M12 Hardware Design
M12_Hardware_Design_V3.3
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2. Product concept
M12 is a Dual-band GSM/GPRS engine that works at frequencies of GSM900MHz and
DCS1800MHz. M12 features GPRS multi-slot class 12 and supports the GPRS coding schemes
CS-1, CS-2, CS-3 and CS-4. For more details about GPRS multi-slot classes and coding schemes,
please refer to
Appendix A
and
Appendix B
.
With a tiny profile of 29mm×29mm×3.6 mm, the module can meet almost all the requirements for
M2M applications, including Tracking and Tracing, Intelligent Instrument, Wireless POS,
Security, Telematics, Remote Controlling, etc.
M12 is a SMD type module, which can be embedded in customer application through its 64-pin
pads. It provides all hardware interfaces between the module and customer’s host board.
Designed with power saving technique, the current consumption of M12 is as low as 1.3 mA in
SLEEP mode when DRX is 5.
M12 is integrated with Internet service protocols, which are TCP/UDP, FTP and HTTP. Extended
AT commands have been developed for customer to use these Internet service protocols easily.
The modules are fully RoHS compliant to EU regulation.
2.1. Key features
Table 3: Module key features
Feature
Implementation
Power supply
Single supply voltage: 3.3V ~4.6V
Typical supply voltage: 4V
Power saving
Typical power consumption in SLEEP mode
：
1.3mA@ DRX=5
1.2mA@ DRX=9
Frequency bands
Dual-band: GSM900, DCS1800
The module can search these frequency bands automatically
The frequency bands can be set by AT command.
Compliant to GSM Phase 2/2+
GSM class
Small MS
Transmitting power
Class 4 (2W) at GSM900
Class 1 (1W) at DCS1800
GPRS connectivity
GPRS multi-slot class 12 (default)
GPRS multi-slot class 1~12 (configurable)
GPRS mobile station class B
Temperature range
Normal operation:
-35°C ~ +75°C
Quectel
Confidential
