Features

• Includes ST state-of-the-art patented

technology

• Ultra-low power radio

– 2.4 GHz radio

– RF transceiver supporting Bluetooth® Low

Energy specification 5.4

– RX sensitivity: -96 dBm (Bluetooth® Low

Energy at 1 Mbps)

– Programmable output power, +4 dBm with

1 dB steps

– Integrated balun to reduce BOM

– Single crystal operation

– Suitable for systems requiring compliance

with radio frequency regulations ETSI EN

300 328, EN 300 440, FCC CFR47 Part 15

and ARIB STD-T66

• Operating conditions:

– 1.71 to 3.6 V power supply

– -40 to 85 °C temperature range

• Ultra-low power platform with

FlexPowerControl

– Autonomous peripherals with DMA,

functional down to Stop 1 mode

– 160 nA Standby mode (8 wake-up pins)

– 2.25 µA Standby mode with 16-Kbyte

SRAM

– 20.2 µA Stop mode with 16-Kbyte SRAM

– 41.8 µA/MHz Run mode at 3.3 V

– Radio: Rx 7.91 mA / Tx at 0 dBm 10.51 mA

– Embedded regulator LDO

• Core: Arm® 32-bit Cortex®-M33 CPU with

MPU, DSP, and FPU

• ART Accelerator: 8-Kbyte instruction cache

allowing 0-wait-state execution from flash

memory (frequency up to 100 MHz,

150 DMIPS)

• Benchmarks

– 1.5 DMIPS/MHz (Drystone 2.1)

– 410 CoreMark® (4.10 CoreMark/MHz)

• Real time clock (RTC) with hardware calendar,

alarms, and calibration

• Clock sources

– 32 MHz crystal oscillator

– 32 kHz crystal oscillator (LSE)

– Internal low-power 32 kHz (±5%) RC

– Internal 16 MHz factory trimmed RC (±1%)

– PLL for system clock and ADC

• Memories

– 1 Mbyte flash memory with ECC, including

256 Kbytes with 100k cycles

– 64-Kbyte SRAM, including 48 KB with

parity check

– 512-byte (32 rows) OTP

• Rich analog peripherals (independent supply)

– 12-bit ADC 2.5 Msps, with hardware

oversampling

• Communication peripherals

– Two UARTs (ISO 7816, IrDA, modem)

– SPI

– I2C Fm+ (1 Mbit/s), SMBus/PMBus®