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Infineon PSoC™ 4000T Microcontrollers (MCUs)

Featuring 5th generation high-performance CAPSENSE™ capacitive sensing technology

Infineon’s PSoC™ 4000T microcontrollers are part of the PSoC™ 4 product family and are designed to be industry leaders in low-power capacitive sensing solutions. These microcontrollers use 5th Generation high-performance CAPSENSE™ capacitive sensing technology which boasts an outstanding signal-to-noise ratio, liquid tolerance, and multi-sense capabilities. Compared to previous generations of CAPSENSE™, the 5th Generation technology provides a 10x higher SNR performance with 10x lower power consumption.

The PSoC™ 4000T family provides an easy upgrade path for PSoC™ 4000 and PSoC™ 4000S based designs to utilize the advanced 5th generation CAPSENSE™ through software and package compatibility. This means that upgrading your design to take advantage of cutting-edge technology is simple and straightforward.


  • 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™


  • 5th Gen CAPSENSE™:
    • Better noise immunity, thicker cover-lens, small form factor, improved proximity sensing and direction sensing
    • Greater flexibility in PCB routing, supports larger and miniature sensors, different materials
    • Low power in standby and active modes, longer battery life
    • Improved touch response faster than most displays for a smooth experience
    • Free up CPU to perform faster control loops or other peripheral operations, lower power


  • Wearables
  • Hearables
  • Smart connected IoT devices


Infineon’s 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.

Learn more: ModusToolbox™ Software

ModusToolbox™ training videos


Getting Started


PSoC™ 4000T CAPSENSE™ Prototyping Kit (CY8CPROTO-040T)