Features
■ Bluetooth specification v4.1 compliant master and slave single-mode Bluetooth low energy network processor
■ Embedded Bluetooth low energy protocol stack: GAP, GATT, SM, L2CAP, LL, RF- PHY
■ Bluetooth low energy profiles provided separately
■ Operating supply voltage: from 1.7 to 3.6 V
■ 8.2 mA maximum TX current (@0 dBm, 3.0 V)
■ Down to 1.7 µA current consumption with active BLE stack
■ Integrated linear regulator and DC-DC step- down converter
■ Up to +8 dBm available output power (at antenna connector)
■ Excellent RF link budget (up to 96 dB)
■ Accurate RSSI to allow power control
■ Proprietary application controller interface (ACI), SPI based, allows interfacing with an external host application microcontroller
■ Full link controller and host security
■ High performance, ultra-low power Cortex- M0 32-bit based architecture core
■ Upgradable BLE stack (stored in embedded Flash memory, via SPI)
■ AES security co-processor
■ Low power modes
■ 16 or 32 MHz crystal oscillator
■ 12 MHz ring oscillator
■ 32 kHz crystal oscillator
■ 32 kHz ring oscillator
■ Battery voltage monitor
■ Compliant with the following radio frequency regulations: ETSI EN 300 328, EN 300 440, FCC CFR47 Part 15, ARIB STD-T66
■ Available in QFN32 (5 x 5 mm) and WLCSP34 (2.66 x 2.56 mm) packages
■ Operating temperature range: -40 °C to 85 °C

Applications
■ Watches
■ Fitness, wellness and sports
■ Consumer medical
■ Security/proximity
■ Remote control
■ Home and industrial automation
■ Assisted living
■ Mobile phone peripherals
■ PC peripherals