Quectel EG915U-EU - Pin Assignment

LTE Standard Module Series
EG915U-EU_Hardware_Design 16 / 81
The following figure illustrates the pin assignment of the module.
1
2
3
4
5
6
7
11
12
13
14
15
16
17
18
50 51 52 53 54
55
58 59 60 61 62
31 30 29 28 27 26 23 22
21 20 19
10
9
8
49
48
47
46
45
44
43
40
41
42
39
38
37
36
35
34
33
32
24 25
57
56
63
64
65
66
67
68
83
84
85
86
87
88
98
97
96
95
94
93
78
77
76
75
74
73
91 92
89 90
71
72
69 70
80
79
82 81
100
99
102 101
PSM_IND
ADC1
RESERVED
SPI_CS SPI_CLK
ANT_MAIN
AP _READY
STATUS
NET_STATUS
PCM_CLK
PCM_SYNC
PCM_DIN
PCM_DOUT
W_DISABLE#
GND
USB_VBUS
USB_DP
USB_DM
RESERVED
RESERVED
RESERVED
RESERVED
PWRKEY
DBG_RXD
DBG_TXD
ADC0
VDD_EXT
MAIN_DTR
GND
MAIN_RI
MAIN_DCD
MAIN_RTS
MAIN_TXD
MAIN_RXD
VBAT_BB
MAIN_CTS
I2C_SCL
I2C_SDA
VBAT_BB
GND
GND
GND
RESERVED
VBAT_RF VBAT_RF
GND GND
AN T_BT/ WIFI_SC AN
GND GND
AUX_TXD
AUX_RXD
RESET_N
USB_BOOT
USIM2_DET
USIM2_CLK
USIM2_RST
US IM2_DA T A
USIM2_VDD
SPI_DIN
SPI_DOUT
RESERVED
RESERVED
PSM_EINT
I2S_CLK
RESERVED
GRFC1
GRFC2
103
104
103
115
114
103
118
113
2
112
111
103
106
105
107
116
103
108
117
109
110
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVEDRESERVED
RESERVED
RESERVED
RESERVED
RESERV ED
RESERVED
RESERVED
119 126
120
121
122 123
124
125
MIC_N MIC_P
SPK_P
SPK_N
RESERVED
RESERVED
RESERVED
MICBIAS
Power Pins
GND Pins
Signal Pins
RESERVED Pins
(U)SIM Pins
USB Pins
ADC Pins UART2 Pins UART1 Pins
Debug UART Pins
SPI Pins
Audio Pins
PCM Pins
USIM1_CLK
USIM1_DATA
USIM1_RST
USIM1_VDD
USIM1_GND
USIM1_DET
RESERVED
GND
PSM Pins
IIC Pins
RESERVED
Figure 2: EG915U-EU Pin Assignment (Top View)
1. USB_BOOT cannot be pulled up before the module startup.
2. Keep NC and RESERVED pins unconnected, all GND pins shall be connected to the ground.
3. The functions of pin 1 and pin 63 are under development and we do not recommend using them.
4. USIM2 is under development, not recommended for the time being. For details, please contact the
technical support of remote communication.
NOTE