Bluetooth
•CompliantwithBluetoothv4.2BR/EDRandBLEspecification
•Class‐1,class‐2andclass‐3transmitterwithoutexternalpoweramplifier
•Enhancedpowercontrol
•+12dBmtransmittingpower
•NZIFreceiverwith‐97dBmsensitivity
•AdaptiveFrequencyHopping(AFH)
•StandardHCIbasedonSDIO/SPI/UART
•HighspeedUARTHCI,upto4Mbps
•BT4.2controllerandhoststack
•ServiceDiscoverProtocol(SDP)
•GeneralAccessProfile(GAP)
•SecurityManageProtocol(SMP)
•BluetoothLowEnergy(BLE)
•ATT/GATT
•HID
•AllGATT‐basedprofilesupported
•SPP‐LikeGATT‐basedprofile
•BLEBeacon
•A2DP/AVRCP/SPP,HSP/HFP,RFCOMM
•CVSDandSBCforaudiocodec
•BluetoothPiconetandScatternet
CPUandMemory
•Xtensa®Single‐/Dual‐core32‐bitLX6microprocessor(s),upto600DMIPS
•448KBROM
•520KBSRAM
•16KBSRAMinRTC
•QSPIflash/SRAM,upto4x16MB•Powersupply:2.3Vto3.6V
ClocksandTimers
•Internal8MHzoscillatorwithcalibration
•InternalRCoscillatorwithcalibration
•External2MHzto60MHzcrystaloscillator(40MHzonlyforWi‐Fi/BTfunctionality)
•External32kHzcrystaloscillatorforRTCwithcalibration
•Twotimergroups,including2x64‐bittimersand1xmainwatchdogineachgroup
•RTCtimerwithsub‐secondaccuracy
•RTCwatchdog