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BTM420/421
®
Bluetooth
Data Module
Pin
Signal
41
GNd
42
GPIO1 / UART_RI
43
Unused
44
Unused
45
GND
46
D-
47
D+
48
Unused
49
Unused
50
Unused
Unused pins may have internal connections and must not be connected.
1.
Reset input is active low. Input is pulled up to VDD_IN via 22k. Minimum reset pulse width is 5 ms.
2.
Pins 25-37 should be left not connected on modules with integrated antennae (BTM411, BTM421 and
3.
BTM431)
Operating Parameters
Table 4: Recommended Operating Conditions
Recommended Operating Conditions
OPERATING CONDITION
VDD_USB (USB compatibility not required)
VDD_USB (USB compatibility required)
VDD_IO
VDD_IN
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
Description
I/O for hose
USB D-
USB D+
8
Voltage Specification
VIO
VUSB
VUSB
MIN
MAX
1.7
3.6
3.1
3.6
1.7
3.3
3.0
3.3
Laird
Americas: +1-800-492-2320
Europe: +44-1628-858-940
Hong Kong: +852 2923 0610
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