WB50NBT
Hardware Integration Guide
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/wi-fi
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P
IN
D
EFINITIONS
Table 1: Pin Definitions
#
Pin Name
Section
I/O
Reference
Description
If Unused
1
GND
-
-
Ground
Must be connected to
GND
2
GPIO_1
GPIO
I/O
VCC3_3
General I/O 1
Leave open
3
SPI_NPCS1
O
VCC3_3
SPI Bus Chip Select 1
Leave open
4
GPIO_2
GPIO
I/O
VCC3_3
General I/O 2
Leave open
5
SPI_NPCS0
O
VCC3_3
SPI Bus Chip Select 0
Leave open
6
GPIO_3
GPIO
I/O
VCC3_3
General I/O 3
Leave open
7
GND
-
-
Ground
Must be connected to
GND
8
GPIO_4
GPIO
I/O
VCC3_3
General I/O 4
Leave open
9
SPI_MOSI
O
VCC3_3
SPI Master Out/Slave In
Leave open
10
DRXD
DBGU
I
VCC3_3
Console/Debug Serial Input
Leave open
11
SPI_MISO
I
VCC3_3
SPI Master In/Slave Out
Leave open
12
DTXD
DBGU
O
VCC3_3
Console/Debug Serial Output
Leave open
13
GND
-
-
Ground
Must be connected to
GND
14
GPIO_5
GPIO
I/O
VCC3_3
General I/O 5
Leave open
15
SPI_CLK
O
VCC3_3
SPI Programming Clock
Master
–
O; Slave
–
I
Leave open
16
GPIO_6
GPIO
I/O
VCC3_3
General I/O 6
Leave open
17
GND
-
-
Ground
Must be connected to
GND
18
LED_0
O
VCC3_3
LED Indicator (WLAN Act)
(IO = 8 Ma maximum)
Leave open
19
E_REFCK
I
VCC3_3
Ethernet Reference Clock
(50 MHz maximum)
Leave open
20
LED_1
O
VCC3_3
LED Indicator (TBD)
(IO = 8 Ma maximum)
Leave open
21
GND
-
-
Ground
Must be connected to
GND
22
LED_2
O
VCC3_3
LED Indicator (TBD)
(IO = 8 Ma maximum)
Leave open
23
E_TXD0
O
VCC3_3
Ethernet Data Output 0
Leave open
24
STAT_0
O
VCC3_3
Status High while system in reset,
bootloader, or OS boot;
Low when OS is up
Leave open
25
E_TXD1
O
VCC3_3
Ethernet Data Output 1
Leave open
