仕様
Bluetooth version：v5.4
Built-in Bluetooth IC：Nordic nRF52805
CPU：Arm Cortex-M4, 64MHz
Memory：192KB Flash / 24KB RAM
TX power：+4dBm
RX sensitivity：-94dBm (1Mbps)
TX current(DC-DC)：7.0mA (1Mbps, +4dBm)
RX current(DC-DC)：4.6mA (1Mbps)
Multi-protocol：-
GPIO：8 GPIO
Interfaces / Peripherals：SPI, I2C,UART,QDEC,12-bit ADC
High frequency clock：32 MHz水晶振動子内臓
Low frequency clock：32.768 kHz水晶振動子内臓
Operating temperature range：-40°C to +85°C
Operating voltage range：1.7V to 3.6V
Dimension：3.5 x 10.0 x 1.0 mm
Package：24-Pin LGA
Certification/Qualification：Japan (MIC), U.S.A. (FCC), Canada (ISED),(ETSI EN300 328 V2.2.2), Taiwan (NCC), Bluetooth
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