Huawei MG323 manual Power Supply Features, Input Power Supply, Working Current, Vbat Vcoin

	HUAWEI MG323 GSM M2M Module
	Hardware Guide				Electrical and Reliability Features
Function		Signal Name	I/O	Waveform and	Remarks
				Level
		INTMIC_N	AI		Negative end of differential handset MIC input
					through channel 1
		EXTEAR_N	AO		Negative end of differential speaker output
					through channel 2
		EXTEAR_P	AO		Positive end of differential speaker output
					through channel 2
		INTEAR_P	AO		Positive end of differential speaker audio
					output through channel 1
		INTEAR_N	AO		Negative end of differential speaker audio
					output through channel 1
NC pin		NC			Pins 9, 13, 15, 17, 19, 21, 23, 26, 27, 30, 31,
					and 39 are internal pins. These pins need to
					be left floating when they are used.

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 output.

5.5 Power Supply Features

5.5.1Input Power Supply

Table 5-5lists the requirements for input power of the MG323 module.

Table 5-5Requirements for input power of the MG323 module

Parameter	Minimum Value	Typical Value	Maximum Value	Unit
VBAT	3.30	3.80	4.80	V
VCOIN	2.00	3.00	3.15	V

5.5.2Working Current

Table 5-6lists the working current of the MG323 module.

Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	40
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