Pin Assignment - Quectel EC25-AUX Hardware Design

3.2. Pin Assignment

The following figure shows the pin assignment of EC25 module.
1) 1
WAKEUP_IN
2
AP_READY
3
RESERVED
W_DISABLE# 4
1) 5
NET_MODE
6
NET_STATUS
VDD_EXT 7
141
RESERVED
142
RESERVED
8
GND
9
GND
10
USIM_GND
11
DBG_RXD
12
DBG_TXD
13
USIM_PRESENCE
14
USIM_VDD
USIM_DATA 15
USIM_CLK 16
17
USIM_RST
18
RESERVED
NOTES
1)
1. means pins WAKEUP_IN, NET_MODE, WLAN_EN, COEX_UART_RX, COEX_UART_TX,
USB_BOOT and BT_CTS cannot be pulled up before startup.
2)
2. PWRKEY output voltage is 0.8V because of the diode drop in the Qualcomm chipset.
3)
3. means digital audio (PCM) is only supported on Telematics version.
4. Pins 37~40, 118, 127 and 129~139 are used for wireless connectivity interfaces, among which pins
118, 127 and 129~138 are WLAN function pins, and the rest are Bluetooth (BT) function pins. BT
function is under development.
EC25_Hardware_Design
129 117
108
103
130 118
131 119
132
120
104
109
133
121
134
122
110 105
135 123
1)
136 124
111 106
1)
137 125
1)
138 126
139 127
107
112
140 128
Power Pins Signal Pins
GND Pins Bluetooth Pins
Figure 2: Pin Assignment (Top View)
99 95 90
100 91
96
82
79 76 73
83 80 77 74
92
84 81 78
75
97 93
101
94
102 98
WLAN Pins
SGMII Pins
LTE Standard Module Series
EC25 Hardware Design
54 GND
53 GND
52
GND
85
51
GND
50
GND
49
ANT_MAIN
86
48
GND
144
RESERVED
143
RESERVED
47
ANT_GNSS
87
46
GND
45
ADC0
44
ADC1
88
43
RESERVED
42
I2C_SDA
41
I2C_SCL
89
40
BT_CTS
39
BT_RXD
38
BT_TXD
37
BT_RTS
RESERVED Pins
1)
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