BTM442 datasheet(6/28 Pages) LSTD

Part #	BTM442

Description	modules from Laird Technologies have been designed to meet the needs of developers

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Manufacturer	LSTD [Laird Tech Smart Technology]

Direct Link	http://www.lairdtech.com/

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BTM44x

Datasheet

Embedded Wireless Solutions Support Center:

http://ews-support.lairdtech.com

www.lairdtech.com/wireless

6

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

2 HARDWARE SPECIFICATIONS

Pin Definitions

Table 1: Pin definitions

Signal

Description

Voltage Specification

1

Unused

2

GND

3

UART_CTS

Clear to Send I/P

VUSB

4

UART_RXD

Receive data I/P

VUSB

5

UART_RTS

Request to Send O/P

VUSB

6

UART_TXD

Transmit data O/P

VUSB

7

GND

8

SPI_CSB

SPI bus chip select I/P

VIO

9

SPI_MISO

SPI bus serial O/P

VIO

10

SPI_MOSI

SPI bus serial I/P

VIO

11

SPI_CLK

SPI bus clock I/P

VIO

12

VDD_USB

USB & UART supply voltage

13

VDD_IO

I/O supply voltage

14

VDD_IN

Main supply voltage

15

GND

16

PCM_IN

PCM Data I/P

VIO

17

PCM_SYNC

PCM sync I/P

VIO

18

PCM_CLK

PCM clock I/P

VIO

19

PCM_OUT

PCM Data O/P

VIO

20

RESET

Module reset I/P

See note 2

21

GPIO4

I/O for host- BT_Active BT_State

VIO

22

GPIO2 / UART_DCD

I/O for host

VIO

23

GND

24

Unused

25

Unused

See note 3

26

Unused

See note 3

27

Unused

See note 3

28

GND

See note 3

29

ANT (BTM440 / 442 only)

Antenna connection (50 ohm

matched)

See note 3

30

GND

See note 3

31

Unused

See note 3

32

Unused

See note 3

33

Unused

See note 3

34

Unused

See note 3

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