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FIBOCOM NL668-AM Hardware User Manual
Page 22 of 62
Pin
Pin Name
I/O Level
Description
130
SDC1_DATA_2
I/O
Reserved
131
SDC1_DATA_1
I/O
Reserved
132
SDC1_DATA_0
I/O
Reserved
133
SDC1_CLK
O
Reserved
134
SDC1_CMD
I/O
Reserved
135
WAKE_WLAN
I
Reserved
136
WLAN_EN
I
Reserved
137
COEX_UART_RXD
I
Reserved
138
COEX_UART_TXD
I/O
Reserved
139
BT_EN
I
Reserved
140
NC
-
-
NC
141
NC
-
-
NC
142
NC
-
-
NC
143
NC
-
-
NC
144
NC
-
-
NC
Table 3-1 Pin Definitions
Note:
Keep the unused pins floating.
Pin73
~
Pin112 is the module thermal pad, and the corresponding ground pad is reserved for PCB
packaging and welded.
3.2 Power Supply
The power interfaces of NL668-AM module are shown in the following table:
Pin Name
I/O
Pin
Description
VBAT_RF
I
57,58
Module power supply, 3.3~4.3V, typical value 3.8V
VBAT_BB
I
59,60
Module power supply, 3.3~4.3V, typical value 3.8V
VDD_EXT
O
7
Voltage Output, 1.8V, 80mA
GND
-
8,9,10,19,22,36,46,48,5
0-54,56,72-112
Ground
Table 3-2 Power Interfaces
Note:
In the rest of the document, VBAT_BB, VBAT_RF will be replaced with VBAT.
