The Chili2S module is a fully-integrated module for Thread / IEEE 802.15.4 applications. It is intended as a board-mounted module, integrated into a larger system. It combines the an ARM Cortex-M23 TrustZone microcontroller with the Cascoda CA-8211 2.4 GHz IEEE 802.15.4 transceiver modem. The CA-8211 is an IEEE 802.15.4 radio coprocessor/modem with integrated MAC and an exceptional receive sensitivity of -105dBm. The ARM Cortex-M23 microcontroller has cutting-edge security features such as TrustZone, and excellent low power performance. The Chili2S has counterpart module, the double-sided Chili2D, which adds a USB connector and power management for developing Thread / IEEE 802.15.4 applications.

  • Thread-certified device for every role
  • Industry-leading receive sensitivity of -105dBm
  • Programmable transmit power of -3dBm to +9dBm
  • Industry-leading link budget of 114dB
  • Integrated MAC low-power co-processor
  • Industrial temperature range: -40°C to +85°C
  • Wide supply voltage range: 2.1V to 3.6V
  • Chip antenna and all other RF components integrated on module
  • 16 MHz crystal for system clock and 32.768 kHz crystal for low-power RTC functionality
  • Module size: 27.00 x 21.05 mm

ARM® Cortex®-M23 TrustZone® MCU

  • Arm® Cortex®-M23 Architecture
  • Highly robust security for IoT applications
  • 512 KB dual-bank application ROM (APROM) for OverThe-Air (OTA) upgrade
  • 96 KB on-chip SRAM
  • Communication interfaces (UART, I2C, SPI, USB)
  • Analog Interfaces (ADC, DAC, Comp)
  • Smart Card (ISO 7816) and SD Card Interfaces

World-class energy consumption

  • World’s best receiver efficiency :
    14mA (42mW) at -105dBm sensitivity (0.0316nW)
    Figure of Merit (FoM) 0.75 (mW*nW)-1
  • 19mA at +9dBm transmit power
  • 3µA sleep mode

Development Tools

  • Certified Thread stack based on OpenThread
  • Support for the FreeRTOS operating system
  • Optimised interface for the M2351 MCU and the CA8211 hardware MAC
  • Module can be detached node running the network stack and application or coprocessor for hosts running Linux within a Thread mesh network
  • Cascoda SDK, making full use of CMake as a build system
  • Code available open-source on GitHub


Please download the Chili2S datasheet from the link below:
Chili2S_datasheet Please take note of our disclaimer.