Data Sheet

ESP-15FDatasheetV1.0
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9 页共13
Note
n
Modem-sleepisusedwhensuchapplicatio
nsasPWMorI2SrequiretheCPUtobeworking.Incases
whereWi-Ficonnectivityismaintainedanddatatransmissionisnotrequired,theWi-FiModemcircuit
canbeshutdowntosavepower,accordingto802.11standards(suchasU-APSD).Forexample,in
DTIM3,whenESP8266EXsleepsfor300msandwakesupfor3mstoreceiveBeaconpackagesfrom
AP,theoverallaveragecurrentconsumptionisabout20mA.
n
DuringLight-Sleep,theCPUmaybesuspendedinapplicationslikeWi-Fiswitch.Withoutdata
transmission,theWi-FiModemcircuitcanbeturnedoffandCPUsuspendedtosavepoweraccording
tothe802.11standard(U-APSD).
E.g.inDTIM3,tomaintainasleep300ms-wake3mscycletoreceiveAPsBeaconpackages,the
currentisabout0.9mA.
n
Deep-SleepdoesnotrequireWi-Ficonnectiontobemaintained.Forapplicationwithlongtimelags
betweendatatransmission,e.g.atemperaturesensorthatchecksthetemperatureevery100s,sleep300s
andwakinguptoconnecttotheAP(takingabout0.3~1s),theoverallaveragecurrentislessthan1mA.
3
Appeara
ncesize