CC2520_11 Datasheet, PDF (2/133 Pages) Texas Instruments – 2.4 GHZ IEEE 802.15.4/ZIGBEE RF TRANSCEIVER

CC2520 DATASHEET
2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER
SWRS068 – DECEMBER 2007
TABLE OF CONTENTS
1 Abbreviations ............................................................................................................................... 5
2 References................................................................................................................................... 7
3 Features....................................................................................................................................... 8
4 Absolute Maximum Ratings ....................................................................................................... 10
5 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
6 Crystal Specific Parameters....................................................................................................... 22
6.1
Crystal Requirements..................................................................................................... 22
6.2
On-chip Crystal Frequency Tuning................................................................................. 22
7 Pinout......................................................................................................................................... 23
8 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
9 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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