Power Interface, Overview, Vio, Vbat | Huawei MG323 instruction

		HUAWEI MG323 GSM M2M Module
		Hardware Guide				Description of the Application Interfaces

	Pin	Pin Name		I/O	Description		DC Characteristics (V)
	No.
	No.	Normal	MUX				Min.	Tpy.	Max
		Normal	MUX				Min.	Tpy.	Max

	39	NC	-	-	Not connected, please		-	-	-
					keep this pin open

	40	VIO	-	P	External power output		2.70	2.80	2.95

	41	GND	-	-	Ground		-	-	-

	42	VBAT	-	P	Power supply input		3.30	3.80	4.80

	43	GND	-	-	Ground		-	-	-

	44	VBAT	-	P	Power supply input		3.30	3.80	4.80

	45	GND	-	-	Ground		-	-	-

	46	VBAT	-	P	Power supply input		3.30	3.80	4.80

	47	GND	-	-	Ground		-	-	-

	48	VBAT	-	P	Power supply input		3.30	3.80	4.80

	49	GND	-	-	Ground		-	-	-

	50	VBAT	-	P	Power supply input		3.30	3.80	4.80

P indicates power pins; I indicates pins for digital signal input; O indicates pins for digital signal output; AI indicates pins for analog signal input; AO indicates pins for analog signal input.

The NC (Not Connected) pins are internally connected to the module. Therefore, these pins should not be used, otherwise they may cause problems. Please contact us for more details about this information.

3.3Power Interface

3.3.1Overview

The power supply part of the B2B interface of the MG323 module contains:

VBAT interface for the power supply

VCOIN interface for the standby power supply of the real-time clock (RTC)

VIO interface for external power output

Table 3-2lists the definitions of the pins on the power supply interface.

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	16
		Copyright © Huawei Technologies Co., Ltd.

Image 16

Huawei MG323 manual Power Interface, Overview, Vio, Vbat

Contents

Issue Date Hardware Guide No Warranty About This Document HistoryVersion Date Chapter Descriptions Creation Version Date Chapter Descriptions Updated -3 Recommended Updated .8 Audio InterfaceSpecifications of the antenna interface Contents Electrical and Reliability Features Introduction Overview Feature Description Overall DescriptionAbout This Chapter Function Overview DRX=2 DRX=5 DRX=9SMS Gprs Gprs Class Application Block Diagram Circuit Block Diagram 2Circuit block diagram of the MG323 module B2B Connector Interface Description of the Application Interfaces Pin Pin Name Description DC Characteristics Normal Min Tpy Max Reset TermonUART1DCD Ledstatus Power Interface OverviewVIO Vbat Pin No Signal Name Description Vbat InterfaceGND Vcoin DCE Vcoin Interface Power-On and Power-Off Time SequenceVIO Interface Pin for controlling power-on and power-off Power-On Time SequencePin for resetting the hardware Power-Off Time Sequence Signal Control InterfaceReset Input Signal Control Pins Pin for network status LED Application Device Output Signal Control PinWorking or Network Status Pin No Signal Name Description Feature Direction Uart Interface Circuit Recommended for the Uart Interface DCE receive DTE transmits DTE to DCE Data Serial dataDCE data DTE is ready DTE to DCE Terminal ready DCE data set DCE is ready DCE to DTE Ready Clock signal of the SIM card Power supply of the SIM cardData signal of the SIM card Reset signal of the SIM card Ground signal of the SIM card Circuit Recommended for the SIM Card Interface 12External circuit for 32 Ω handsets/16 Ω headsets Audio Interface 13External circuit for the microphone interface Antenna Installation Antenna Interface Coaxial Cable and RF Connector Environmental Type Material Condition Huawei MG323 GSM M2M Module Hardware Guide Antenna Interface RF Specifications of the Antenna Interface Specification Minimum Typical Maximum Unit ValueESD Protection for the Antenna Interface Uplink frequency range GSM 824 849 MHz Specification Minimum Typical Maximum Unit Value Specifications of the Antenna Interface Polarization Linear polarization Pattern Omnidirectional Electrical and Reliability Features Symbol Specification Minimum Value Maximum Value UnitExternal power voltage Extreme Working Conditions Operating and Storage Temperatures and Humidity Specification Minimum Value Maximum Value UnitPin No Signal Name Electrical Criteria of Application Interfaces Function Signal Name Waveform Remarks Level Power supplyVoltage great drop. The Vbat power voltage Than 3.3 Pins 41, 43, 45, 47, and 49 are power GND External Power pinVBAT=0 Ledstatu UART1RIN UART1 UART1RDUART1DSR UART1RTS UART1DTR UART1CTS UART1DCD Power Supply Features Input Power SupplyWorking Current Parameter Minimum Value Typical Value Maximum Value Unit Configuration Working Mode Typical value Unit RemarkBand Typical Unit Reliability Features Configuration ValueUp/1 Down 123 Test Condition Standard Test Condition Standard ESD Test Standard Contact Discharge Air Discharge ESD FeaturesEN61000-4-2 ±4 kV ±8 kV Dimensions Mechanical SpecificationsDimensions L x W x H 35 mm x 32.5 mm x 3.05 mm Dimensions of the B2B Connector 1Dimensions of the MG323 module unit mm Model Stacking HRS Number Height mm MG323 Module Installation Description 5Structure fixing hole 6MG323 module installation Specification Selection for Fasteners 7Machine screw dimensions 8Nut dimensions Appendix a Circuits of Typical Interfaces 1Circuits of typical interfaces in the MG323 module Appendix B Acronyms and Abbreviations Acronym or Abbreviation Expansion Pbcch PCBPDU RTC