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Smart Machine Smart DecisionBog'liq SIM800L davlat-standarti-asosida-chizmalarni-taxt-qilish, Test tayyorlanishga (2), Asbobsozlik materiallari Qirindi hosil bo’lish jarayoni, Testlar to\'plami 2021, маруза, Referat Psixologiya fanidan Mavzu Temperament va uning tiplari, Хавоканд, MInimalizm uslubining milliy uylarimizdagi muhim jihatlari, ttb 6, Исокжонов Жамшидбек 89 А 20-гурух, xx asrning 60-80-yillarida ozbekistonda suv resurslaridan foydalanish muammolari, Саволлар Коллеж учун, betlik, 55555, lira Smart Machine Smart Decision
SIM800H&SIM800L_Hardware Design_V2.02 8 2015-07-27
Figure Index
FIGURE 1: SIM800H&SIM800L FUNCTIONAL DIAGRAM ...................................................................................... 14
FIGURE 2: PIN ASSIGNMENT (TOP VIEW)................................................................................................................ 15
FIGURE 3: DIMENSIONS OF SIM800H&SIM800L (UNIT: MM)............................................................................... 18
FIGURE 4: RECOMMENDED PCB FOOTPRINT OUTLINE (UNIT: MM) ................................................................ 19
FIGURE 5: REFERENCE CIRCUIT OF THE VBAT INPUT......................................................................................... 20
FIGURE 6: REFERENCE CIRCUIT OF THE LDO POWER SUPPLY ......................................................................... 20
FIGURE 7: REFERENCE CIRCUIT OF THE DC-DC POWER SUPPLY..................................................................... 21
FIGURE 8: VBAT VOLTAGE DROP DURING TRANSMIT BURST........................................................................... 21
FIGURE 9: THE MINIMAL VBAT VOLTAGE REQUIREMENT AT VBAT DROP .................................................... 22
FIGURE 10: POWERED ON/OFF MODULE USING TRANSISTOR.......................................................................... 22
FIGURE 11: POWERED ON/OFF MODULE USING BUTTON .................................................................................. 22
FIGURE 12: TIMING OF POWER ON MODULE......................................................................................................... 23
FIGURE 13: TIMING OF POWER DOWN SIM800H&SIM800L BY PWRKEY......................................................... 23
FIGURE 14:TIMING OF RESTART SIM800H&SIM800L............................................................................................ 25
FIGURE 15: RESET CIRCUIT........................................................................................................................................ 25
FIGURE 16: RESET TIMING SEQUENCE.................................................................................................................... 26
FIGURE 17: RTC SUPPLY FROM CAPACITOR........................................................................................................... 28
FIGURE 18: RTC SUPPLY FROM NON-CHARGEABLE BATTERY ......................................................................... 28
FIGURE 19: RTC SUPPLY FROM RECHARGEABLE BATTERY .............................................................................. 28
FIGURE 20: CONNECTION OF THE SERIAL INTERFACES..................................................................................... 30
FIGURE 21: RESISTOR MATCHING CIRCUIT ........................................................................................................... 31
FIGURE 22 : DIODE ISOLATION CIRCUIT................................................................................................................. 31
FIGURE 23: TX LEVEL MATCHING CIRCUIT ........................................................................................................... 31
FIGURE 24: RX LEVEL MATCHING CIRCUIT........................................................................................................... 32
FIGURE 25: USB REFERENCE CIRCUIT .................................................................................................................... 32
FIGURE 26: CONNECTION FOR SOFTWARE UPGRADING AND DEBUGGING.................................................. 33
FIGURE 27: RI BEHAVIOUR OF VOICE CALLING AS A RECEIVER...................................................................... 34
FIGURE 28: RI BEHAVIOUR OF DATA CALLING AS A RECEIVER........................................................................ 34
FIGURE 29: RI BEHAVIOUR OF URC OR RECEIVE SMS ........................................................................................ 35
FIGURE 30: RI BEHAVIOUR AS A CALLER ............................................................................................................... 35
FIGURE 31: SPEAKER REFERENCE CIRCUIT .......................................................................................................... 36
FIGURE 32: SPEAKER WITH AMPLIFIER REFERENCE CIRCUIT ......................................................................... 37
FIGURE 33: REFERENCE CIRCUIT OF THE 8-PIN SIM CARD HOLDER............................................................... 38
FIGURE 34: REFERENCE CIRCUIT OF THE 6-PIN SIM CARD HOLDER............................................................... 39
FIGURE 35: MOLEX 91228 SIM CARD HOLDER ...................................................................................................... 40
FIGURE 36: AMPHENOL C707 10M006 512 SIM CARD HOLDER........................................................................... 41
FIGURE 37: PCM REFERENCE CIRCUIT.................................................................................................................... 43
FIGURE 38: LCD REFERENCE CIRCUIT .................................................................................................................... 43
FIGURE 39: SD REFERENCE CIRCUIT ....................................................................................................................... 43
FIGURE 40: 25 KEYS REFERENCE CIRCUIT............................................................................................................. 44
FIGURE 41: 50 KEYS REFERENCE CIRCUIT............................................................................................................. 45
FIGURE 42: KEYPAD REFERENCE CIRCUIT ............................................................................................................ 45
FIGURE 43: KEYPAD DETECTED ............................................................................................................................... 45
FIGURE 44: GPIO TIMING SEQUENCES .................................................................................................................... 47
FIGURE 45: REFERENCE CIRCUIT OF PWM DRIVER BUZZER ............................................................................ 48
FIGURE 46: REFERENCE CIRCUIT OF NETLIGHT .................................................................................................. 49
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