BTM430/431

Embedded Wireless Solutions Support

Center: http://ews-support.lairdtech.com

www.lairdtech.com/bluetooth

8

Laird Technologies

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Pin

Signal

Description

Voltage Specification

39

Unused

40

Unused

41

GND

42

GPIO1/ UART_RI

I/O for host

VIO

43

GPIO7

UART_DTR

VIO

44

GPIO8

UART_DSR

VIO

45

GND

46

D-

Not used for AT module variants

VUSB

47

D+

Not used for AT module variants

VUSB

48

GPIO6

RF_ACTIVE

VIO

49

GPIO5

WLAN_ACTIVE

VIO

50

GPIO3

BT_PRIORITY

VIO

Note: 1. Unused pins may have internal connections and must not be connected.

2. Reset input is active low. Input is pulled up to VDD_IN via 22k. Minimum reset pulse width is 5 ms.

3. Pins 8 – 11 (SPI related) are only for Laird internal production purposes.

4. Pins 25-37 should be left not connected on modules with integrated antenna

2.3

Operating Parameters

Table 3: Operating Parameters

Recommended Operating Conditions

OPERATING CONDITION

MIN

MAX

VDD_USB

(USB compatibility not required)

1.7

3.6

VDD_USB

(USB compatibility required)

3.1

3.6

VDD_IO

1.7

3.3

VDD_IN

3.0

3.3