SX1230 データシートの表示（PDF） - Semtech Corporation

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SX1230

Integrated Transmitter IC Narrow/wideband 315 MHz, 434 MHz 868 MHz and 915 MHz band Transmitter

Semtech Corporation 

SX1230

ADVANCED COMMUNICATIONS & SENSING

Table of contents

Section

DATASHEET

Page

1. General Description ................................................................................................................................................. 4

1.1. Simplified Block Diagram ................................................................................................................................. 4

1.2. Pin Diagram ..................................................................................................................................................... 5

1.3. Pin Description.................................................................................................................................................6

2. Electrical Characteristics ......................................................................................................................................... 7

2.1. ESD Notice ...................................................................................................................................................... 7

2.2. Absolute Maximum Ratings ............................................................................................................................. 7

2.3. Operating Range.............................................................................................................................................. 7

2.4. Electrical Specifications...................................................................................................................................8

3. Timing Characteristics ............................................................................................................................................. 9

4. Working Modes of the SX1230 .............................................................................................................................. 10

4.1. Operating Modes ........................................................................................................................................... 10

4.2. Application Modes.......................................................................................................................................... 10

4.2.1. Stand Alone Mode .................................................................................................................................. 10

4.2.2. MCU Mode.............................................................................................................................................. 11

5. Operation of the SX1230 ....................................................................................................................................... 12

5.1. Main Parameters............................................................................................................................................ 12

5.1.1. Center Frequency ................................................................................................................................... 12

5.1.2. Frequency Deviation ............................................................................................................................... 12

5.1.3. Bit Rate ................................................................................................................................................... 12

5.2. Synthesizer .................................................................................................................................................... 13

5.3. The Power Amplifier....................................................................................................................................... 14

6. Digital Control and Interface .................................................................................................................................. 15

6.1. Stand Alone Mode ......................................................................................................................................... 15

6.1.1. State Machine Description ...................................................................................................................... 15

6.1.2. Memory Organization of the E2PROM ................................................................................................... 15

6.1.3. Periodic mode ......................................................................................................................................... 17

6.1.4. Low Battery Indicator: Stand Alone Mode............................................................................................... 18

6.1.5. 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. SX1230 E2PROM Mode Application Circuit .................................................................................................. 27

7.2. SX1230 MCU Mode Application Circuit ......................................................................................................... 28

7.3. Complete RKE Application Circuit ................................................................................................................. 28

SX1230, Revision 2 May 2009

©2008 Semtech Corp.

Page 2

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