Specifications

3.4.2StandbyPowerConsumption
Thefollowingcurrentconsumptionisbasedon3.3Vsupplyand25°Cambientwith
internalregulators.ValuesaremeasuredatantennaportwithoutSAWfilter.Allthe
transmissionmeasurementsvaluesarebasedon90%dutycycle,continuoustransmission
mode.
Table‐8StandbyPowerConsumption
Mode Status TypicalValue
Standby
ModemSleep 15mA
LightSleep 0.9mA
DeepSleep 20uA
Off 0.5uA
PowerSaveMode
(2.4G)
(LowPowerListen
disabled)¹
DTIMperiod CurrentCons.(mA) T1(ms) T2(ms) Tbeacon(ms)
T3
(ms)
DTIM1 1.2 2.01 0.36 0.99 0.39
DTIM3 0.9 1.99 0.32 1.06 0.41

①:Modem‐SleeprequirestheCPUtobeworking,asinPWMorI2Sapplications.Accordingto802.11
standards(likeU‐APSD),itsavespowertoshutdowntheWi‐FiModemcircuitwhilemaintainingaWi‐Fi
connectionwithnodatatransmission.E.g.inDTIM3,tomaintainasleep300mswake
3mscycletoreceive
AP’sBeaconpackages,thecurrentisabout15mA.
②:DuringLight‐Sleep,theCPUmaybesuspendedinapplicationslikeWi‐Fiswitch.Withoutdata
transmission,theWi‐FiModemcircuitcanbeturnedoffandCPUsuspendedtosavepoweraccordingtothe
802.11standard(U
‐APSD).E.g.inDTIM3,tomaintainasleep300ms‐wake3mscycletoreceiveAP’sBeacon
packages,thecurrentisabout0.9mA.
③:Deep‐SleepdoesnotrequireWi‐Ficonnectiontobemaintained.Forapplicationwithlongtimelags
betweendatatransmission,e.g.atemperaturesensorthatchecksthetemperature
every100s,sleep300s
andwakinguptoconnecttotheAP(takingabout0.3~1s),theoverallaveragecurrentislessthan1mA.
3.5RFCharacteristics
3.5.1RFConfigurationandGeneralSpecificationsofWirelessLAN
Table‐9RFConfigurationandGeneralSpecificationsofWirelessLAN
Items Specifications Unit
Country/DomainCode Reserved —
CenterFrequency
11b 2.412‐2.472 GHz
11g 2.412‐2.472 GHz
11nHT20 2.412‐2.472 GHz
Rate
11b 1,2,5.5,11 Mbps
11g 6,9,12,18,24,36,48,54 Mbps
11n1stream MCS0,1,2,3,4,5,6,7 Mbps
Modulationtype
11b DSSS —
11g/n OFDM —
