nRF24LU1+ OTP
Single Chip 2.4 GHz Transceiver with USB
Microcontroller and OTP Memory
Product Specification v1.0
Key Features
•
•
•
•
•
nRF24L01+ compatible RF transceiver
Worldwide 2.4 GHz ISM band operation
Up to 2 Mbps on air data rate
Enhanced ShockBurst™ hardware link layer
Air compatible with nRF24LU1, nRF24LU1+,
nRF24LE1 OTP, nRF24LE1, nRF24L01+,
nRF24L01, nRF2401A, nRF2402, nRF24E1
and nRF24E2
Low cost external ± 60 ppm 16 MHz crystal
Full speed USB 2.0 compliant device controller
Up to 12 Mbps USB transfer rate
2 control, 10 bulk/interrupt and 2 ISO endpoints
Dedicated 512 bytes endpoint buffer RAM
Software controlled pull-up resistor for D+
PLL for full-speed USB operation
Voltage regulator, 4.0 to 5.25V supply range
Enhanced 8-bit 8051 compatible
microcontroller
Drop-in compatibility with nRF24LU1 and
nRF24LU1+ except for programming
Reduced instruction cycle time
32-bit multiplication-division unit
16 + 1 kbytes of on-chip OTP memory
2 kbytes of on-chip SRAM
6 general purpose digital input/output pins
Hardware SPI slave and master, UART
3 16-bit timers/counters
AES encryption/decryption co-processor
Compact 32-pin 5x5mm QFN package
Applications
•
•
•
•
•
•
Compact USB dongles for wireless
peripherals
USB dongles for mouse, keyboards and
remotes
USB dongle 3-in-1 desktop bundles
USB dongle for advanced media center
remote controls
USB dongle for game controllers
Toys
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
All rights reserved.
Reproduction in whole or in part is prohibited without the prior written permission of the copyright holder.
October 2009
nRF24LU1+ OTP Product Specification
Liability disclaimer
Nordic Semiconductor ASA reserves the right to make changes without further notice to the product to
improve reliability, function or design. Nordic Semiconductor ASA does not assume any liability arising out
of the application or use of any product or circuits described herein.
All application information is advisory and does not form part of the specification.
Limiting values
Stress above one or more of the limiting values may cause permanent damage to the device. These are
stress ratings only and operation of the device at these or at any other conditions above those given in the
specifications are not implied. Exposure to limiting values for extended periods may affect device reliability.
Life support applications
These products are not designed for use in life support appliances, devices, or systems where malfunction
of these products can reasonably be expected to result in personal injury. Nordic Semiconductor ASA cus-
tomers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Nordic Semiconductor ASA for any damages resulting from such improper use or sale.
Data sheet status
Objective product specification
This product specification contains target specifications for product
development.
Preliminary product specification This product specification contains preliminary data; supplementary
data may be published from Nordic Semiconductor ASA later.
Product specification
This product specification contains final product specifications. Nordic
Semiconductor ASA reserves the right to make changes at any time
without notice in order to improve design and supply the best possible
product.
Contact details
For your nearest dealer, please see
www.nordicsemi.no
Main office:
Otto Nielsens veg 12
7004 Trondheim
Phone: +47 72 89 89 00
Fax: +47 72 89 89 89
www.nordicsemi.no
Revision 1.0
Page 2 of 178
nRF24LU1+ OTP Product Specification
Revision History
Date
October 2009
Version
1.0
Description
Product specification
RoHS statement
nRF24LU1+ OTP where explicitly stated in this product specification meets the requirements of Directive
2002/95/EC of the European Parliament and of the Council on the Restriction of Hazardous Substances
(RoHS). Complete hazardous substance reports as well as material composition reports for all active
Nordic products can be found on our web site
www.nordicsemi.com.
