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ATKSIMAGSM(GPRS)模块用户手册V精要.pdf

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用户手册高性能GSM/GPRS模块 ATK-SIM900A用户手册修订历史版本日期原因 2013/05/09 第一次发布 2014/04/02 模块电路有变更(功能不变) User Manual ALIENTEK 高性能GSM/GPRS模块用户手册 ATK-SIM900A 用户手册目录 ....................................................................................................................1 ....................................................................................................................3 模块简介...........................................................................................................................3 模块硬件资源详解...........................................................................................................5 GSM模块(U2).........................................................................................................5 RTC后备电池(BAT1).........................................................................................5 麦克风(MIC)/耳机接口(PHONE)..........................................................................5 RS232选择接口(P3)...............................................................................................5 RS232串口().....................................................................................5 锂电池接口(P6)......................................................................................................5 电源输入接口(DC_IN)..........................................................................................5 电源指示灯(PWR).................................................................................................6 电源开关(K1).........................................................................................................6 翻盖式SIM卡座(U4)..........................................................................................6 SMA天线接口(J1)................................................................................................6 开机/关机按键(PWR_KEY)..........................................................................

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