Huawei MG323 Pins 41, 43, 45, 47, and 49 are power GND External, VBAT=0, Power pin, Ledstatu

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	HUAWEI MG323 GSM M2M Module
	Hardware Guide				Electrical and Reliability Features

	Function	Signal Name	I/O	Waveform and	Remarks
				Level
		GND	-		Pins 41, 43, 45, 47, and 49 are power GND
					pins.

	External	VIO	P	Vomin =2.70 V	Pin 40 is a pin for supplying external devices
	power voltage			Votype=2.80 V	with power from the MG323 module. Ensure
	interface			Votype=2.80 V	that the external peaks and burst do not
	interface			Vomax=2.95 V	that the external peaks and burst do not
				Vomax=2.95 V	damage the VIO interface.
				Iomax =10.00 mA	damage the VIO interface.
				Iomax =10.00 mA	If the MG323 module is in Sleep mode, the
					VIO pin is in the enabled low consumption
					state (< 500 uA). If the MG323 module is in
					Power Down mode, the VIO pin is in the
					disabled state.
					This pin can be left open if it is not used.

	Interface for	VCOIN	P	Vomax=3.00 V	Pin 35 is a pin for standby power input of the
	standby			VImin =2.00 V	RTC. When the VBAT is not ready for power
	power input of			VImin =2.00 V	supply, the RTC can be supplied with power
	power input of			VItype =3.00 V	supply, the RTC can be supplied with power
	the RTC			VItype =3.00 V	through an external coin battery or capacitor.
	the RTC			VImax=3.15 V	through an external coin battery or capacitor.
				VImax=3.15 V	This pin can be left openif it is not used.
				IItype =5.00 μA at	This pin can be left openif it is not used.
				IItype =5.00 μA at
				VBAT=0 V

	Power pin	TERM_ON	I	VILmax=0.40 V	Pin 20 is a pin for powering on the module.
				The signal can be	Low level is effective.
				detected when
				low level keeps
				effective for one
				second or more.

	Reset pin	RESET	I	VILmax=0.40 V	Pin 22 is a pin for restarting the module. Low
				The signal can be	level is effective.
				detected when	This pin can be left open if it is not used.
				low level keeps
				effective for 10
				milliseconds or
				more.

	Signal of the	LED_STATU	O	VoHmin=2.70 V	Pin 25 is a pin for controlling the network
	network	S			status LED.
	status LED				This pin can be left open if it is not used.
					This pin can be left open if it is not used.

	SIM card	SIM_RST	O	VoHmin=2.32 V	Reset signal of the SIM card
	interface			VoLmax=0.58 V
	(Class B)			VoLmax=0.58 V
	(Class B)	SIM_DATA	I/O	VoHmin=2.03 V	Data signal of the SIM card
		SIM_DATA	I/O	VoHmin=2.03 V	Data signal of the SIM card
				VoLmax=0.40 V
				VILmax=0.58 V
				VIHmin=2.03 V

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	38
		Copyright © Huawei Technologies Co., Ltd.

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Contents Issue Date Hardware GuideNo Warranty Version Date Chapter Descriptions About This DocumentHistory CreationVersion Date Chapter Descriptions Specifications of the antenna interface Updated .8 Audio InterfaceUpdated -3 Recommended Contents Electrical and Reliability Features Introduction OverviewAbout This Chapter Feature DescriptionOverall Description Function OverviewSMS DRX=2DRX=5 DRX=9 Gprs Gprs ClassApplication Block Diagram Circuit Block Diagram2Circuit block diagram of the MG323 module B2B Connector Interface Description of the Application InterfacesPin Pin Name Description DC Characteristics Normal Min Tpy MaxUART1DCD ResetTermon LedstatusVIO Power InterfaceOverview VbatGND Vcoin Pin No Signal Name DescriptionVbat Interface DCEVIO Interface Power-On and Power-Off Time SequenceVcoin Interface Pin for resetting the hardware Power-On Time SequencePin for controlling power-on and power-off Reset Signal Control InterfacePower-Off Time Sequence Input Signal Control Pins Pin for network status LEDWorking or Network Status Output Signal Control PinApplication Device Pin No Signal Name Description Feature Direction Uart InterfaceDCE data DTE is ready DTE to DCE Terminal ready Circuit Recommended for the Uart InterfaceDCE receive DTE transmits DTE to DCE Data Serial data DCE data set DCE is ready DCE to DTE ReadyData signal of the SIM card Clock signal of the SIM cardPower supply of the SIM card Reset signal of the SIM cardGround signal of the SIM card Circuit Recommended for the SIM Card Interface12External circuit for 32 Ω handsets/16 Ω headsets Audio Interface13External circuit for the microphone interface Antenna Installation Antenna InterfaceCoaxial Cable and RF Connector Environmental Type Material ConditionHuawei MG323 GSM M2M Module Hardware Guide Antenna Interface ESD Protection for the Antenna Interface RF Specifications of the Antenna InterfaceSpecification Minimum Typical Maximum Unit Value Uplink frequency range GSM 824 849 MHzSpecification Minimum Typical Maximum Unit Value Specifications of the Antenna Interface Polarization Linear polarization Pattern OmnidirectionalExternal power voltage Electrical and Reliability FeaturesSymbol Specification Minimum Value Maximum Value Unit Extreme Working ConditionsPin No Signal Name Operating and Storage Temperatures and HumiditySpecification Minimum Value Maximum Value Unit Electrical Criteria of Application InterfacesVoltage great drop. The Vbat power voltage Function Signal Name Waveform Remarks LevelPower supply Than 3.3VBAT=0 Pins 41, 43, 45, 47, and 49 are power GND ExternalPower pin LedstatuUART1DSR UART1RTS UART1DTR UART1CTS UART1DCD UART1 UART1RDUART1RIN Working Current Power Supply FeaturesInput Power Supply Parameter Minimum Value Typical Value Maximum Value UnitBand Typical Unit Working Mode Typical value Unit RemarkConfiguration Up/1 Down 123 Reliability FeaturesConfiguration Value Test Condition StandardTest Condition Standard EN61000-4-2 ±4 kV ±8 kV ESD FeaturesESD Test Standard Contact Discharge Air Discharge Dimensions L x W x H 35 mm x 32.5 mm x 3.05 mm Mechanical SpecificationsDimensions Dimensions of the B2B Connector 1Dimensions of the MG323 module unit mmModel Stacking HRS Number Height mm MG323 Module Installation Description 5Structure fixing hole6MG323 module installation Specification Selection for Fasteners 7Machine screw dimensions8Nut dimensions Appendix a Circuits of Typical Interfaces 1Circuits of typical interfaces in the MG323 moduleAppendix B Acronyms and Abbreviations Acronym or Abbreviation ExpansionPDU PbcchPCB RTC

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