S120SoftDevice

Bluetooth Low Energy Central or Peripheral protocol stack

SoftDevice S120 is a Bluetooth 4.1 qualified protocol stack for the nRF51 Series. It is configurable at runtime as either Central or Peripheral and can support up to 8 concurrent links in Central/Observer roles or concurrent Peripheral/Broadcaster roles. It is a complete stack with GAP, GATT, ATT, SM, L2CAP, and Link Layer. Both GATT Server and Client are supported.

Key Features
Bluetooth 4.1
All roles
(Ce+Pe+Br+Ob)
8
concurrent links
GATT
client/server
Timeslot
API

Other nRF51 SoftDevices

Bluetooth LE & ANT

Relevant SDKs

Click to read more

nRF5 SDK

The Bluetooth LE and ANT software development kit

The nRF5 SDK is a high quality, thoroughly tested software development kit to accelerate your software development efforts for the nRF52 and nRF51 Series SoCs. It contains hundreds of useful firmware modules and examples to assist in building your application.
 

nRF51 Series SoCs

Compatible with SoftDevice S120

nRF51822 SoC

General purpose Bluetooth Low Energy SoC ideal for single chip solutions or as a connectivity device.

16 MHz Cortex-M0
256/128 KB Flash, 32/16 KB RAM
2.4 GHz Transceiver
2 Mbps, 1 Mbps, 250 kbps
Bluetooth Low Energy
+4 dBm TX Power
128-bit AES CCM

UART, SPI, TWI

10-bit ADC

nRF51422 SoC

General purpose multiprotocol ANT/Bluetooth Low Energy SoC. It is a nRF51822 with ANT support.

16 MHz Cortex-M0
256/128 KB Flash, 32/16 KB RAM
2.4 GHz Transceiver
2 Mbps, 1 Mbps, 250 kbps
Bluetooth Low Energy, ANT
+4 dBm TX Power
128-bit AES CCM

UART, SPI, TWI

10-bit ADC

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