EM2420-STR Ember, EM2420-STR Datasheet - Page 41

• 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: -

Ember Part Number: 120-0049-000D
RX_WAIT
except Power Down (PD)
[14]
All States
All States
acknowledge request
Automatic or manual
12 symbol periods
periods later
later
12 symbol
command strobe
TX_ACK_CALIBRATE
TX_ACK_PREAMBLE
Figure 23. Radio control states
RX_SFD_SEARCH
RX_CALIBRATE
SXOSCOFF
[49, 50 and 51]
[52, 53 and 54]
found
[3, 4, 5 and 6]
SFD
SRFOFF
RX_FRAME
[16 and 40]
[2 and 40]
TX_ACK
[48]
EM2420 Datasheet
Wait for the specified crystal oscillator
XOSC16M_STABLE status bit
Wait until voltage regulator
start-up time, or poll the
Voltage Regulator Off
Power Down (PD)
has powered up
Acknowledge
completed
IDLE
[0]
[1]
VREG_EN set high
Chip Reset
(pin or register)
SXOSCON
TX_CALIBRATE
TX_PREAMBLE
[34, 35 and 36]
[37, 38 and 39]
Crystal oscillator disabled,
register access enabled,
FIFO / RAM access disabled
TX_FRAME
[32]
VREG_EN set low
8 or 12 symbol
EM2420
periods later
All RX states
Page 41 of 84
Preamble and SFD
TXFIFO Data
is transmitted
is transmitted