CC2480
Table Of Contents
APPLICATIONS..............................................................................................................................................1
DESCRIPTION ................................................................................................................................................ 1
KEY FEATURES.............................................................................................................................................1
TABLE OF CONTENTS.................................................................................................................................2
1 ABBREVIATIONS................................................................................................................................4
2 REFERENCES......................................................................................................................................5
3 ABSOLUTE MAXIMUM RATINGS..................................................................................................6
4 OPERATING CONDITIONS...............................................................................................................6
5 ELECTRICAL SPECIFICATIONS ....................................................................................................7
5.1 GENERAL CHARACTERISTICS ................................................................................................................8
5.2 RF RECEIVE SECTION ...........................................................................................................................9
5.3 RF TRANSMIT SECTION.........................................................................................................................9
5.4 32 MHZ CRYSTAL OSCILLATOR..........................................................................................................10
5.5 32.768 KHZ CRYSTAL OSCILLATOR....................................................................................................10
5.6 32 KHZ RC OSCILLATOR.....................................................................................................................11
5.7 16 MHZ RC OSCILLATOR ...................................................................................................................11
5.8 FREQUENCY SYNTHESIZER CHARACTERISTICS ................................................................................... 12
5.9 ANALOG TEMPERATURE SENSOR........................................................................................................ 12
5.10 ADC ...................................................................................................................................................12
5.11 CONTROL AC CHARACTERISTICS........................................................................................................14
5.12 SPI AC CHARACTERISTICS .................................................................................................................15
5.13 PORT OUTPUTS AC CHARACTERISTICS...............................................................................................15
5.14 DC CHARACTERISTICS........................................................................................................................ 15
6 PIN AND I/O PORT CONFIGURATION ........................................................................................17
7 CIRCUIT DESCRIPTION .................................................................................................................19
8 APPLICATION CIRCUIT .................................................................................................................20
8.1 INPUT / OUTPUT MATCHING.................................................................................................................20
8.2 BIAS RESISTORS ..................................................................................................................................20
8.3 CRYSTAL.............................................................................................................................................20
8.4 VOLTAGE REGULATORS ......................................................................................................................20
8.5 POWER SUPPLY DECOUPLING AND FILTERING......................................................................................21
9 PERIPHERALS...................................................................................................................................23
9.1 RESET .................................................................................................................................................23
9.2 I/O PORTS............................................................................................................................................ 23
9.3 ADC ...................................................................................................................................................25
9.4 RANDOM NUMBER GENERATOR .........................................................................................................27
9.5 USART............................................................................................................................................... 28
10 RADIO..................................................................................................................................................29
10.1 IEEE 802.15.4 MODULATION FORMAT............................................................................................... 30
10.2 DEMODULATOR, SYMBOL SYNCHRONIZER AND DATA DECISION ....................................................... 31
10.3 FRAME FORMAT..................................................................................................................................31
10.4 SYNCHRONIZATION HEADER ...............................................................................................................32
10.5 MAC PROTOCOL DATA UNIT ...............................................................................................................32
10.6 FRAME CHECK SEQUENCE ...................................................................................................................32
10.7 LINEAR IF AND AGC SETTINGS ..........................................................................................................33
10.8 CLEAR CHANNEL ASSESSMENT........................................................................................................... 33
10.9 VCO AND PLL SELF-CALIBRATION....................................................................................................33
10.10 INPUT / OUTPUT MATCHING................................................................................................................33
10.11 SYSTEM CONSIDERATIONS AND GUIDELINES......................................................................................34
10.12 PCB LAYOUT RECOMMENDATION ......................................................................................................35
10.13 ANTENNA CONSIDERATIONS...............................................................................................................35
CC2480 Data Sheet SWRS074A Page 2 of 43