AIROC™ CYW20835 Bluetooth® LE system on chip

CYW20835 Features


The AIROC™ CYW20835 Bluetooth® LE SoC is a Bluetooth® 5.2 core spec compliant device for IoT applications. Manufactured using the industry's advanced 40 nm CMOS low-power process, the CYW20835 employs high levels of integration to minimize external components, reducing the device footprint and the costs associated with implementing Bluetooth® Low Energy solutions.

The AIROC™ CYW20835 Bluetooth® LE SoC is designed to support the entire spectrum of Bluetooth® Low Energy use cases for home automation, accessory, sensors (medical, home, security, and industrial), lighting, Bluetooth® Mesh, wireless input devices including game controllers, remote controls, keyboards, and joysticks or any Bluetooth® LE connected IoT application.


  • 96-MHz ARM® Cortex®-M4 microcontroller unit MCU with floating point unit (FPU)
  • Supports serial wire debug (SWD)
  • Runs Bluetooth stack and application

Bluetooth Sub-System

  • Complies with Bluetooth core specification version 5.2 with LE 2-Mbps support
  • Supports Adaptive Frequency Hopping (AFH)
  • Programmable TX power up to 12 dBm
  • Rx sensitivity -94.5 dBm (Bluetooth LE)


  • 6x 16-bit PWMs​
  • 24 GPIOs
  • Analog and Digital microphone interfaces
  • I2C, I2S, UART, SPI and PCM interfaces
  • Up to 8x20 programmable key-scanning matrix interface

CYW20835 Modules

Infineon's AIROC™ CYW20835 Bluetooth® LE modules are fully integrated with onboard crystal oscillator, passive components, flash memory, and the CYW20835 system on chip. These highly integrated modules are also globally certified to support fast time-to-market. The AIROC™ CYBLE-343072-02 is supported by the AIROC™ Bluetooth® SDK in ModusToolbox™ software and tools with code examples to support rapid development of embedded Bluetooth® LE applications.

CYW20835 Block Diagram

ModusToolbox™ and AIROC™ Bluetooth SDK


The AIROC™ Bluetooth® SDK contains everything you need to build Bluetooth® Low Energy applications for the CYW20835. The AIROC™ Bluetooth® SDK along with the ModusToolbox™ and Bluetooth® configurator tools form a powerful but easy to use toolset that helps you create amazing Bluetooth® enabled IoT solutions such as beacons, trackers, wearables, HID device (remotes, mice, and keyboards), sensors (medical, home, security, and industrial), lighting, Bluetooth® Mesh, and home automation platforms.

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AIROC™ CYW20835 Bluetooth® LE Module Evaluation Kit (CYBLE-343072-EVAL-M2B, Integrated PCB Antenna​)


The Infineon AIROC™ CYW20835 Bluetooth® LE 5.2 Module Evaluation Kit (CYBLE-343072-EVAL-M2B) enables evaluation, prototyping, and development of a wide array of IoT applications using the AIROC™ CYW20835, an ultra-low-power Bluetooth® LE 5.2 system on a chip.

The AIROC™ CYW20835 Bluetooth® LE system on chip provides reliable Bluetooth® LE connectivity, core spec compliant to 5.2, along with high-performance compute capability integrating an Arm® Cortex®-M4 processor with floating point unit. It is a highly integrated device integrating multiple serial interfaces, PWMs, analog and digital microphone interfaces, and more. The AIROC™ CYW20835 is designed to support the entire spectrum of Bluetooth® Low Energy use cases for home automation, lighting, accessory, HID, medical, industrial, and sensor nodes as well as being fully Bluetooth® Mesh compliant. This Evaluation Kit (CYBLE-343072-EVAL-M2B) includes an Infineon in-house AIROC™ Bluetooth® Module hosting the AIROC™ CYW20835 that is globally certified and has PCB antenna integrated, rapidly reducing time-to-market.

The AIROC™ CYW20835 Bluetooth® LE 5.2 Module Evaluation Kit (CYBLE-343072-EVAL-M2B) is supported in the AIROC™ Bluetooth® SDK within ModusToolbox™ Software and Tools with copious code examples and documentation enablement for Bluetooth® LE data transfer, HID and Bluetooth® Mesh use cases.

Kit Features:

  • AIROC™ CYW20835 Bluetooth® LE 5.2 Module (CYBLE-343072-02) with integrated PCB Antenna
  • Arduino compatible headers for hardware expansion
  • On-board sensors – an ambient light sensor, thermistor, footprint for analog microphone, and footprint for Infineon digital microphone
  • User switches and LEDs
  • USB connector for power, programming and USB-UART bridge

Kit Contents:

  • Base Board - CYW9BTM2BASE1
  • CYBLE-343072-EVAL Bluetooth® Module Evaluation Board (mounted onto baseboard)
  • USB Standard-A to Micro-B cable