CC2520 datasheet(2/133 Pages) TI

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CC2520 DATASHEET

2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER

SWRS068 – DECEMBER 2007

WWW.TI.COM

TABLE OF CONTENTS

Abbreviations ............................................................................................................................... 5

References................................................................................................................................... 7

Features....................................................................................................................................... 8

Absolute Maximum Ratings ....................................................................................................... 10

Electrical Characteristics............................................................................................................ 11

5.1

Recommended Operating Conditions ............................................................................ 11

5.2

DC Characteristics ......................................................................................................... 11

5.3

Wake-Up and Timing ..................................................................................................... 11

5.4

Current Consumptions ................................................................................................... 11

5.5

Receive Parameters....................................................................................................... 12

5.6

Frequency Synthesizer Parameters ............................................................................... 12

5.6.1

Transmit Parameters.................................................................................................. 12

5.7

RSSI/CCA Parameters................................................................................................... 13

5.8

FREQEST Parameters................................................................................................... 13

5.9

Typical Performance Curves .......................................................................................... 14

5.10

Low-Current Mode RX.................................................................................................... 19

5.10.1

Low-Current RX Mode Parameters ............................................................................ 19

5.11

Optional Temperature Compensation of TX................................................................... 20

5.11.1

Using the Temperature Sensor .................................................................................. 21

Crystal Specific Parameters....................................................................................................... 22

6.1

Crystal Requirements..................................................................................................... 22

6.2

On-chip Crystal Frequency Tuning................................................................................. 22

Pinout......................................................................................................................................... 23

Functional Introduction............................................................................................................... 25

8.1

Integrated 2.4 GHz IEEE 802.15.4 Compliant Radio ..................................................... 25

8.2

Comparison to CC2420.................................................................................................. 25

8.3

Block Diagram................................................................................................................ 26

Application Circuit ...................................................................................................................... 29

9.1

Input / Output Matching.................................................................................................. 29

9.2

Bias Resistor ..................................................................................................................30

9.3

Crystal ............................................................................................................................ 30

9.4

Digital Voltage Regulator................................................................................................ 30

9.5

Power Supply Decoupling and Filtering ......................................................................... 30

9.6

Board Layout Guidelines................................................................................................ 30

9.7

Antenna Considerations................................................................................................. 31

9.8

Choosing the Most Suitable Interconnection with a Microcontroller............................... 31

9.9

Interfacing CC2520 and MSP430F2618 ........................................................................ 31

10 Serial Peripheral Interface (SPI) ................................................................................................ 33

10.1

CSn ................................................................................................................................ 33

10.2

SCLK.............................................................................................................................. 33

10.3

SI.................................................................................................................................... 33

10.4

SO .................................................................................................................................. 34

10.5

SPI Timing Requirements .............................................................................................. 34

11 GPIO .......................................................................................................................................... 35

11.1

Reset Configuration of GPIO Pins.................................................................................. 35

11.2

GPIO as Input ................................................................................................................ 35

11.3

GPIO as Output.............................................................................................................. 36

11.4

Switching Direction on GPIO.......................................................................................... 36

11.5

GPIO Configuration........................................................................................................ 36

12 Power Modes ............................................................................................................................. 40

12.1

Switching Between Power Modes .................................................................................. 40

12.2

Power Up Sequence Using RESETn (recommended)................................................... 41

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