Revision 1.0
Page 3 of 178
nRF24LU1+ OTP Product Specification
Contents
1
Introduction .............................................................................................. 11
1.1
Prerequisites ....................................................................................... 11
1.2
Writing conventions ............................................................................. 11
1.3
Features .............................................................................................. 12
1.4
Block diagram ..................................................................................... 13
1.5
Typical system usage .......................................................................... 14
2
Pin Information ......................................................................................... 15
2.1
Pin Assignments ................................................................................. 15
2.2
Pin Functions ...................................................................................... 16
2.2.1
Power supply pins .......................................................................... 16
2.2.2
PROG/VPP pin ............................................................................... 16
3
Absolute Maximum Ratings .................................................................... 17
4
Operating Conditions .............................................................................. 18
5
Electrical Specifications .......................................................................... 19
5.1
Power consumption and timing characteristics ................................... 19
5.2
RF transceiver characteristics ............................................................ 20
5.3
USB interface ...................................................................................... 23
5.4
OTP memory ....................................................................................... 23
5.5
Crystal specifications .......................................................................... 24
5.6
DC Electrical Characteristics ............................................................... 24
6
RF Transceiver ......................................................................................... 26
6.1
Features .............................................................................................. 26
6.2
Block diagram ..................................................................................... 27
6.3
Functional description ......................................................................... 27
6.3.1
Operational Modes ......................................................................... 27
6.3.1.1
State diagram .............................................................................. 27
6.3.1.2
Power down mode ....................................................................... 28
6.3.1.3
Standby modes ........................................................................... 28
6.3.1.4
RX mode ..................................................................................... 29
6.3.1.5
TX mode ...................................................................................... 29
6.3.1.6
Operational modes configuration ................................................ 30
6.3.1.7
Timing information ....................................................................... 30
6.3.2
Air data rate .................................................................................... 31
6.3.3
RF channel frequency .................................................................... 31
6.3.4
Received Power Detector measurements ...................................... 31
6.3.5
PA control ....................................................................................... 31
6.3.6
RX/TX control ................................................................................. 32
6.4
Enhanced ShockBurst™ ..................................................................... 32
6.4.1
Features ......................................................................................... 32
6.4.2
Enhanced ShockBurst™ overview ................................................. 32
6.4.3
Enhanced Shockburst™ packet format .......................................... 33
6.4.3.1
Preamble ..................................................................................... 33
6.4.3.2
Address ....................................................................................... 33
Revision 1.0
Page 4 of 178
nRF24LU1+ OTP Product Specification
6.4.3.3
Packet Control Field (PCF) ......................................................... 34
6.4.3.4
Payload ....................................................................................... 34
6.4.3.5
CRC (Cyclic Redundancy Check) ............................................... 35
6.4.4
Automatic packet assembly ............................................................ 36
6.4.5
Automatic packet disassembly ....................................................... 37
6.4.6
Automatic packet transaction handling ........................................... 38
6.4.6.1
Auto Acknowledgement ............................................................... 38
6.4.6.2
Auto Retransmission (ART) ......................................................... 38
6.4.7
Enhanced ShockBurst™ flowcharts ............................................... 40
6.4.7.1
PTX operation ............................................................................. 40
6.4.7.2
PRX operation ............................................................................. 42
6.4.8
MultiCeiver™ .................................................................................. 43
6.4.9
Enhanced ShockBurst™ timing ...................................................... 45
6.4.10
Enhanced ShockBurst™ transaction diagram ................................ 48
6.4.10.1
Single transaction with ACK packet and interrupts ..................... 49
6.4.10.2
Single transaction with a lost packet ........................................... 49
6.4.10.3
Single transaction with a lost ACK packet ................................... 50
6.4.10.4
Single transaction with ACK payload packet ............................... 50
6.4.10.5
Single transaction with ACK payload packet and lost packet ...... 51
6.4.10.6
Two transactions with ACK payload packet and the first ACK packet lost
51
6.4.10.7
Two transactions where max retransmissions is reached ........... 52
6.4.11
Compatibility with ShockBurst™ ..................................................... 52
6.4.11.1
ShockBurst™ packet format ........................................................ 52
6.5
Data and control interface ................................................................... 53
6.5.1
SFR registers .................................................................................. 53
6.5.2
SPI operation .................................................................................. 54
6.5.2.1
SPI commands ............................................................................ 54
6.5.3
Data FIFO ....................................................................................... 55
6.5.4
Interrupt .......................................................................................... 56
6.6
Register map ....................................................................................... 57
6.6.1
Register map table ......................................................................... 57
7
USB Interface ............................................................................................ 63
7.1
Features .............................................................................................. 63
7.2
Block diagram ..................................................................................... 64
7.3
Functional description ......................................................................... 65
7.4
Control endpoints ................................................................................ 69
7.4.1
Control endpoint 0 implementation ................................................. 69
7.4.2
Endpoint 0 registers ....................................................................... 70
7.4.3
Control transfer examples .............................................................. 71
7.4.3.1
Control write transfer example .................................................... 71
7.4.3.2
Control read transfer example .................................................... 72
7.4.3.3
No-data control transfer example ............................................... 72
7.5
Bulk/Interrupt endpoints ...................................................................... 73
7.5.1
Bulk/Interrupt endpoints implementation ........................................ 73
7.5.2
Bulk/Interrupt endpoints registers .................................................. 73
Revision 1.0
Page 5 of 178
