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

 

 

that the external peaks and burst do not

 

 

 

 

Vomax=2.95 V

 

 

 

 

 

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

 

 

supply, the RTC can be supplied with power

 

 

 

 

VItype =3.00 V

 

 

the RTC

 

 

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

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIM card

SIM_RST

O

VoHmin=2.32 V

Reset signal of the SIM card

 

 

interface

 

 

VoLmax=0.58 V

 

 

 

(Class B)

 

 

 

 

 

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.

 

 

Page 38
Image 38
Huawei MG323 manual Pins 41, 43, 45, 47, and 49 are power GND External, VBAT=0, Power pin, Ledstatu