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S2-LP

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Ultra-low power, high performance, sub-1GHz transceiver

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Product overview

Description

The S2-LP is a high performance ultra-low power RF transceiver, intended for RF wireless applications in the sub-1 GHz band. It is designed to operate in both the license-free ISM and SRD frequency bands at 433, 512, 868 and 920 MHz, but can also be programmed to operate at other additional frequencies in the 413-479 MHz, 452-527 MHz, 826-958 MH, 904-1055 MHz bands. The S2-LP supports different modulation schemes: 2(G)FSK, 4(G)FSK, OOK and ASK. The air data rate is programmable from 0.1 to 500 kbps.
The S2-LP can be used in systems with channel spacing down to 1 kHz enabling the narrow band operations.
The S2-LP shows an RF link budget higher than 140 dB for long communication ranges and meets the regulatory requirements applicable in territories worldwide, including Europe, Japan, China and the USA.

All features
Frequency bands:

413-479 MHz (S2-LPQTR)

452-527 MHz (S2-LPCBQTR)

826-958 MHz (S2-LPQTR)

904-1055 MHz (S2-LPCBQTR)

Modulation schemes:

2(G)FSK, 4(G)FSK

OOK, ASK

Air data rate from 0.1 to 500 kbps

Ultra-low power consumption:

7 mA RX

10 mA TX @ +10 dBm

Excellent performance of receiver sensitivity: down to -130 dBm

Excellent receiver selectivity and blocking

Programmable RF output power up to +16 dBm

Programmable RX digital filter

Programmable channel spacing

Fast start-up and frequency synthesizer settling time

Automatic frequency offset compensation, AGC and symbol timing recovery

More than 145 dB RF link budget

Battery indicator and low battery detector

RX and TX 128 bytes FIFO buffers

4-wire SPI interface

Automatic packet acknowledgment and retransmission
Embedded timeout protocol engine

Excellent receiver selectivity (> 80 dB @ 2 MHz)

ST companion integrated balun/filter chips are available

Antenna diversity algorithm

Fully integrated ultra-low power RC oscillator

Wake-up driven by internal timer or external event

Digital real time RSSI

Flexible packet length with dynamic payload length

Programmable preamble and SYNC word quality filtering and detection

Embedded CSMA/CA engine based on listen-before-talk systems

IEEE 802.15.4g hardware packet support with whitening, FEC, CRC and dual SYNC word detection

Wireless M-BUS supported

KNX-RF supported

Enables operations in the SIGFOX™ and MONARCH networks

Suitable to build systems targeting:

Europe: ETSI EN 300 220, category 1.5 natively compliant, ETSI EN 303 131

US: FCC part 15 and part 90

Japan: ARIB STD T67, T108

China: SRRC

Operating temperature range: -40 °C to +105 °C
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Getting Started with the S2-LP GUI

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BlueNRG and Sub-1GHz Software Package

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Wireless Home CO detector

With today’s technologies, users can also receive an alert on their phone or a wearable device. ST’s S2-LP, sub-1GHz RF transceiver and the TSU111 operational amplifiers together with STM32 enable such enhanced alarms.

Watch the video (06:12)

