User's Manual

3. Operational Description
-SIGFOX
SIGFOX able to transmit and receive messages using the SIGFOX network.
This module address the RC1(Europe), RC2(North America), RC3(Japan), RC4(Australia, New Zealand), and
RC5(Korea).
-BLE
Bluetooth 5.0 optimized for low-power applications.
The RADIO contains a 2.4 GHz radio receiver and a 2.4 GHz radio transmitter that is compatible with
BlueNRG-2 proprietary 1 Mbps radio modes in addition to 1 Mbps Bluetooth® low energy mode.
3.1 Features
- SIGFOX
> Sigfox up-link and down-link functionality controlled by CLI commands
> Ultra-low power consumption
> High performance narrow-band Sigfox
- BLE
> BLE single mode system-on-chip compliant with Bluetooth 5.0 specifications
(master/slave and multiple simultaneous roles, LE data packet length extension)
> Cortex-M0 32-bit based architecture core
> Programable 256 kB Flash
> 24 kB RAM with retention (two 12 kB banks)
> External interface: 26 GPIO, 1xSPI, 2xI
2
C, 1xUART, 2xCrystal (32.768 KHz, 32 MHz) and 10-bit ADC
3.2 Time base of the RF frequency
-SIGFOX
For Sigfox RF frequency, a TCXO(50MHz) is a clock reference.
-BLE
Using external 32.768 kHz crystal for RTC.
Using external 32 MHz crystal for BLE.
3.3 Transmission
-SIGFOX
The Tx path produces a DBPSK-modulated signal. Modulate RF signal generated by the synthesizer. The
modulated RF signal is fed to the integrated RX/TX switch and antenna interface and then out of the S2-LP.
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