Quectel EC25-A, User Manual

Page: 16 / 70

W
A
R
W_
N
NET
USIM_P
U
U
U
U
R
U
R
R
1. Keep a
2. GND pa
not be d
3. “
※
” mea
NOTES
E
3
1
4
5
6
7
2
WAKEUP _IN
AP_READY
RESERVED
_DISABLE#
NET_MODE
T_STATUS
VDD_EXT
GND
GND
DBG_RXD
DBG_TXD
PRESENCE
USIM_VDD
SIM_DATA
USIM_CLK
USIM_RST
RESERVED
8
9
10
11
12
13
14
15
16
17
18
USIM_GND
RESERVED
RESERVED
141
142
all RESERVE
ads 85~112
designed in
ans these in
EC25-A_Us
19
72
G
N
D
G
N
D
11
3
R
E
SE
R
V
ED
R
E
SE
R
V
ED
117
126
125
124
123
122
121
120
119
118
127
128
11
5
RE
S
E
RV
E
D
RE
S
E
RV
E
D
11
6
139
140
138
137
136
135
134
133
132
131
130
129
11
4
Power Pins
Fi
EDpins and
should be c
schematic a
terface func
ser_ManualC
20 21 22 23 19
72 71 70 69 68
G
N
D
RE
S
E
T
_
N
PW
R
K
E
Y
GN
D R
E
S
E
R
V
E
D
G
N
D
US
B
_
V
B
US
US
B
_
D
M
US
B
_
DP
R
X
D
106
107
111
112
103
104 109
105 110
108
GND
gure 2: Pin
unused pins
connected to
and PCB de
ctions are on
Confidentia
23 24 25 26 27
68 67 66 65 64
R
E
S
E
R
V
E
D
PC
M
_IN
※
PC
M
_O
U
T
※
PC
M
_S
Y
N
C
※
PC
M
_C
L
K
※
TX
D
DT
R
RT
S CT
S
76
77
78 79
80
81 82
83
84
100
101
102 9
99
D Pins
n Assignme
s unconnect
o ground in t
ecal.
nly supporte
al / Release
28 29 30 31
63 62 61 60
RE
S
E
RV
E
D
RE
S
E
RV
E
D
RE
S
E
RV
E
D
RE
S
E
RV
E
D
DC
D
RI
ST
A
T
U
S
VB
A
T
_
B
B
V
B
A
T
_
B
B
73
74
75
94 98
93 97
91 96
90 95
92
Signal Pins
ent (Top Vie
ted.
the design, a
d on
Telema
d 15 / 6
34 35 36 32 33
59 58 57 56 55
R
ES
E
R
VE
D
RE
S
E
RV
E
D
AN
T
_D
IV
G
N
D
V
B
A
T
B
B
VB
A
T
_
R
F
VB
AT
_
R
F
GN
D
R
E
S
E
R
V
E
D
89
88
86
85
87
RE
S
E
RV
E
D
RES
ew)
and RESER
atics
versio
L
EC25-AU
69
36
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
55
G
N
D
R
E
S
E
R
V
E
D
GND
GND
ANT_
GND
ANT
GND
ADC
RES
I2C_
I2C_
RES
ADC
GND
GND
GND
RES
RES
RES
SERVED Pins
RES
RES
143
144
RVED pads 7
on.
LTE Module
ser Manua
D
D
_MAIN
D
_GNSS
D
C 1
ERVED
_SDA
_SCL
ERVED
C0
D
D
D
ERVED
ERVED
ERVED
ERVED
ERVED
73~84should
e
al
d
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