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HUAWEI MG323 GSM M2M Module
Hardware Guide
Description of the Application Interfaces
Issue 06 (2013-06-13)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
15
Pin
No.
Pin Name I/O Description DC Characteristics (V)
Normal MUX Min. Tpy. Max
17 NC - -
Not connected, please
keep this pin open
- - -
18 GND - - Ground - - -
19 NC - -
Not connected, please
keep this pin open
- - -
20 TERM_ON - I
Power on/power off
control
-
internal
pulled up
-
21 NC - -
Not connected, please
keep this pin open
- - -
22 RESET - I Hardware reset 0.40 2.80 3.20
23 NC - -
Not connected, please
keep this pin open
- - -
24 UART1_DCD - O DCE data carrier detect 0.40 2.80 3.20
25 LED_STATUS - O
Network status
indication
0.40 2.80 3.20
26 NC - -
Not connected, please
keep this pin open
- - -
27 NC - -
Not connected, please
keep this pin open
- - -
28 UART1_CTS - O DCE clear to send 0.40 2.85 3.25
29 UART1_RD - O DCE transmit data 0.40 2.85 3.25
30 NC - -
Not connected, please
keep this pin open
- - -
31 NC - -
Not connected, please
keep this pin open
- - -
32 UART1_DTR - I
DCE data terminal
ready
0.40 2.80 3.20
33 UART1_TD - I DCE receive data 0.40 2.80 3.20
34 UART1_RTS - I DCE request to send 0.40 2.85 3.25
35 VCOIN - P
Standby power input of
the RTC
2.00 3.00 3.15
36 UART1_DSR - O DCE data set ready 0.40 2.80 3.20
37 NC - -
Not connected, please
keep this pin open
- - -
38 UART1_RING - O DCE ring indicator 0.40 2.80 3.20