SimCom SIM900B Hardware Design page 5

Application note (35 pages)

User manual (21 pages)

Development kit manual (20 pages)

Table of Contents

Smart Machine Smart Decision

Table Index

TABLE 1: SIM900B KEY FEATURES ............................................................................................................................. 8

TABLE 2: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE ............................ 10

TABLE 3: OVERVIEW OF OPERATING MODES........................................................................................................ 10

TABLE 4: PIN DESCRIPTION ....................................................................................................................................... 12

TABLE 5:THE CURRENT CONSUMPTION OF MINIMUM FUNCTIONALITY MODE ......................................... 19

TABLE 6: MICROPHONE INPUT CHARACTERISTICS ............................................................................................ 26

TABLE 7: AUDIO OUTPUT CHARACTERISTICS ...................................................................................................... 26

TABLE 8: PIN DESCRIPTION (AMPHENOL SIM CARD HOLDER)......................................................................... 28

TABLE 9: PIN DESCRIPTION (MOLEX SIM CARD HOLDER) ................................................................................ 29

TABLE 10: ADC SPECIFICATION ................................................................................................................................ 30

TABLE 11: RI BEHAVIORS ........................................................................................................................................... 30

TABLE 12: STATUS OF THE NETLIGHT PIN.............................................................................................................. 31

TABLE 13: PIN DEFINITION OF THE KEYPAD INTERFACE................................................................................... 32

TABLE 14: ABSOLUTE MAXIMUM RATINGS........................................................................................................... 34

TABLE 15: RECOMMENDED OPERATING CONDITIONS ....................................................................................... 34

TABLE 16: DIGITAL INTERFACE CHARACTERISTICS ........................................................................................... 34

TABLE 17: SIM CARD INTERFACE CHARACTERISTICS........................................................................................ 35

TABLE 18: SIM_VDD CHARACTERISTICS................................................................................................................ 35

TABLE 19: VRTC CHARACTERISTICS ....................................................................................................................... 35

TABLE 20: CURRENT CONSUMPTION ...................................................................................................................... 35

TABLE 21: THE ESD CHARACTERISTICS (TEMPERATURE: 25℃, HUMIDITY: 45 %) ....................................... 36

TABLE 22: SIM900B GSM 900 AND GSM 850 CONDUCTED RF OUTPUT POWER.............................................. 37

TABLE 23: SIM900B DCS 1800 AND PCS 1900 CONDUCTED RF OUTPUT POWER ............................................ 38

TABLE 24: SIM900B CONDUCTED RF RECEIVE SENSITIVITY............................................................................. 39

TABLE 25: SIM900B OPERATING FREQUENCIES.................................................................................................... 39

TABLE 26: PIN ASSIGNMENT...................................................................................................................................... 45

TABLE 27: RELATED DOCUMENTS ........................................................................................................................... 46

TABLE 28: TERMS AND ABBREVIATIONS................................................................................................................ 47

TABLE 29: SAFETY CAUTION..................................................................................................................................... 48

SIM900B_Hardware Design_V2.01

2012-05-07

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