Features

■ Compatible with Bluetooth v5.1, ETSI EN 300

328 and EN 300 440 Class 2 (Europe), FCC

CFR47 Part 15 (US) and ARIB STD-T66

(Japan)

■ Supports up to three BLE connections

■ Typical cold boot to radio active 35 ms

■ Processing power

□ 16 MHz 32-bit Arm® Cortex-M0+ with

SWD interface

□ 18300 EEMBC IoTMark-BLE®

score

□ Dedicated Link Layer and AES-128

Encryption Processor

□ Software-based True Random Number

Generator (TRNG)

■ Memories

□ 32 kB One-Time-Programmable (OTP)

□ 48 kB Retainable System RAM

□ 144 kB ROM

■ Power management

□ Integrated Buck/Boost DCDC converter

□ Buck: 1.1 V ≤ VBAT_HIGH ≤ 3.3 V (min 1.8V

OTP read needed)

□ Boost: 1.1 V ≤ VBAT_LOW ≤ 1.65 V

□ Clock-less hibernation mode: Buck 270

nA, Boost 240 nA

□ Built-in temperature sensor for die

temperature monitoring

■ Clocks

□ 32 MHz crystal and 32 MHz RC osc.

□ 32 kHz crystal and 32/512 kHz RC osc.

□ 15 kHz RCX as crystal replacement

■ Programmable Reset Circuitry

■ 2× General purpose Timers with capture and

PWM capabilities

■ Digital interfaces

□ GPIOs: 6 (WLCSP17), 12 (FCGQFN24)

□ 2× UARTs (one with flow control)

□ SPI Master/Slave up to 32 MHz (Master)

□ I2C bus at 100 kHz and 400 kHz

□ 3-axis capable Quadrature Decoder

□ Keyboard controller

■ Analog interfaces

□ 4-channel 10-bit ADC

■ Radio transceiver

□ Fully integrated 2.4 GHz CMOS

transceiver

□ Single wire antenna

□ TX: 3.5 mA, RX: 2.2 mA (system currents

with DC-DC, VBAT_HIGH =3 V and 0 dBm)

□ Programmable transmit output power from

-19.5 dBm to +2.5 dBm

□ -94 dBm receiver sensitivity

■ Packages:

□ WLCSP 17 balls, 1.7 × 2.05, 0.5 mm pitch

□ FCGQFN 24 pins, 2.2 × 3, 0.4 mm pitch

Applications

■ Medical applications

■ Disposables

■ Beacons

■ Proximity tags and trackers

■ Wireless sensor nodes

□ Fitness trackers

□ Consumer health

■ Smartwatches

■ Human interface devices (HID)

□ Stylus pens

□ Keyboards

□ Mouse devices

□ Trackpads

■ Toys

■ Industrial appliances