Quectel M12 User Manual

M12 Hardware Design
M12_Hardware_Design_V3.3 - 23 -
VILmax=
0.12×SIM_VDD
VIHmin=
0.9×SIM_VDD
VOLmax=
0.12×SIM_VDD
VOHmin=
0.9×SIM_VDD
SIM_
PRESENCE
11
I
SIM card detection
VILmin=-0.3V
VILmax=
0.25×VDD_EXT
VIHmin=
0.75×VDD_EXT
VIHmax=
VDD_EXT+0.3
If unused, keep
this pin open.
AUX ADC
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
ADC0
41
I
General purpose
analog to digital
converter
Voltage range:
0V ~ 2.8V
If unused, keep
this pin open.
ADC1
40
I
RF interface
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
RF_ANT
43
I/O
RF antenna pad
Impedance of 50Ω
Refer to
Chapter 4.
Other interfaces
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
RESERVED
4,5,
27~37
39,53
Keep these pins
open
3.2. Operating modes
The table below briefly summarizes the various operating modes referred to in the following
chapters.
Quectel
Confidential

Quectel M12 Specifications

General

Brand	Quectel
Model	M12
Category	Control Unit
Language	English