BT900-Sx Hardware Integration Guide
Intelligent BTv4.0 Dual Mode Module
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
9
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
Figure 2: BT900-Sx module pin-out (top view)
3.2
Pin Definitions
Table 2: Pin definitions
Pin
#
Pin
Name
Default
Funct.
Alternate
Funct.
Default
Direction
Supply
Domain
Internal Pull-
up or Pull-
down State
Notes
Comment
1
UART_CTS
UART
SIO_3
or WKUP4 or
Ext Interrupt
IN
VCC
Pull-up
1, 2, 6,
7, 12
2
SIO_4
DIO
IN
VCC
Pull-up
2
Laird Devkit:
UART_DTR
via CON12
3
nAutoRUN
SIO_22 or Ext
Interrupt
IN
VCC
Pull-up
In
ONLY
1, 2, 12
Laird Devkit:
UART_DSR
via CON12
4
SIO_5
DIO
Ext Interrupt
IN
VCC
Pull Up
1, 2, 12
Laird Devkit:
UART_DCD
via CON12
5
VCC
IN
1.75V-3.6V
16
6
GND
7
SIO_6
DIO
SPI MISO
IN
VCC
Pull Up
1, 2, 6,
9
SPIOPEN() in
smart
BASIC