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SX1230
ADVANCED COMMUNICATIONS & SENSING
Table of contents
Section
DATASHEET
Page
1.
General Description ................................................................................................................................................. 4
1.1.
1.2.
Simplified Block Diagram ................................................................................................................................. 4
Pin Diagram ..................................................................................................................................................... 5
1.3. Pin Description.................................................................................................................................................6
2.
Electrical Characteristics ......................................................................................................................................... 7
2.1.
2.2.
2.3.
ESD Notice ...................................................................................................................................................... 7
Absolute Maximum Ratings ............................................................................................................................. 7
Operating Range.............................................................................................................................................. 7
2.4. Electrical Specifications...................................................................................................................................8
3.
4.
Timing Characteristics ............................................................................................................................................. 9
Working Modes of the SX1230 .............................................................................................................................. 10
4.1.
4.2.
Operating Modes ........................................................................................................................................... 10
Application Modes.......................................................................................................................................... 10
4.2.1.
4.2.2.
Stand Alone Mode .................................................................................................................................. 10
MCU Mode.............................................................................................................................................. 11
5.
Operation of the SX1230 ....................................................................................................................................... 12
5.1.
Main Parameters............................................................................................................................................ 12
5.1.1.
5.1.2.
5.1.3.
Center Frequency ................................................................................................................................... 12
Frequency Deviation ............................................................................................................................... 12
Bit Rate ................................................................................................................................................... 12
5.2.
5.3.
Synthesizer .................................................................................................................................................... 13
The Power Amplifier....................................................................................................................................... 14
6.
Digital Control and Interface .................................................................................................................................. 15
6.1.
Stand Alone Mode ......................................................................................................................................... 15
6.1.1.
6.1.2.
6.1.3.
6.1.4.
6.1.5.
State Machine Description ...................................................................................................................... 15
Memory Organization of the E2PROM ................................................................................................... 15
Periodic mode ......................................................................................................................................... 17
Low Battery Indicator: Stand Alone Mode............................................................................................... 18
Low Battery Indicator: MCU Mode .......................................................................................................... 18
6.2.
MCU Mode..................................................................................................................................................... 18
6.2.1.
SPI Operation ......................................................................................................................................... 18
6.2.2. Data and Data Clock Usage...................................................................................................................20
6.3. SX1230 Register Description........................................................................................................................21
7. SX1230 Application Circuits .................................................................................................................................. 27
7.1.
7.2.
7.3.
SX1230 E2PROM Mode Application Circuit .................................................................................................. 27
SX1230 MCU Mode Application Circuit ......................................................................................................... 28
Complete RKE Application Circuit ................................................................................................................. 28
SX1230, Revision 2 May 2009
?2008 Semtech Corp.
Page 2
www.semtech.com
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