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S112 SoftDevice

Memory-optimized Peripheral-only Bluetooth Low Energy protocol stack

SoftDevice S112 is a memory-optimized Bluetooth® Low Energy protocol stack for the nRF52805, nRF52810, nRF52811, nRF52820 and nRF52832 System-on-Chips (SoCs). Up to 4 connections as a Peripheral can be run concurrently with a Broadcaster. It is Bluetooth 5.1 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 Mbps
Bluetooth 5
CSA #2
Peripheral + Broadcaster
Secure Connections
Key features

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


Select version to download


7.3.0SoftDevice S112

  • A new option named BLE_GAP_SLAVE_LATENCY_WAIT_FOR_ACK and few bug fixes.
  • See release notes inside download for more information

7.2.0SoftDevice S112

  • Updated release notes, see release notes inside download for more information
  • 128-bit UUIDs can be discovered more efficiently by enabling the BLE_GATTC_OPT_UUID_DISC option
  • 8 dBm TX power can be enabled on the nRF52820 SoC
  • Added APIs to read USB power register and to enable USB power events on the nRF52820 SoC

7.0.1SoftDevice S112

  • First Bluetooth 5.1 qualified release
  • Added compatibility for the nRF52805 and nRF52820 SoCs in addition to the nRF52810, nRF52811 and nRF52832 SoCs
  • Added API to configure the inclusion of the CAR and PPCP characteristics

6.1.1SoftDevice S112

  • Minor bugfix release

6.1.0SoftDevice S112

  • Extended Received Signal Strength Indication (RSSI) APIs
  • Updated advertising API

6.0.0SoftDevice S112

  • Extended Received Signal Strength Indication (RSSI) APIs
  • Updated advertising API

5.1.0SoftDevice S112

  • Production release of the S112 v5.1.0 SoftDevice
  • See the release notes for more information

5.1.0-2.alphaSoftDevice S112

  • First alpha release of the S112
  • This is the first public release of S112, a subset of the S132 SoftDevice.
  • See the release notes for more information.

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