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Components and Modules

Part number	Status	Description	Type	Supplier
MAIA	Active	Wireless M-Bus / NB-IoT gateway.	Components and Modules	WEPTECH elektronik	MAIA Description: Wireless M-Bus / NB-IoT gateway.
RC-S2LP-XXX	Active	RC-S2LP-434, RC-S2LP-868, RC-S2LP-915 Low Power sub 1GHz Multichannels Radio Transceiver modules	Components and Modules	Radio Controlli	RC-S2LP-XXX Description: RC-S2LP-434, RC-S2LP-868, RC-S2LP-915 Low Power sub 1GHz Multichannels Radio Transceiver modules
RC-S2LP-XXX-HA	Active	RC-S2LP-868-HA, RC-S2LP-915-HA, Ultra Low Power sub 1GHz Multichannels Radio Transceiver modules	Components and Modules	Radio Controlli	RC-S2LP-XXX-HA Description: RC-S2LP-868-HA, RC-S2LP-915-HA, Ultra Low Power sub 1GHz Multichannels Radio Transceiver modules
RC-SPIRIT2-XXX	Active	RC-SPIRIT2-433, RC-SPIRIT2-868, Ultra Low Power sub 1GHz Multichannels Radio Transceiver modules	Components and Modules	Radio Controlli	RC-SPIRIT2-XXX Description: RC-SPIRIT2-433, RC-SPIRIT2-868, Ultra Low Power sub 1GHz Multichannels Radio Transceiver modules
RF Modules	Active	RF modules for Sub GigaHz and Bluetooth.	Components and Modules	DiZiC	RF Modules Description: RF modules for Sub GigaHz and Bluetooth.
SIGFOX-MOD1-C / -E	Active	The SIGFOX-MOD1 are ultra-low-power modules designed especially for sensor node applications mounted with chip antenna.	Components and Modules	XoverIoT	SIGFOX-MOD1-C / -E Description: The SIGFOX-MOD1 are ultra-low-power modules designed especially for sensor node applications mounted with chip antenna.
SIGFOX-MOD2-C / -E	Active	The SIGFOX-MOD2 are ultra-low-power Uplink-Only modules designed especially for sensor node applications using Sigfox, subGHz and proprietary protocols.	Components and Modules	XoverIoT	SIGFOX-MOD2-C / -E Description: The SIGFOX-MOD2 are ultra-low-power Uplink-Only modules designed especially for sensor node applications using Sigfox, subGHz and proprietary protocols.
SWAN2	Active	Wireless M-Bus / NB-IoT gateway.	Components and Modules	WEPTECH elektronik	SWAN2 Description: Wireless M-Bus / NB-IoT gateway.
SensiSUB	Active	Connecting low-power SUB 1GHZ RF transceiver to the Cloud with fully customisable sensors, ARM® 32-bit Cortex®-M4 CPU and coin battery.	Components and Modules	SensiEDGE	SensiSUB Description: Connecting low-power SUB 1GHZ RF transceiver to the Cloud with fully customisable sensors, ARM® 32-bit Cortex®-M4 CPU and coin battery.

Embedded Software from Partners

Part number	Status	Description	Type	Supplier
EMBETECH embeNET	Active	embeNET is an IPv6-based wireless mesh network stack that provides large-scale communication capabilities in various embedded systems applications.		EMBETECH	EMBETECH embeNET Description: embeNET is an IPv6-based wireless mesh network stack that provides large-scale communication capabilities in various embedded systems applications.

Engineering Services

Part number	Status	Description	Type	Supplier
HW Design Service	Active	Complete OEM solution from end to end.	Engineering Services	DiZiC	HW Design Service Description: Complete OEM solution from end to end.
SensiEDGE customization services	Active	End-to-end development services: Hardware, Firmware, Software development, Enclosure, Cloud and mobile APPs. Speed up your IoT project with SensiEDGE!	Engineering Services	SensiEDGE	SensiEDGE customization services Description: End-to-end development services: Hardware, Firmware, Software development, Enclosure, Cloud and mobile APPs. Speed up your IoT project with SensiEDGE!
Short-Range-Devices Test Services	Active	Consulting, Test, Certification & Approval Services for Sub 1 GHz / SRD products	Engineering Services	7Layers	Short-Range-Devices Test Services Description: Consulting, Test, Certification & Approval Services for Sub 1 GHz / SRD products
Sigfox Modules HW-SW customization	Active	XoverIoT provides Sigfox module hardware services, embedded firmware including the Sigfox SW Stack and module customization.	Engineering Services	XoverIoT	Sigfox Modules HW-SW customization Description: XoverIoT provides Sigfox module hardware services, embedded firmware including the Sigfox SW Stack and module customization.

