Introduction
• Audio peripherals: I
2
C, digital microphone interface (PDM)
• Up to four Pulse Width Modulation (PWM) units with EasyDMA
• 12-bit, 200 ksps ADC with EasyDMA, eight configurable channels with programmable gain
• Full-speed (12 Mbps) USB device
• Network core
• 64 MHz Arm Cortex-M33
• 256 kB flash and 64 kB low leakage RAM
• Bluetooth 5.2, IEEE 802.15.4-2006, 2.4 GHz enabled transceiver
• SPI master/slave with EasyDMA
• I
2
C compatible two-wire master/slave with EasyDMA
• UART (CTS/RTS) with EasyDMA
nPM1100 PMIC
• 400 mA linear Li-ion/Li-Po battery charger with thermal protection
• Automatic trickle, constant current, and constant voltage charging
• Battery thermal protection
• Discharge current limitation
• 1.8 V–3.0 V, 150 mA step-down buck regulator
• Automatic transition between hysteretic and PWM modes
• Forced PWM mode for clean power operation
• Input regulator with USB compatible current limit of 100 mA and 500 mA
• 4.1 V–6.7 V input voltage range for normal operation
• LED drivers for charger state indication
• 2.3 V–4.35 V battery operating input range
WARNING:
Due to the following safety concerns the battery in this product shall only be removed and replaced
by qualified professionals:
• Replacing the battery with an incorrect battery type can cause a fire or explosion.
• Disposing the battery into a fire or hot oven, crushing it mechanically, or cutting it, can cause an
explosion.
• Leaving the battery in an environment with an extremely high temperature can cause an
explosion or the leakage of flammable liquid or gas.
• Subjecting the battery to extremely low air pressure can cause an explosion or the leakage of
flammable liquid or gas.
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