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S122 SoftDevice

Memory-optimized Central-only Bluetooth Low Energy protocol stack

The SoftDevices and associated nRF5 SDK are in maintenance mode, see nRF Connect SDK and nRF5 SDK statement for more info. For new projects, we recommend the nRF Connect SDK using either Zephyr RTOS or Bare Metal (for nRF54L Series).

SoftDevice S122 is a memory-optimized Bluetooth® Low Energy protocol stack for the nRF52811, nRF52820 and nRF52833 System-on-Chips (SoCs). Up to 8 connections as a Central can be run concurrently with an Observer. It is Bluetooth 5.2 qualified and supports the following Bluetooth features: high-throughput 2 Mbps and channel selection algorithm 2 (CSA #2). The number of connections and bandwidth per connection are configurable, offering memory and performance optimization.

It is a complete stack with GAP, GATT, ATT, SM and Link Layer. Both GATT Server and Client are supported. The broad feature set also includes Privacy 1.2, configurable ATT MTU and LE Secure Connections.

Key features

Bluetooth 5.2 qualified

High-throughput 2 Mbps

CSA #2

LE Secure Connections

Privacy 1.2

Configurable ATT Table

Configurable ATT MTU

Custom UUID

Concurrent multiprotocol support

Documentation

All nRF52 Series protocol stacks

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S112 SoftDevice S112

SoftDevice S112 is a memory-optimized Peripheral-only Bluetooth LE protocol stack for the nRF52805, nRF52810, nRF52811, nRF52820 and nRF52832 SoCs.

Bluetooth 5.1 qualified
High-throughput 2 Mbps
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
Concurrent multiprotocol support
Read more

S113 SoftDevice S113

SoftDevice S113 is a memory-optimized Peripheral-only Bluetooth LE protocol stack for the nRF52805, nRF52810, nRF52811, nRF52820, nRF52832, nRF52833 and nRF52840 SoCs.

Bluetooth 5.1 qualified
High-throughput 2 Mbps
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
LE Data Packet Length Extension
L2CAP connection-oriented channels
Concurrent multiprotocol support
Read more

S122 SoftDevice S122

SoftDevice S122 is a memory-optimized Central-only Bluetooth LE protocol stack for the nRF52811, nRF52820 and nRF52833 SoCs.

Bluetooth 5.2 qualified
High-throughput 2 Mbps
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
Concurrent multiprotocol support
Read more

S132 SoftDevice S132

SoftDevice S132 is a high-performance Central and Peripheral Bluetooth LE protocol stack for the nRF52810 and nRF52832 SoCs.

Bluetooth 5.1 qualified
High-throughput 2 Mbps
Advertising Extensions
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
LE Data Packet Length Extension
L2CAP connection-oriented channels
Concurrent multiprotocol support
Read more

S140 SoftDevice SoftDevice S140

SoftDevice S140 is a feature-rich Central and Peripheral Bluetooth LE protocol stack for the nRF52811, nRF52820, nRF52833 and nRF52840 SoCs.

Bluetooth 5.1 qualified
High-throughput 2 Mbps
Long Range
Advertising Extensions
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
LE Data Packet Length Extension
L2CAP connection-oriented channels
Concurrent multiprotocol support
Read more

S212 SoftDevice S212

SoftDevice S212 is an ANT protocol stack for the nRF52810 and nRF52832 SoCs. It supports all ANT features and offers a variety of network topologies, including peer-to-peer, star and tree.

15 individual configurable ANT channels
Broadcast, acknowledged, burst transfer
Device search, pairing and proximity
Advanced burst transfer mode
Read more

S312 SoftDevice S312

SoftDevice S312 is a combined Bluetooth LE and ANT protocol stack supporting concurrent operation on the nRF52810 SoC.
It is distributed and Bluetooth qualified by Garmin Canada, Inc.

15 individual configurable ANT channels
Broadcast, acknowledged, burst transfer
Device search, pairing and proximity
Advanced burst transfer mode

Bluetooth 5 qualified
High-throughput 2 Mbps
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
Concurrent multiprotocol support

Read more

S332 SoftDevice S332

SoftDevice S332 is a combined Bluetooth LE and ANT protocol stack supporting concurrent operation on the nRF52832 SoC.
It is distributed and Bluetooth qualified by Garmin Canada, Inc.


15 individual configurable ANT channels
Broadcast, acknowledged, burst transfer
Device search, pairing and proximity 
Advanced burst transfer mode

Bluetooth 5 qualified
High-throughput 2 Mbps
Advertising Extensions
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
LE Data Packet Length Extension
L2CAP connection-oriented channels
Concurrent multiprotocol support
Read more

S340 SoftDevice S340

SoftDevice S340 is a combined Bluetooth LE and ANT protocol stack supporting concurrent operation on the nRF52840 SoC.
It is distributed and Bluetooth qualified by Garmin Canada, Inc.

15 individual configurable ANT channels
Broadcast, acknowledged, burst transfer
Device search, pairing and proximity
Advanced burst transfer mode

Bluetooth 5 qualified
High-throughput 2 Mbps
Long Range
Advertising Extensions
CSA #2
LE Secure Connections
Privacy 1.2
Configurable ATT Table
Configurable ATT MTU
Custom UUID
LE Data Packet Length Extension
L2CAP connection-oriented channels
Concurrent multiprotocol support

Read more
See all

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