KEY FEATURES
• 64 MHz Arm® Cortex-M4
• 192 KB Flash + 24 KB RAM
• Bluetooth Low Energy
o Bluetooth 5.2
o High-throughput 2 Mbps
o Channel selection algorithm #2
• 2.4 GHz proprietary protocol support
• Ultra-low-power 2.4 GHz multiprotocol radio
o +4 dBm TX power
o -97 dBm RX sensitivity
o 7 mA in TX (4 dBm)
o 4.6 mA in TX (0 dBm)
o 4.6 mA in RX (1 Mbps)
o Integrated balun with single-ended output
• SPI, TWI UART
• 2-channel 12-bit ADC
• Integrated DC/DC regulator
• 0.3 μA in System OFF
• 1.1 μA in System ON with 24 KB RAM retained and RTC running
• Optimized for small two-layer PCB designs
o 2.48x2.46 mm WLCSP package
o Significantly lower cost than four-layer PCB designs
o Only 10 external passive components (inc. two crystal load capacitors)
o 9.5x8.8 mm reference layout is available, giving access to all GPIOs
APPLICATIONS
• Beacons
• Disposable medical devices
• Network processor
• Sensors
• Simple CE remotes
• Styluses and presenters