Evaluation Tool Software

Part number	Status	Description	Type	Supplier
STSW-S2LP-DK	Active	Evaluation SW package based on S2-LP	Evaluation Tool Software	ST	STSW-S2LP-DK Description: Evaluation SW package based on S2-LP
STSW-S2LP-SFX-DK	Active	Evaluation SW package based on S2-LP	Evaluation Tool Software	ST	STSW-S2LP-SFX-DK Description: Evaluation SW package based on S2-LP

Hardware Development Tools

Part number	Status	Description	Type	Supplier
SIGFOX-USB2-C	Active	USB Kickstart-Development Kit. The SIGFOX-USB2 is a baseboard with a SIGFOX-DEV1-C monted on it.	Development Tool Hardware from Partners	XoverIoT	SIGFOX-USB2-C Description: USB Kickstart-Development Kit. The SIGFOX-USB2 is a baseboard with a SIGFOX-DEV1-C monted on it.

MCU & MPU Embedded Software

Part number	Status	Description	Type	Supplier
STACKFORCE Wireless M-Bus Protocol Stack	Active	Wireless M-Bus Protocol Stack, compliant to EN 13757-3/-4, OMS v4 and several other standards/specifications based on EN 13757-3/-4.	STM32 3rd-party Embedded Software	STACKFORCE	STACKFORCE Wireless M-Bus Protocol Stack Description: Wireless M-Bus Protocol Stack, compliant to EN 13757-3/-4, OMS v4 and several other standards/specifications based on EN 13757-3/-4.
STACKFORCE mioty® Protocol Stack for end points	Active	mioty Protocol Stack for end nodes, implementing the new ETSI standard TS 103357.	STM32 3rd-party Embedded Software	STACKFORCE	STACKFORCE mioty® Protocol Stack for end points Description: mioty Protocol Stack for end nodes, implementing the new ETSI standard TS 103357.
Sigfox Connectivity	Active	Sigfox IoT connectivity feed your innovation strategy and make the digital transformation of your business a reality. Sigfox IoT connectivity brings value in various business activities. With the continued miniaturization of sensors and technologic advancements such as energy harvesting, we will witness a continuous ow of data, merging the physical world to the digital world.	STM32 3rd-party Embedded Software	Sigfox	Sigfox Connectivity Description: Sigfox IoT connectivity feed your innovation strategy and make the digital transformation of your business a reality. Sigfox IoT connectivity brings value in various business activities. With the continued miniaturization of sensors and technologic advancements such as energy harvesting, we will witness a continuous ow of data, merging the physical world to the digital world.
Sigfox Geolocation	Active	Sigfox Geolocation, the simplest and most efficient IoT location service. Sigfox Geolocation is a low-energy location service for all devices equipped with the simplest Sigfox module, without GPS. There is no need to retrofit to upgrade specific hardware, or to update software: Sigfox can now provide a location for all existing and future devices all over the world.	STM32 3rd-party Embedded Software	Sigfox	Sigfox Geolocation Description: Sigfox Geolocation, the simplest and most efficient IoT location service. Sigfox Geolocation is a low-energy location service for all devices equipped with the simplest Sigfox module, without GPS. There is no need to retrofit to upgrade specific hardware, or to update software: Sigfox can now provide a location for all existing and future devices all over the world.

Short Range

Part number	Status	Description	Type	Supplier
B-UWB-MEK1	Proposal	Evaluation kit for the B-UWB-MOD1 ultra-wideband module	Ultra Wideband Products	--	B-UWB-MEK1 Description: Evaluation kit for the B-UWB-MOD1 ultra-wideband module

