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S140SoftDevice

Bluetooth 5 Central and Peripheral protocol stack

SoftDevice S140 is a feature-complete Bluetooth 5 qualified protocol stack for the nRF52811 and nRF52840 SoCs. It supports up to 20 concurrent links in all roles. It supports all Bluetooth 5 features: 2 Mbps, Long Range, Advertising Extensions and channel selection algorithm #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, L2CAP, and Link Layer. Both GATT Server and Client are supported. The broad feature set also includes Privacy 1.2, LE Data Packet Length Extension, configurable ATT MTU, L2CAP connection-oriented channels and LE Secure Connections.

Key Features
Bluetooth 5
2 Mbps
Bluetooth 5
Long Range
Bluetooth 5
Advertising Extensions
Bluetooth 5
CSA #2
20 concurrent
links
All roles
(Ce+Pe+Br+Ob)
LE
Secure Connections
DLE
Timeslot
API

Other nRF52 SoftDevices

Bluetooth LE & ANT

nRF52 Series SoCs

Compatible with SoftDevice S140

nRF52811 SoC

Baseline nRF52 Series SoC with comprehensive protocol support, including Bluetooth 5.1 Direction Finding.

64 MHz Cortex-M4
192 KB Flash, 24 KB RAM
2.4 GHz Transceiver
2 Mbps, 1 Mbps, Long Range
Bluetooth 5.1 Direction Finding
ANT, 802.15.4, Thread, Zigbee
+4 dBm TX Power
128-bit AES CCM

UART, SPI, TWI, PDM  
PWM

12-bit ADC



nRF52840 SoC

High-end nRF52 Series multiprotocol SoC for high-performance, feature-rich applications with best-in-class security.

64 MHz Cortex-M4 with FPU
1 MB Flash, 256 KB RAM
2.4 GHz Transceiver
2 Mbps, 1 Mbps, Long Range
Bluetooth 5, Bluetooth mesh
ANT, 802.15.4, Thread, Zigbee
+8 dBm TX Power
128-bit AES CCM, ARM CryptoCell
UART, SPI, TWI, PDM, I2S, QSPI
PWM
12-bit ADC
NFC-A
USB 2.0

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