The SF01 is a miniaturized SIGFOX module for RCZ2 and RCZ4. It is suitable for using as a SIGFOX modem, communication through UART interface (CLI/AT commands), as well as the main application processor embedding the user code in its onboard MCU.

SF01 module is a cost-effective, high performance, low-power solution to be used in a wide range of products. It presents very low current consumption both in active and low-power MCU modes providing excellent battery lifetime and allowing for operation on small batteries and in energy harvesting applications.



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  • SIGFOX™ Module for RCZ2 and RCZ4;

  • CLI/AT SIGFOX™ modem operation mode capability;

  • Programmable RF output power up to +24 dBm CW;

  • TX mode current consumption: 170mA @ 22.5dBm;

  • RX mode current consumption: 20mA;

  • Excellent performance of receiver sensitivity: down to -130 dBm (@600bps, GFSK);

MCU, Memory and Peripherals:

  • High performance, low-power Cortex-M0™ 32-bit microcontroller (BlueNRG-1);

  • Programmable 160kB Flash;

  • MCU provides capability to embed user application code;

  • 110 kB Flash free for user embedded application

  • 24kB RAM with retention (two 12 kB banks)

  • 1xUART interface;

  • 1xSPI interface;

  • 1xI2C interface;

  • Up to 11 GPIOs;

  • Watch dog;

  • DMA controller;

  • Battery voltage and temperature sensors;

  • 1 single ended or differential 10-bit ADC analog input;

  • Debug SWD interface;


  • Voltage range: 2.7V up to 3.6V;

  • Small form factor: [13mm (L) x 17.5mm (W) x 2.2 mm (H)];

  • Package type: 31-pin SMD;

  • Operating temperature: -30⁰C up to +85⁰C 

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Reference designs


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