Solution Evaluation Tools

Part number	Status	Description	Type	Supplier
STDES-MONARCH	Active	Sigfox Monarch reference design based on S2-LP and BlueNRG-2	Communication and Connectivity Solution Eval Boards	ST	STDES-MONARCH Description: Sigfox Monarch reference design based on S2-LP and BlueNRG-2
STEVAL-FKI001V1	Active	Dual radio BLE and Sub-1GHz development kit for Sigfox™ and LPWAN protocols with BlueNRG-1 and S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI001V1 Description: Dual radio BLE and Sub-1GHz development kit for Sigfox™ and LPWAN protocols with BlueNRG-1 and S2-LP
STEVAL-FKI433V1	NRND	Sub-1GHz transceiver development kit based on S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI433V1 Description: Sub-1GHz transceiver development kit based on S2-LP
STEVAL-FKI433V2	Active	Sub-1GHz (430-470 MHz) transceiver development kit based on S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI433V2 Description: Sub-1GHz (430-470 MHz) transceiver development kit based on S2-LP
STEVAL-FKI512V1	Active	Sub-1GHz (452-527 MHz) transceiver development kit based on S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI512V1 Description: Sub-1GHz (452-527 MHz) transceiver development kit based on S2-LP
STEVAL-FKI868V1	NRND	Sub-1GHz transceiver development kit based on S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI868V1 Description: Sub-1GHz transceiver development kit based on S2-LP
STEVAL-FKI868V2	Active	Sub-1GHz (860-940 MHz) transceiver development kit based on S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI868V2 Description: Sub-1GHz (860-940 MHz) transceiver development kit based on S2-LP
STEVAL-FKI915V1	Active	Sub-1GHz transceiver development kit based on S2-LP	Communication and Connectivity Solution Eval Boards	ST	STEVAL-FKI915V1 Description: Sub-1GHz transceiver development kit based on S2-LP

STM32 Open Development Environment

Part number	Status	Description	Type	Supplier
X-NUCLEO-S2868A1	NRND	Sub-1 GHz 868 MHz RF expansion board based on S2-LP radio for STM32 Nucleo	STM32 ODE Connect HW	ST	X-NUCLEO-S2868A1 Description: Sub-1 GHz 868 MHz RF expansion board based on S2-LP radio for STM32 Nucleo
X-NUCLEO-S2868A2	Active	Sub-1 GHz 868 MHz RF expansion board based on S2-LP radio for STM32 Nucleo	STM32 ODE Connect HW	ST	X-NUCLEO-S2868A2 Description: Sub-1 GHz 868 MHz RF expansion board based on S2-LP radio for STM32 Nucleo
X-NUCLEO-S2915A1	Active	Sub-1 GHz 915 MHz RF expansion board based on S2-LP radio for STM32 Nucleo	STM32 ODE Connect HW	ST	X-NUCLEO-S2915A1 Description: Sub-1 GHz 915 MHz RF expansion board based on S2-LP radio for STM32 Nucleo

Trainings

Part number	Status	Description	Type	Supplier
Training on antennas for Sigfox and subGHz	Active	The training gives a quick and substantial introduction into the features of frequently used antennas, their characteristics and their peculiarities.	Trainings	XoverIoT	Training on antennas for Sigfox and subGHz Description: The training gives a quick and substantial introduction into the features of frequently used antennas, their characteristics and their peculiarities.

Wireless Connectivity Software

Part number	Status	Description	Type	Supplier
STSW-BNRG-S2LP	Active	STSW-BNRG-S2LP evaluation software package based on BlueNRG-1 and S2-LP	Wireless Connectivity Software	ST	STSW-BNRG-S2LP Description: STSW-BNRG-S2LP evaluation software package based on BlueNRG-1 and S2-LP

All resources

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	Resource title		Latest update

Product Specifications (1)

	Resource title		Latest update
PDF	DS11896 Ultra-low power, high performance, sub-1GHz transceiver 7.0		22 Sep 2020	22 Sep 2020 DS11896 Ultra-low power, high performance, sub-1GHz transceiver 7.0

Application Notes (5 of 11)

