BTM410/411

Embedded Wireless Solutions

Support Center:

http://ews-support.lairdtech.com

www.lairdtech.com/bluetooth

8

Laird Technologies

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Europe: +44-1628-858-940

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Pin #

Signal

Description

Voltage Specification

39

Unused

40

Unused

41

GND

42

GPIO1 / UART_RI

I/O for host

VIO

43

GPIO7 / UART_ DTR

I/O for host

VIO

44

GPIO8 / UART_DSR

I/O for host

VIO

45

GND

46

D-

Not used for AT module variants

VUSB

47

D+

Not used for AT module variants

VUSB

48

GPIO6

I/O for host - RF_Active

VIO

49

GPIO5

I/O for host - WLAN_Active

VIO

50

GPIO3

I/O for host - BT_Priority

VIO

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

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

2.3 Operating Parameters

Table 2-3: Operating parameters

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

2.4 Voltage Specifications

Table 2-4: Voltage specifications (VUSB)

Min

Typ

Max

Input Voltage Levels

Vih

0.7VDD_USB

Vil 2.7<VDD_USB<3.0

1.7<VDD_USB<1.9

-0.4

-0.4

+0.8

-0.4

Output Voltage Levels (1.7<VDD_USB<1.9)

Voh (Iout = -4mA)

VDD_USB – 0.4

Vol (Iout = 4mA)

0.4

Output Voltage Levels (2.7<VDD_USB<3.0)

Voh (Iout = -4mA)

VDD_USB – 0.2

Vol (Iout = 4mA)

0.2

Note: VDD_USB must be connected to power the USB and UART interfaces.