SIM802 Hardware Design
Figure Index
FIGURE 1: SIM802 FUNCTIONAL DIAGRAM ................................................................................ 17
FIGURE 2: TOP VIEW OF SIM802 EVB ............................................................................................ 18
FIGURE 3: VBAT INPUT ................................................................................................................. 24
FIGURE 4: REFERENCE CIRCUIT OF THE SOURCE POWER SUPPLY INPUT.......................... 25
FIGURE 5: VBAT VOLTAGE DROP DURING TRANSMIT BURST ............................................... 25
FIGURE 6: TURN ON SIM802 USING DRIVING CIRCUIT ............................................................ 27
FIGURE 7: TURN ON SIM802 USING BUTTON.............................................................................. 27
FIGURE 8 TIMING OF TURN ON SYSTEM ..................................................................................... 28
FIGURE 9: TIMING OF TURN OFF SYSTEM ............................................................................... 30
FIGURE 10: TIMING OF RESTART SYSTEM .................................................................................. 32
FIGURE 11: BATTERY CHARGER AND PACK................................................................................ 33
FIGURE 12: TYPICAL CONNECTION OF DTR ............................................................................... 37
FIGURE 13: RTC SUPPLY FROM NON-CHARGEABLE BATTERY .............................................. 40
FIGURE 14: RTC SUPPLY FROM RECHARGEABLE BATTERY ................................................... 40
FIGURE 15: RTC SUPPLY FROM CAPACITOR ............................................................................... 40
FIGURE 16: PANASONIC EECEMOE204A CHARGE CHARACTERISTIC .................................. 41
FIGURE 17: MAXELL TC614 CHARGE CHARACTERISTIC......................................................... 41
FIGURE 18: SEIKO TS621 CHARGE CHARACTERISTIC.............................................................. 42
FIGURE 19: CONNECTION OF SERIAL PORTS.............................................................................. 44
FIGURE 20: CONNECTION OF SOFTWARE UPGRADE ................................................................ 45
FIGURE 21: CONNECTION OF SOFTWARE DEBUG ..................................................................... 46
FIGURE 22: RS LEVEL CONVERTER CIRCUIT.............................................................................. 46
FIGURE 23: SPEAKER INTERFACE CONFIGURATION ................................................................ 48
FIGURE 24: SPEAKER INTERFACE WITH AMPLIFIER CONFIGURATIO.................................. 48
FIGURE 26: EARPHONE INTERFACE CONFIGURATION............................................................. 49
FIGURE 27: SIM INTERFACE REFERENCE CIRCUIT WITH 6 PINS SIM CARD ....................... 52
FIGURE 28: AMPHENOL C707-10M006 512 2 SIM CARD HOLDER ............................................ 53
FIGURE 29: MOLEX 91228 SIM CARD HOLDER ........................................................................... 54
FIGURE 30: SIM802 SERVICES AS RECEIVER............................................................................... 56
FIGURE 31: SIM802 SERVICES AS CALLER................................................................................... 56
FIGURE 32: REFERENCE CIRCUIT FOR NETWORK STATUS LED ............................................ 57
FIGURE 33: I2C APPLICATION OF THE SRD INTERFACE............................................................ 58
FIGURE 34: SPI APPLICATION OF THE SRD INTERFACE ........................................................... 58
FIGURE 35: REFERENCE CIRCUIT OF BUZZER ........................................................................... 59
FIGURE 36: RF PAD (BOTTOM VIEW) ............................................................................................ 60
FIGURE 37: SIM802 TOP VIEW ......................................................................................................... 65
FIGURE 38: SIM802 SIDE VIEW ....................................................................................................... 66
FIGURE 39: SIM802 BOTTOM VIEW ............................................................................................... 66
FIGURE 40: PAD BOTTOM VIEW ..................................................................................................... 67
FIGURE 41: FOOTPRINT RECOMMENDATION ............................................................................. 68
FIGURE 42: SIM802 PINS DEFINITION (TOP VIEW) .................................................................. 70
FIGURE 43: BOTTOM VIEW OF SIM802 ......................................................................................... 71
SIM802_HD_V2.01 12.01.2010
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