Atmel : Bluetooth SAM B11 SoC offers very low power consumption in active and power-down modes


SAM B11 from Atmel: complete Bluetooth Smart implementation

The SAM B11 from Atmel is an ultra lowpower Bluetooth® SMART System-on-Chip (SoC) which provides a complete low-power Bluetooth implementation for use in IoT devices.

It includes an ARM® Cortex®-M0 applications processor with 256kbytes of embedded Flash memory for system software, together with a Bluetooth v4.1 transceiver, modem, media access controller, power amplifier, Transmit/Receive switch, and a powermanagement unit with an integrated DCDC buck converter.

The SoC offers very low power consumption in both active and power-down modes. It draws a peak current of 2.9mA to provide a Transmit power of 0dBm at 3.6V. In Receive mode, peak current is
rated at 4.0mA at 3.6V, at which the SAM B11 achieves sensitivity of -93dBm.

In Sleep mode, the device draws just 1.1μA. In this condition, it retains 8kbytes of data in RAM and maintains the operation of its real-time clock.

The SAM B11’s qualified Bluetooth Smart protocol stack is stored in dedicated ROM. The firmware provided by Atmel includes L2CAP service-layer protocols, Security Manager, an Attribute (ATT) protocol, Generic Attribute Profile (GATT), and the Generic Access Profile (GAP). In addition, application profiles such as Proximity, Thermometer, Heart Rate, Blood Pressure, and many others are included in the protocol stack.

The SAM B11 is available in a 48-pin QFN package measuring just 6mm x 6mm.


  • AES-128 and SHA-256 hardware security accelerators
  • Two I2C interfaces
  • Two serial peripheral interfaces
  • Two UART interfaces
  • 3.5dBm Transmit power
  • -95dBm receiver sensitivity
  • Operating voltage range: 2.3V to 3.6V
  • Operating temperature range:-40°C to 85°C


  • IoT nodes
  • Wireless sensors


Orderable Part Number: ATSAMB11-XPRO