Download BTM404 Long Range Bluetooth Serial Module

BTM404
User’s Manual
CONTENTS
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2
Revision History ..................................................................................................................................... 2
General Description .............................................................................................................................. 5
2.1 Applications ................................................................................................................................... 5
3 Features.................................................................................................................................................. 6
4 Functional Block Diagram..................................................................................................................... 9
4.1 Interconnection .............................................................................................................................. 9
4.2 Pin Descriptions ............................................................................................................................ 10
4.3 Electrical Specifications ................................................................................................................. 11
4.3.1 Absolute Maximum Ratings............................................................................................. 11
4.3.2 Recommended Operating Parameters ............................................................................. 11
5 I/O Characteristics ................................................................................................................................ 13
5.1 Power Consumption..................................................................................................................... 13
5.1.1 Typical Current Consumption in mA................................................................................ 13
6 RF Performance ................................................................................................................................... 13
6.1 Transmit Power ............................................................................................................................ 13
6.2 Receive Sensitivity......................................................................................................................... 13
7 Functional Description ........................................................................................................................ 14
7.1 Interface ....................................................................................................................................... 14
7.1.1 UART Interface ................................................................................................................ 14
7.1.2 SPI Bus ............................................................................................................................ 15
7.1.3 GPIO Port ........................................................................................................................ 15
7.1.4 PCM CODEC Interface .................................................................................................... 15
7.1.5 ADC ................................................................................................................................ 16
8 Integrated Firmware ........................................................................................................................... 17
8.1 General ........................................................................................................................................ 17
8.2 Profiles ......................................................................................................................................... 17
8.2.1 AT Features at a Glance .................................................................................................. 18
8.3 Multipoint Firmware ..................................................................................................................... 19
8.4 OTA (Over The Air) Configuration ................................................................................................ 20
8.5 Boot Modes ................................................................................................................................. 20
9 Low Power Modes ............................................................................................................................... 21
9.1 Low Power Modes using Sniff ...................................................................................................... 22
10 Application Examples .......................................................................................................................... 23
10.1 RS232 Modem Signals ................................................................................................................. 23
10.2 Modem Signalling over Bluetooth ................................................................................................ 24
10.3 Pure Cable Replacement Mode .................................................................................................... 24
10.4 Audio Cable (voice) ...................................................................................................................... 25
10.5 Oscillator Output .......................................................................................................................... 26
11 Application Information ..................................................................................................................... 27
11.1 Antenna Position .......................................................................................................................... 27
11.2 Power Supply Considerations ....................................................................................................... 28
11.3 Power-On-Reset (Power Cycling and Brown Out Considerations) ................................................. 28
11.4 RF Shield ...................................................................................................................................... 28
11.5 Mounting the Module into the Application Platform .................................................................... 28
11.5.1 Fixing Pillars..................................................................................................................... 28
12 Board to Board Connector.................................................................................................................. 30
12.1 Stacking Height ............................................................................................................................ 30
12.2 Hirose Connector General Specification........................................................................................ 30
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LWS-UM-BTM404-0713