Features
• Includes ST state-of-the-art patented technology
• Bluetooth® LE
– LE 2M
– LE Coded
– Extended Advertising
– LE Channel Classification
– Direction Finding
– LE Data Packet Length Extension
– LE Secure Connections
– Link Layer Privacy
– Periodic Advertising
– Periodic Advertising with Responses
– Advertising Coding selection
– Encrypted Advertising Data
– LE L2CAP Connection-Oriented Channel
– LE Power Control
– Enhanced Attribute Protocol
– Connection Subrating
– Isochronous Channels
– Qualified against Bluetooth® Core 5.4
• Radio
– RX sensitivity level: -97 dBm @ 1 Mbit/s, -104 dBm @ 125 Kbit/s (long
range)
– Programmable output power up to +8 dBm (at antenna connector)
– 128 physical connections
– Data rate supported: 2 Mbit/s, 1 Mbit/s, 500 Kbit/s and 125 Kbit/s
– Integrated balun
– Support for external PA and LNA
– BlueNRG core coprocessor (DMA based) for Bluetooth® LE time critical
operations
– 2.4 GHz proprietary radio driver
– Suitable for systems requiring compliance with the following radio
frequency regulations: ETSI EN 300 328, EN 300 440, FCC CFR47 part
15, ARIB STD-T66
– Available integrated passive device (IPD) companion chip for optimized
matching and filtering
• Ultra-low power radio performance
– 12 nA in Shutdown mode (1.8 V)
– 0.9 μA in Deepstop mode (with external LSE, radio wakeup source and RAM retained, 1.8 V)
– 1.2 μA in Deepstop mode (with internal LSI, radio wakeup source and RAM retained, 1.8 V)
– 4.9 mA peak current in TX (@0 dBm, 3.3 V)
– 3.6 mA peak current in RX (@ sensitivity level, 3.3 V)
• High performance and ultra-low power 32-bit Arm® Cortex®-M0+ , running up to 64 MHz
• Dynamic current consumption: 14.47 μA/MHz
• Operating supply voltage: from 1.7 to 3.6 V
• -40 ºC to 105 ºC temperature range
• Supply and reset management
– High efficiency embedded SMPS step-down converter with intelligent bypass mode
– Ultra-low power power-on-reset (POR) and power-down-reset (PDR)
– Programmable voltage detector (PVD)
• Clock sources
– 64 MHz PLL
– Fail safe 32 MHz crystal oscillator with integrated trimming capacitors
– 32 kHz crystal oscillator
– Internal low-power 32 kHz RO
• On-chip non-volatile flash memory of 512 Kbytes with page protection against R/W
• On-chip RAM of 64 Kbytes and 4 Kbytes PKA RAM
• One-time-programmable (OTP) memory area of 1 Kbytes
• Embedded UART bootloader
• Ultra-low power modes with or without timer and RAM retention
• Quadrature decoder
• Enhanced security mechanisms such as:
– Flash read/write protection
– SWD disabling
– Secure bootloader
• Security features
– True random number generator (TRNG) compliant with NIST special publication 800-90B
– Hardware encryption AES maximum 128-bit security co-processor
– Hardware public key accelerator (PKA)
– Cryptographic algorithms: RSA, Diffie-Helman, ECC over GF(p)
– CRC calculation unit
– 64-bit unique ID
• System peripherals
– 1x DMA controller with 8 channels supporting ADC, SPI, I2C, USART, LPUART, Timers
– 1x SPI with I2S interface multiplexed
– 1x I2C (SMBus/PMBus)
– 1x LPUART (low power)
– 1x USART (ISO 7816 smartcard mode, IrDA, SPI master and modbus)
– 1x independent WDG
– 1x real time clock (RTC)
– 1x independent SysTick
– 1x 16-bit, four channels general purpose timer
– 2x 16-bit, two channels general purpose timer
– Infrared interface
• Up to 20 fast I/Os
– all of them with wakeup capability
– all of them retain state in low-power mode
– all of them 5 V tolerant
• Analog peripherals
– 12-bit ADC with 8 input channels, up to 16 bits with a down sampler
– Battery monitoring
– Analog watchdog
• Development support
– Serial wire debug (SWD)
– 4 breakpoints and two watchpoints
• All packages are ECOPACK2 compliant

Applications
• Industrial
• Home and industrial automation
• Asset tracking, ID location, real-time locating system
• Smart lighting
• Fitness,wellness and sports
• Healthcare, consumer medical
• Security/proximity
• Remote control
• Assisted living
• Mobile phone peripherals
• PC peripherals