BTM420 Datasheet, PDF (7/21 Pages) Laird Tech Smart Technology – Changes and Revisions

BTM420/421
Bluetooth^® Data Module Hardware Integration Guide
Pin Signal
25 Unused
26 Unused
27 Unused
28 GND
29 ANT (BTM420)
30 GND
31 Unused
32 Unused
33 Unused
34 Unused
35 Unused
36 Unused
37 Unused
38 Unused
39 Unused
40 Unused
41 GNd
42 GPIO1 / UART_RI
43 Unused
44 Unused
45 GND
46 D-
47 D+
48 Unused
49 Unused
50 Unused
Description
Antenna connection (50 ohm matched)
I/O for hose
USB D-
USB D+
Voltage Specification
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
See note 3
VIO
VUSB
VUSB
Unused pins may have internal connections and must not be connected.
Reset input is active low. Input is pulled up to VDD_IN via 22k. Minimum reset pulse width is 5 ms.
Pins 25-37 should be left not connected on modules with integrated antennae (BTM411, BTM421 and
BTM431)
Embedded Wireless Solutions Support
7
Center: http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
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