NRF24L01G NORDIC SEMICONDUCTOR, NRF24L01G Datasheet - Page 41

• 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
7.9.2
Figure 16.
packet is transmitted, the PTX enters RX mode to receive the ACK packet. After the first transmission, the
PTX waits a specified time for the ACK packet, if it is not in the specific time slot the PTX retransmits the
packet as shown in
When an address is detected the PTX stays in RX mode until the packet is received. When the retransmit-
ted packet is received by the PRX (see
back to the PTX. When the ACK is received by the PTX, the TX_DS IRQ is asserted.
7.9.3
Figure 17.
ing interrupts are also indicated.
Revision 2.0
Figure 16. TX/RX cycles with ACK and the according interrupts when the first packet transmit fails
Figure 17. TX/RX cycles with ACK and the according interrupts when the ACK packet fails
is a scenario where a retransmission is needed due to loss of the first packet transmit. After the
is a scenario where a retransmission is needed after a loss of the ACK packet. The correspond-
Single transaction with a lost packet
Single transaction with a lost ACK packet
PRX
MCU PRX
PRX
MCU PRX
MCU PTX
PTX
MCU PTX
PTX
1 Radio Turn Around Delay
1 Radio Turn Around Delay
Figure 16.
Packet PID=1 lost
during transmission
UL
UL
Packet received.
IRQ: RX DR (PID=1)
RX
TX:PID=1
TX:PID=1
No address detected.
RX off to save current
No address detected.
RX off to save current
Figure
130us
130us
DL
Page 41 of 74
16.), the RX_DR IRQ is asserted and an ACK is transmitted
1
1
RX
RX
ARD
ARD
ACK:PID=1
RX
Auto retransmit delay
elapsed
Auto retransmit delay
elapsed
ACK PID=1 lost
during transmission
130us
130us
1
1
Packet received.
IRQ: RX DR (PID=1)
Retransmit of packet
PID=1
Retransmit of packet
PID=1
Packet detected as
copy of previous,
discarded
TX:PID=1
TX:PID=1
RX
130us
130us
DL
ACK received
IRQ: TX DS (PID=1)
ACK received
IRQ: TX DS (PID=1)
1
1
ACK:PID=1
ACK:PID=1
RX
RX
IRQ
IRQ