Microchip ATSAMB11-ZR210CA Bluetooth Chip V4.1

The ATSAMB11-ZR is an ultra-low power, fully certified Bluetooth® Low Energy module with Integrated ARM® Cortex®-M0 MCU and application Flash memory. BluSDK Smart supports application profiles such as Proximity, Thermometer, Heart Rate, Blood Pressure, and many others. The qualified Bluetooth Low Energy protocol stack is stored in dedicated ROM, and the firmware includes L2CAP service layer protocols, Security Manager, Attribute protocol (ATT), Generic Attribute Profile (GATT) and the Generic Access Profile (GAP).

Microchip's lowest Bluetooth Low Energy module power consumption
Integrated MCU with 128KB RAM and 256KB Flash
Smart Connect Mobile App with source code available
Wide operating voltage range: 2.3 – 3.6V
BLE4.1 compliant module