L8011 GS GPRS odem User’s anual
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Content
ML8011GPRSModem User sManual.............................................................................................. 1
1.Introduction.......................................................................................................................................3
2.Productconcept.................................................................................................................................3
3.Applicationinterface......................................................................................................................... 5
3.1PinDescription............................................................................................................................. 5
3.2Operatingmodes......................................................................................................................... 6
3.3Powersupply(VBAT)................................................................................................................ 7
3.4Powerupandpowerdownscenarios......................................................................................... 8
3.4.1PowerOn.............................................................................................................................. 8
3.4.2PowerdownmoduleusingthePWRKEY pin................................................................... 9
3.4.3PowerdownmoduleusingAT command.......................................................................... 9
3.4.4Over-voltageorunder-voltageautomaticshutdown.......................................... 10
3.4.5Restartmoduleusing thePWRKEY pin..........................................................................10
3.5Powersaving.............................................................................................................................11
3.5.1Minimumfunctionalitymode...........................................................................................11
3.5.2SLEEPmode(slowclockmode)......................................................................................12
3.5.3WakeupmodulefromSLEEPmode...............................................................................12
3.6Summaryofstatetransitions....................................................................................................12
3.7Serialinterfaces.........................................................................................................................13
3.8LEDindication...........................................................................................................................13
3.8.1GreenLedisthepower indication....................................................................................13
3.8.2RedLedistheWorkingstateindication..........................................................................13
4.Mechanicaldimension....................................................................................................................14
5.ProductList......................................................................................................................................15
