EM2420-STR Ember, EM2420-STR Datasheet - Page 2

• Manufacturer Part Number: EM2420-STR
• Description: IC RF TXRX ZIGBEE 2.4GHZ 48-QLP
• Manufacturer: Ember

Specifications of EM2420-STR

• Mfg Application Notes: EM2420
• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: ZigBee™
• Power - Output: -3dBm
• Sensitivity: -94dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 19.7mA
• Current - Transmitting: 17.4mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QLP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Memory Size: -

Contents
Abbreviations_____________________________________________________________________4
References _______________________________________________________________________5
Features _________________________________________________________________________6
Absolute Maximum Ratings _________________________________________________________7
Operating Conditions ______________________________________________________________7
Electrical Specifications ____________________________________________________________8
Pin Assignment __________________________________________________________________13
Circuit Description _______________________________________________________________15
Application Circuit _______________________________________________________________17
IEEE 802.15.4 Modulation Format __________________________________________________21
Configuration Overview ___________________________________________________________22
4-wire Serial Configuration and Data Interface________________________________________23
Microcontroller Interface and Pin Description ________________________________________28
Demodulator, Symbol Synchronizer and Data Decision _________________________________31
Frame Format ___________________________________________________________________32
RF Data Buffering ________________________________________________________________35
Address Recognition ______________________________________________________________37
Acknowledge Frames _____________________________________________________________38
Radio control state machine ________________________________________________________40
MAC Security Operations (Encryption and Authentication) _____________________________42
Ember Part Number: 120-0049-000D
Input / output matching ___________________________________________________________17
Bias resistor ____________________________________________________________________17
Crystal ________________________________________________________________________17
Voltage regulator________________________________________________________________17
Power supply decoupling and filtering _______________________________________________17
Register access _________________________________________________________________23
Status byte _____________________________________________________________________24
Command strobes _______________________________________________________________25
RAM access____________________________________________________________________25
FIFO access ____________________________________________________________________27
Multiple SPI access ______________________________________________________________27
Configuration interface ___________________________________________________________28
Receive mode __________________________________________________________________29
RXFIFO overflow _______________________________________________________________29
Transmit mode__________________________________________________________________31
General control and status pins _____________________________________________________31
Synchronization header ___________________________________________________________32
Length field ____________________________________________________________________33
MAC protocol data unit___________________________________________________________34
Frame check sequence____________________________________________________________34
Buffered transmit mode___________________________________________________________35
Buffered receive mode ___________________________________________________________36
Un-buffered, serial mode__________________________________________________________36
Keys__________________________________________________________________________42
Nonce / counter _________________________________________________________________42
Stand-alone encryption ___________________________________________________________43
EM2420 Datasheet
EM2420
Page 2 of 84