral on the dsPIC33A DSCs. The board operation requires the insertion of a 120-pin general-purpose Dual, In-Line Module (DIM) that includes a dsPIC33A DSC.
This board has touch buttons, CAN/CAN FD driver and two Xplained Pro headers to interface touch extension boards.
dsPIC33CK Touch-CAN-LIN Curiosity Development Board
Part Number: EV97U97A
This board simplifies the evaluation of capacitive touch using core independent touch DSCs. This board has an on-board touch buttons, CAN/CAN FD, LIN transceivers and two Xplained Pro connectors to interface touch extension boards.
dsPIC33CK Curiosity Nano Board
Part Number: EV88G73A
This simple board can help you quickly prototype your touch application with the Curiosity Nano Touch Adapter and touch extension boards.
Curiosity Nano Touch Adapter
Part Number: AC80T88A
The Curiosity Nano Touch Adapter is a hardware extension platform to simplify the connection between Curiosity Nano MCU evaluation boards and Xplained Pro touch extension boards.
T7 Xplained Pro Water-Tolerant Touch
Part Number: ATQT7-XPRO
This extension board evaluates the water and noise robustness of self-capacitance touch using driven shield or Driven Shield+ technology.
T8 Xplained Pro Water-Tolerant 2D Touch Surface
Part Number: AC164161
This extension board easily evaluates the 2D touch surface library by demonstrating water tolerance and noise immunity on a touchpad.
T9 Xplained Pro Mutual Capacitance
Part Number: AC89D55A
This extension board demonstrates Metal over Cap (MoC) touch. The board connects via an XPRO connector to the compatible dsPIC33CK Touch-CAN-LIN Curiosity Board or dsPIC33CK Curiosity Nano Board using the Curiosity Nano Touch Adapter.
BIST Xplained Pro Extension Kit
Part Number: AC11C60A
The board connects compatible development boards with Xplained Pro connectors and touch extension boards to enable the emulation of pin fault conditions in functional safety-relevant projects.
MPLAB® Code Configurator (MCC)
MCC is a free graphical programming environment that generates C code for different touch sensing use cases that you can insert into your project.
MPLAB® X IDE
MPLAB X IDE is a single Integrated Development Environment (IDE) that supports all dsPIC33 DSCs.
MPLAB® XC-DSC Compiler
MPLAB XC-DSC compiler is a comprehensive solution for your software development that integrates with MPLAB X IDE to provide a full graphical front-end.
MPLAB® Discover
MPLAB Discover is a catalog of fully configured and complete source code, projects, examples and software applications.
MPLAB® Data Visualizer
MPLAB Data Visualizer is a free debugging tool that graphically displays runtime variables in an embedded application.
Automotive Electronic Control Unit (ECU) Demonstration Application
This demo application showcases the use of high-performance, real-time dsPIC33C DSCs to meet the security and AUTOSAR requirements and implement a variety of automotive ECU functions.
dsPIC DSCs: Your Solution to Overcome Various Touch-Sensing Challenges
Learn how Microchip’s dsPIC33 Digital Signal Controllers (DSCs) with core-independent touch address the challenges of implementing robust capacitive touch-sensing designs in automotive and industrial applications that require precision touch, faster response, robustness, functional safety and security.