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Programmable Bluetooth Low Energy 5.3 Wireless SoC
Ultra-low-power dual core Arm Cortex-M4 MCU 64 MHz, Cortex-M0+ 32 MHz with 512 Kbytes of Flash memor
128 Kbit Serial I2C Bus EEPROM
128 Kbit SPI bus EEPROM with high-speed clock
Multi-mode High fidelity Digital bottom port MEMS microphone