Datasheet
Table Of Contents
- 1. General Description
- 2. Electrical Characteristics
- 3. SX1272/73 Features
- 4. SX1272/73 Digital Electronics
- 4.1. The LoRaTM Modem
- 4.2. FSK/OOK Modem
- 4.2.1. Bit Rate Setting
- 4.2.2. FSK/OOK Transmission
- 4.2.3. FSK/OOK Reception
- 4.2.4. Operating Modes in FSK/OOK Mode
- 4.2.5. General Overview
- 4.2.6. Startup Times
- 4.2.7. Receiver Startup Options
- 4.2.8. Receiver Restart Methods
- 4.2.9. Top Level Sequencer
- 4.2.10. Data Processing in FSK/OOK Mode
- 4.2.11. FIFO
- 4.2.12. Digital IO Pins Mapping
- 4.2.13. Continuous Mode
- 4.2.14. Packet Mode
- 4.2.15. io-homecontrol® Compatibility Mode
- 4.3. SPI Interface
- 5. SX1272/73 Analog & RF Frontend Electronics
- 6. Description of the Registers
- 7. Application Information
- 8. Packaging Information
- 9. Revision History
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Section Page
Table of contents
SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
7.1. Crystal Resonator Specification................................................................................................................... 114
7.2. Reset of the Chip ......................................................................................................................................... 114
7.2.1. POR......................................................................................................................................................... 114
7.2.2. Manual Reset ..........................................................................................................................................115
7.3. Top Sequencer: Listen Mode Examples ...................................................................................................... 115
7.3.1. Wake on Preamble Interrupt ................................................................................................................... 115
7.3.1.1. Timing Diagram............................................................................................................................... 116
7.3.1.2. Sequencer Configuration ................................................................................................................117
7.3.2. Wake on SyncAddress Interrupt ..............................................................................................................118
7.3.2.1. Timing Diagram............................................................................................................................... 118
7.3.2.2. Sequencer Configuration ................................................................................................................ 119
7.4. Top Sequencer: Beacon Mode ....................................................................................................................121
7.4.1. Timing diagram........................................................................................................................................ 121
7.4.2. Sequencer Configuration......................................................................................................................... 121
7.5. Example CRC Calculation ...........................................................................................................................123
7.6. Example Temperature Reading ...................................................................................................................124
8. Packaging Information ......................................................................................................................................... 125
8.1. Package Outline Drawing ............................................................................................................................ 125
8.2. Recommended Land Pattern ....................................................................................................................... 126
8.3. Tape and Reel Information ..........................................................................................................................127
9. Revision History................................................................................................................................................... 128