S113 SoftDevice

Memory-optimized Peripheral-only Bluetooth Low Energy protocol stack

SoftDevice S113 is a memory-optimized Bluetooth® Low Energy protocol stack for the nRF52805, nRF52810, nRF52811, nRF52820, nRF52832, nRF52833 and nRF52840 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, LE Data Packet Length Extension, L2CAP connection-oriented channels, 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

LE Data Packet Length Extension

L2CAP connection-oriented channels

Concurrent multiprotocol support


Select version to download


7.3.0SoftDevice S113

  • 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 S113

  • Updated release notes, see release notes inside download for more information
  • Added compatibility for the nRF52820 SoC in addition to the nRF52805, nRF52810, nRF52811, nRF52832, nRF52833 and nRF52840 SoCs
  • 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, nRF52833 and nRF52840 SoCs

7.0.1SoftDevice S113

  • First Bluetooth 5.1 qualified release
  • First release of SoftDevice S113
  • S113 has all SoftDevice S112 features in addition to LE Data Packet Length Extensions and Connection-Oriented Channels in LE Credit Based Flow Control Mode
  • Compatible with the nRF52805, nRF52810, nRF52811, nRF52832, nRF52833 and nRF52840 SoCs
  • Added API to configure the inclusion of the CAR  and PPCP characteristics
  • Added API to trigger a task when the SoftDevice is about to start a connection event

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