NRF24L01G NORDIC SEMICONDUCTOR, NRF24L01G Datasheet - Page 38

• Manufacturer Part Number: NRF24L01G
• Description: IC, RF TRANSCEIVER, 2.4-2.4835GHZ QFN-20
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF24L01G

• Transmitting Current: 11.3mA
• Data Rate: 2Mbps
• Frequency Range: 2.4GHz To 2.4835GHz
• Modulation Type: GFSK
• Sensitivity Dbm: -82dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 20
• Sensitivity (dbm): -82dBm
• Supply Voltage Range: 1.9V To 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.8
This section describes the timing sequence of Enhanced ShockBurst™ and how all modes are initiated
and operated. The Enhanced ShockBurst™ timing is controlled through the Data and Control interface.
The nRF24L01 can be set to static modes or autonomous modes where the internal state machine con-
trols the events. Each autonomous mode/sequence is ended with an interrupt at the IRQ pin. All the inter-
rupts are indicated as IRQ events in the timing diagrams.
The following equations calculate various timing measurements:
Revision 2.0
Symbol
T
T
T
T
ACK
ESB
OA
UL
Enhanced ShockBurst
Time Enhanced Shock-
Time on-air Ack
Burst™ cycle
Description
Time Upload
Time on-air
PTX MODE
PTX IRQ
PTX CE
PTX SPI
1 IRQ if No Ack is on.
T
IRQ
= 8.2ηs @ 1Mbps, T
Figure 13. Transmitting one packet with NO_ACK on
Standby 1
T
UL
UL
T
T
T
T
ACK
U L
OA
ESB
=
=
IRQ
=
Table 15. Timing equations
packet
air
TM
packet
payload
= 6.0ηs @ 2Mbps
air
=
SPI
data
PLL Lock
T
data
Page 38 of 74
UL
data
length
timing
length
>10us
rate
130us
rate
+
length
rate
2
=
=
8
⋅
8
⎡
⎢ ⎣
T
⎡
⎢ ⎣
bit
bit
=
stby
byte
byte
8
SPI
⎡
⎢ ⎣
2
bit
a
⎤
⎥ ⎦
⎤
⎥ ⎦
⋅
⋅
nRF24L01 Product Specification
⎛
⎜
⎝
data
+
byte
⎛
⎜
⎝
1
1
preamble
[
preamble
[
T
byte
byte
T
TX
OA
ACK
⎤
⎥ ⎦
rate
⋅
]
]
Equation
+
+
N
3
3
payload
[
4 ,
4 ,
[ ]
bytes
+
bit
or
or
T
address
address
5
s
5
IRQ
air
[
air
[
bytes
]
bytes
data
data
Standby-I
]
]
TX DS
+
+
IRQ:
rate
rate
N
N
T
[
payload
payload
[
IRQ
bytes
bytes
1
[ ]
[ ]
bit
bit
s
s
]
]
+
+
1
1
or
or
2
2
CRC
CRC
[
[
bytes
bytes
]
]
⎞
⎟
⎠
⎞
⎟
⎠
+
+
packet
packet
9
9
control
control
[ ]
[ ]
bit
bit
field
field