NRF24L01G NORDIC SEMICONDUCTOR, NRF24L01G Datasheet - Page 25

• 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

nRF24L01 Product Specification
7.3
The format of the Enhanced ShockBurst™ packet is described in this chapter. The Enhanched Shock-
Burst™ packet contains a preamble field, address field, packet control field, payload field and a CRC field.
Figure 4. on page 25
7.3.1
The preamble is a bit sequence used to detect 0 and 1 levels in the receiver. The preamble is one byte
long and is either 01010101 or 10101010. If the first bit in the address is 1 the preamble is automatically
set to 10101010 and if the first bit is 0 the preamble is automatically set to 01010101. This is done to
ensure there are enough transitions in the preamble to stabilize the receiver.
7.3.2
This is the address for the receiver. An address ensures that the correct packet are detected by the
receiver. The address field can be configured to be 3, 4 or, 5 bytes long with the AW register.
7.3.3
Figure 5 shows the format of the 9 bit packet control field, MSB to the left.
The packet control field contains a 6 bit payload length field, a 2 bit PID (Packet Identity) field and, a 1 bit
NO_ACK flag.
7.3.3.1
Revision 2.0
This 6 bit field specifies the length of the payload in bytes. The length of the payload can be from 0 to 32
bytes.
P re a m b le 1 b y te
Note: Addresses where the level shifts only one time (that is, 000FFFFFFF) can often be detected in
Preamble
Address
Packet Control Field
Enhanced Shockburst
noise and can give a false detection, which may give a raised Packet-Error-Rate. Addresses
as a continuation of the preamble (hi-low toggling) raises the Packet-Error-Rate.
Payload length
A d d re s s 3 -5 b y te
Figure 4. An Enhanced ShockBurst™ packet with payload (0-32 bytes)
shows the packet format with MSB to the left.
Payload length 6bit
P a c k e t C o n tro l F ie ld
Figure 5. Packet control field
™
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packet format
9 b it
PID 2bit
P a y lo a d 0 - 3 2 b y te
NO_ACK 1bit
C R C 1 -2
b y te