PSoC™ 4000T – Capacitive Sensing MCU | Industry leading capacitive sensing solution with ultra-low power and best in class signal-to-noise ratio

Overview

Best in class low-power capacitive sensing solution with unsurpassed signal-to-noise ratio, liquid tolerance, and multi-sense capabilities coupled with industry leading reliability and robustness.

PSoC™ 4000T microcontrollers expand the PSoC™ 4 product family of Arm® Cortex®-M0+ based microcontrollers and feature Infineon’s 5th Generation high-performance CAPSENSE™ capacitive sensing technology. Infineon’s 5^th Generation CAPSENSE™ technology provides 10x higher SNR (signal-to-noise ratio) performance with 10x lower consumption than previous generations of CAPSENSE™.

The PSoC™ 4000T family provides an easy upgrade path for PSoC™ 4000 and PSoC™ 4000S based designs to utilize the advanced 5th generation CAPSENSE™ via software and package compatibility. PSoC™ 4000T series enables a variety of low-power applications including wearable, hearable, and smart connected IoT devices.

Features:

32-bit MCU subsystem
- 48-MHz Arm® Cortex®-M0+ CPU with single-cycle multiply
- Up to 64 KB of flash with read accelerator.
- Up to 8 KB of SRAM
5th generation CAPSENSE™ technology; supports both, self and mutual capacitive sensing techniques.
16 sensor inputs
- Up to 16 self-capacitive inputs
- Up to 64 mutual-capacitive inputs
Up to 21 Programmable pins
Two 16 bit-time/counter/pulse-width modulator (TCPWW) blocks
Two configurable serial communication blocks (SCBs) to support I2C, SPI or UART interface.
Superior user experience: Proximity, Touch, Slider, Force-touch, Finger-tracking.
Best-in-class signal-to-noise ratio
Operating Voltage: 1.71V to 5.5V
Deep sleep mode at 6 µA through “Always-on” sensing
Active touch detection and tracking at 200 µA (average)
Easily optimize the capacitive sensing design through Infineon-supplied middleware software.
Includes board support packages (BSPs), peripheral driver library (PDL), and middleware such as CAPSENSE™

Block Diagram

5th generation CAPSENSE™

Ultra-Low Power: One of the industries’ first always-on touch sensing feature enables HMI operation with very low active and standby power consumption enabling longer battery life on battery powered products such as wearables and hearables.

Signal-to-Noise Ratio: Best in class signal-to-noise ratio improves reliability, provides a seamless user experience, faster refresh rate, and optimized average power consumption.

Liquid Tolerance: Reliable operation under wet and high moisture conditions prevents false activation from a variety of liquids, including highly conductive salty water.

Multi-Sense: Supports combination of multiple sensing methods (self, mutual) and a variety of interfaces (touch, slider, force-touch, proximity, finger-tracking) to enable a superior user experience.

Advanced Proximity Interface: Long distance proximity detection up to 30cm. Directional proximity with configurable gestures.

ModusToolbox™ Software

ModusToolbox™ Software is a collection of development tools and embedded resources supporting Infineon devices.

The ModusToolbox™ Tools Package includes desktop applications that enable the creation of new embedded projects, managing software resources, configuring device peripherals and middleware, and multiple IDE options for compiling, programming, and debugging. Windows, Linux & MacOS are supported.

These ModusToolbox™ applications utilize an extensive collection of GitHub-hosted repositories comprised of code examples, board support packages, and middleware from Infineon and partners. Middleware libraries include CAPSENSE™ HMI, connectivity, machine learning, graphics, security, and more.

ModusToolbox™ Software currently supports application development within the following product families:

32-bit PSoC™ Arm® Cortex® MCUs
32-bit XMC™ Industrial MCUs Arm® Cortex®-M
32-bit TRAVEO™ T2G Arm® Cortex® MCUs
AIROC™ Connected MCUs
AIROC™ Bluetooth®
USB-C Power Delivery Controllers
Wireless Charging ICs

Drivers, middleware, and code examples are available for many Infineon products, including:

AIROC™ Wi-Fi + Bluetooth®
OPTIGA™ Trust
XENSIV™ Sensors

Ask the PSoC™ 4 community

Infineon Developer Community is available 24x7 for you to connect and network with engineers across the globe. Get help from Infineon support engineers, and members to solve your design challenges anytime, from anywhere, in any topic, and in your preferred language.

Ask the PSoC™ 4 community

Getting Started