	Resource title	Latest update
PDF	AN4190 Antenna selection guidelines 1.1	13 Sep 2018	13 Sep 2018 AN4190 Antenna selection guidelines 1.1
PDF	AN4947 PCB design guidelines for the S2-LP transceiver 2.0	13 Sep 2018	13 Sep 2018 AN4947 PCB design guidelines for the S2-LP transceiver 2.0
PDF	AN5528 Radio communication range estimation in ISM band 1.0	04 Nov 2020	04 Nov 2020 AN5528 Radio communication range estimation in ISM band 1.0
PDF	AN4962 S2-LP ETSI compliance test at 868 MHz SRD band 1.0	06 Feb 2020	06 Feb 2020 AN4962 S2-LP ETSI compliance test at 868 MHz SRD band 1.0
PDF	AN5210 The S2-LP transceiver with BALF-SPI2-01D3 under ARIB STD-T108 in the 920 MHz band 1.0	01 Mar 2019	01 Mar 2019 AN5210 The S2-LP transceiver with BALF-SPI2-01D3 under ARIB STD-T108 in the 920 MHz band 1.0
PDF	AN4953 Using the S2-LP transceiver under ARIB STD-T108 in the 920 MHz band 1.0	06 Feb 2020	06 Feb 2020 AN4953 Using the S2-LP transceiver under ARIB STD-T108 in the 920 MHz band 1.0
PDF	AN4997 Using the S2-LP transceiver under FCC Title 47 Part 15 in the 430 - 470 MHz band 1.0	13 Sep 2018	13 Sep 2018 AN4997 Using the S2-LP transceiver under FCC Title 47 Part 15 in the 430 - 470 MHz band 1.0
PDF	AN4949 Using the S2-LP transceiver under FCC title 47 part 15 in the 902 – 928 MHz band 1.0	13 Sep 2018	13 Sep 2018 AN4949 Using the S2-LP transceiver under FCC title 47 part 15 in the 902 – 928 MHz band 1.0
PDF	AN5009 Using the S2-LP transceiver under FCC title 47 part 90 in the 450 - 470 MHz band 1.0	13 Sep 2018	13 Sep 2018 AN5009 Using the S2-LP transceiver under FCC title 47 part 90 in the 450 - 470 MHz band 1.0
PDF	AN5008 Using the S2-LP transceiver under the ARIB STD-T67 standard 1.0	06 Feb 2020	06 Feb 2020 AN5008 Using the S2-LP transceiver under the ARIB STD-T67 standard 1.0
PDF	AN5029 Using the S2-LP transceiver with FEM at 500 mW under FCC title 47 part 15 in the 902 – 928 MHz band 1.0	13 Sep 2018	13 Sep 2018 AN5029 Using the S2-LP transceiver with FEM at 500 mW under FCC title 47 part 15 in the 902 – 928 MHz band 1.0

User Manuals (1)

	Resource title		Latest update
PDF	UM2211 BLE-Sub1 GHz development kit 3.2		09 Apr 2021	09 Apr 2021 UM2211 BLE-Sub1 GHz development kit 3.2

Errata Sheets (1)

	Resource title		Latest update
PDF	ES0386 Silicon limitations 1.0		09 Nov 2016	09 Nov 2016 ES0386 Silicon limitations 1.0

Design Notes & Tips (2)

	Resource title		Latest update
PDF	DT0128 How to enable Unicast/Broadcast communication on S2-LP 1.2		20 Feb 2019	20 Feb 2019 DT0128 How to enable Unicast/Broadcast communication on S2-LP 1.2
PDF	DT0094 KeeLoq RX application over S2-LP 1.0		12 Dec 2017	12 Dec 2017 DT0094 KeeLoq RX application over S2-LP 1.0

Flyers (2)

	Resource title		Latest update
PDF	Complete ecosystem for Sigfox™ IoT devices 1.0		04 Dec 2020	04 Dec 2020 Complete ecosystem for Sigfox™ IoT devices 1.0
PDF	S2-LP:Ultra-low-power, high-performance, sub-1GHz RF transceiver 4.0		23 Mar 2020	23 Mar 2020 S2-LP:Ultra-low-power, high-performance, sub-1GHz RF transceiver 4.0

Brochures (1)

	Resource title		Latest update
PDF	Reference Guide for Sub-1GHz 1.0		01 Apr 2021	01 Apr 2021 Reference Guide for Sub-1GHz 1.0