BlueNRG-2 Bluetooth Low Energy wireless system-on-chip Features Bluetooth Low Energy system-on-chip Bluetooth v5.2 certified, supporting: Master, slave and multiple simultaneous roles LE Privacy 1.2 and LE secure connection LE data packet length extension Operating supply voltage: from 1.7 to 3.6 V Integrated linear regulator and DC-DC step-down converter Operating temperature range: -40 C to 105 C High performance, ultra-low power Cortex-M0 32-bit based architecture core Programmable 256 kB Flash 24 kB RAM with retention (two 12 kB banks) 1 x UART interface 1 x SPI interface 2 x IC interface 14, 15 or 26 GPIOs 2 x multifunction timer 10-bit ADC Watchdog and RTC DMA controller PDM stream processor 16 or 32 MHz crystal oscillator Product status link 32 kHz crystal oscillator BlueNRG-2 32 kHz ring oscillator Battery voltage and temperature sensors Up to +8 dBm available output power (at antenna connector) Excellent RF link budget (up to 96 dB) Accurate RSSI to allow power control 8.3 mA TX current ( -2 dBm, 3.0 V) Down to 1 A current consumption with active BLE stack (sleep mode) ST companion integrated balun/filter chips are available Average advertisement current consumption 15.34 A (advertisement interval 1000 ms) 1 year, 8 months, 19 days with 230 mAh battery (CR2032) Average connection current consumption 7.059 A (connection interval 1000 ms) 3 years, 10 months, 12 days with 230 mAh battery (CR2032) Suitable for building applications compliant with the following radio frequency regulations: ETSI EN 300 328, EN 300 440, FCC CFR47 part 15, ARIB STD- T66 Pre-programmed bootloader via UART QFN32, QFN48 and WCSP34 package options Applications Watches Fitness, wellness and sports DS12166 - Rev 8 - September 2021 www.st.com For further information contact your local STMicroelectronics sales office.BlueNRG-2 Consumer medical Security/proximity Remote control Home and industrial automation Assisted living Mobile phone peripherals Lighting PC peripherals DS12166 - Rev 8 page 2/171