SIM300DZ Hardware Design
SIM300DZ_HD_V2.04 03.04.2007 3
Contents
Contents ............................................................................................................................................3
Version history..................................................................................................................................7
1 Introduction....................................................................................................................................8
1.1 Related documents ...............................................................................................................8
1.2 Terms and abbreviations.......................................................................................................9
2 Product concept............................................................................................................................ 11
2.1 SIM300DZ key features at a glance ...................................................................................12
3 Application interface....................................................................................................................14
3.1 SIM300DZ pin description.................................................................................................14
3.2 Operating modes ................................................................................................................16
3.3 Power supply ......................................................................................................................18
3.3.1 Power supply pins ....................................................................................................18
3.3.2 Minimizing power losses..........................................................................................19
3.3.3 Monitoring power supply .........................................................................................19
3.4 Power up / down scenarios.................................................................................................19
3.4.1 Turn on SIM300DZ ..................................................................................................19
3.4.2 Turn off SIM300DZ .................................................................................................21
3.4.3 Restart SIM300DZ using the PWRKEY pin ............................................................24
3.5 Charging interface..............................................................................................................24
3.5.1 Battery pack characteristics......................................................................................25
3.5.2 Recommended battery pack .....................................................................................26
3.5.3 Implemented charging technique..............................................................................26
3.5.4 Operating modes during charging ............................................................................27
3.5.5 Charger requirements ...............................................................................................29
3.6 Power saving ......................................................................................................................29
3.6.1 Minimum functionality mode...................................................................................29
3.6.2 SLEEP mode (slow clocking mode).........................................................................29
3.6.3 Wake up SIM300DZ from SLEEP mode.................................................................30
3.7 Summary of state transitions (except SLEEP mode) .........................................................30
3.8 RTC backup........................................................................................................................31
3.9 Serial interfaces..................................................................................................................34
3.9.1 Function of Serial port and Debug port supporting..................................................35
3.9.2 Software upgrade and serial Port..............................................................................36
3.10 Audio interfaces ...............................................................................................................38
3.10.1 Speaker interface configuration..............................................................................39
3.10.2 Microphone interfaces configuration......................................................................40
3.10.3 Earphone interface configuration ...........................................................................41
3.10.4 Referenced electronic characteristic.......................................................................41
3.11 SIM interface....................................................................................................................42
3.11.1 SIM card application ..............................................................................................42
评论0
最新资源