User's Manual

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on/off by pressing the switch button. It’s recommended to use ESD protection device close to the switch button.
5） EXT_RST_IN is used as reset signal for U6100 module. U6100 will be reset when connect EXT_RST_IN to
ground. It’s better to use a switch button connected to EXT_RST_IN and ground, so the module can be reset by
pressing the switch button. It’s recommended to use ESD protection device close to the switch button.
6） U6100 provides HKADC which can be used to measure some external analog signal, such as battery voltage,
temperature and so on. The voltage input range of the HKADC is : 0～2.6V。
7） SLIC_INT and SLIC_RESET are the signals for peripheral device. SLIC_INT is for interrupt, SLIC_RESET is for
reset.
3. U6100 key features
The U6100 module has features such as internet access, SMS, start-up mode switching, and extended mass memory.
The features are described in following sections. For detail information about AT commands, please make refers to the
related documents.
3.1 Internet access
AT commands can be used for querying/setting the network band, selecting network mode, setting the network search
mode, setting register mode, querying network signal strength, setting APN and so on. The related AT commands are
listed as follows:
·Network Band Set: AT+ BNDPRF =<nv441>, <nv946>
·Network Band Query: AT+BNDPRF?
·Network Mode Set: AT+MODODR=<mode >
·Network Mode Query: AT+MODODR?
·SIM LOCK status: AT+NWLCK?
·Network Mode Service Query: AT+MODPRF?
·Network Query: AT+PSRAT
·PIN and PUK Remain Times Query: AT+CPNNUM
·APN Set: AT+CGDCONT=1,"IP","CMNET"
·Dial up Access: ATDT*99***1#
·Network Disconnecting: ATH
The users need to use PPP protocol for internet access besides AT commands. The PPP protocol can be provided by