nRF24LE1
Ultra-low Power Wireless System On-Chip
Solution
Product Specification v1.6
Key Features
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nRF24L01+ 2.4 GHz transceiver (250 kbps,
1 Mbps and 2 Mbps air data rates)
Fast microcontroller (8051 compatible)
16 kB program memory (on-chip Flash)
1 kB data memory (on-chip RAM)
1 kB NV data memory
512 bytes NV data memory (extended endur-
ance)
AES encryption HW accelerator
16-32bit multiplication/division co-processor
(MDU)
6-12 bit ADC
High flexibility IOs
Serves a set of power modes from ultra low
power to a power efficient active mode
Several versions in various QFN packages:
4×4mm QFN24
5×5mm QFN32
7×7mm QFN48
Support for HW debugger
HW support for firmware upgrade
Applications
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Computer peripherals
Mouse
Keyboard
Remote control
Gaming
Advanced remote controls
Audio/Video
Entertainment centers
Home appliances
Goods tracking and monitoring:
Active RFID
Sensor networks
Security systems
Payment
Alarm
Access control
Health, wellness and sports
Watches
Mini computers
Sensors
Remote control toys
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All rights reserved.
Reproduction in whole or in part is prohibited without the prior written permission of the copyright holder.
August 2010
nRF24LE1 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.com
Main office:
Otto Nielsens veg 12
7004 Trondheim
Norway
Phone: +47 72 89 89 00
Fax: +47 72 89 89 89
ww.nordicsemi.no
Revision 1.6
2 of 196
nRF24LE1 Product Specification
Revision History
Date
March 2009
September 2009
Version
1.2
1.3
Description
Updated
Figure 33., Figure 34.
and
Table 35..
Added
Table 93.
Updated BOM,
Table 28., Table 29.,Table
34.,Table 46., Table 53., Table 61.,Table 87., Table 101., Table
113., Table 115.,
sections
6.3.4.1, 9.1, 9.3 13.3.3, 29.1.2,
29.2.2, 29.3.2
and
30.1.
Simplified way of writing binary num-
bers and denoting register bits.
Updated
Figure 9., Figure 10., Figure 30., Note: on page 87,
Figure 46., Figure 51.
and
Figure 52.
Updated
section 2.1, sec-
tion 12.3
,
section 13.3.1, Table 14.
,
Table 15., Table 27.,Table
58., Table 111.
,Table
114.
and
Table 115.
Updated BOM infor-
mation in
chapter 29.
Updated
6.3.5.1 on page 77, Table 57. on page 109, Table 58.
on page 111, Table 88. on page 150,
and Human Body Model
Class in
chapter 24 on page 176.
Added RoHS statement and updated
Table 88. on page 150.
April 2010
1.4
July 2010
August 2010
1.5
1.6
RoHS statement
Nordic Semiconductor’s products meet 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 1.6
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nRF24LE1 Product Specification
Contents
1
Introduction .............................................................................................. 10
1.1
Prerequisites ....................................................................................... 10
1.2
Writing conventions ............................................................................. 10
2
Product overview ..................................................................................... 11
2.1
Features .............................................................................................. 11
2.2
Block diagram ..................................................................................... 13
2.3
Pin assignments .................................................................................. 14
2.3.1
24-pin 4x4 QFN-package variant .................................................... 14
2.3.2
32-pin 5x5 QFN-package variant .................................................... 14
2.3.3
48-pin 7x7 QFN-package variant .................................................... 15
2.4
Pin functions ........................................................................................ 15
3
RF transceiver .......................................................................................... 16
3.1
Features .............................................................................................. 16
3.2
Block diagram ..................................................................................... 17
3.3
Functional description ......................................................................... 17
3.3.1
Operational Modes ......................................................................... 17
3.3.2
Air data rate .................................................................................... 21
3.3.3
RF channel frequency .................................................................... 21
3.3.4
Received Power Detector measurements ...................................... 21
3.3.5
PA control ....................................................................................... 21
3.3.6
RX/TX control ................................................................................. 22
3.4
Enhanced ShockBurst™ ..................................................................... 22
3.4.1
Features ......................................................................................... 22
3.4.2
Enhanced ShockBurst™ overview ................................................. 22
3.4.3
Enhanced Shockburst™ packet format .......................................... 23
3.4.4
Automatic packet assembly ............................................................ 26
3.4.5
Automatic packet disassembly ....................................................... 27
3.4.6
Automatic packet transaction handling ........................................... 28
3.4.7
Enhanced ShockBurst flowcharts ................................................... 30
3.4.8
MultiCeiver™ .................................................................................. 33
3.4.9
Enhanced ShockBurst™ timing ...................................................... 35
3.4.10
Enhanced ShockBurst™ transaction diagram ................................ 38
3.4.11
Compatibility with ShockBurst™ ..................................................... 42
3.5
Data and control interface ................................................................... 43
3.5.1
SFR registers .................................................................................. 43
3.5.2
SPI operation .................................................................................. 44
3.5.3
Data FIFO ....................................................................................... 46
3.5.4
Interrupt .......................................................................................... 47
3.6
Register map ....................................................................................... 48
3.6.1
Register map table ......................................................................... 48
4
MCU ........................................................................................................... 54
4.1
Block diagram ..................................................................................... 55
4.2
Features .............................................................................................. 55
4.3
Functional description ......................................................................... 56
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nRF24LE1 Product Specification
4.3.1
Arithmetic Logic Unit (ALU) ............................................................ 56
4.3.2
Instruction set summary ................................................................. 56
4.3.3
Opcode map ................................................................................... 60
5
Memory and I/O organization .................................................................. 62
5.1
PDATA memory addressing ................................................................ 63
5.2
MCU Special Function Registers ........................................................ 63
5.2.1
Accumulator - ACC ......................................................................... 63
5.2.2
B Register – B ................................................................................ 63
5.2.3
Program Status Word Register - PSW ........................................... 64
5.2.4
Stack Pointer – SP ......................................................................... 64
5.2.5
Data Pointer – DPH, DPL ............................................................... 64
5.2.6
Data Pointer 1 – DPH1, DPL1 ........................................................ 65
5.2.7
Data Pointer Select Register – DPS ............................................... 65
5.2.8
PCON register ................................................................................ 65
5.2.9
Special Function Register Map ....................................................... 66
5.2.10
Special Function Registers reset values ........................................ 67
6
Flash memory ........................................................................................... 70
6.1
Features .............................................................................................. 70
6.2
Block diagram ..................................................................................... 70
6.3
Functional description ......................................................................... 71
6.3.1
Using the NV data memory ............................................................ 71
6.3.2
Flash memory configuration ........................................................... 71
6.3.3
Brown-out ....................................................................................... 76
6.3.4
Flash programming from the MCU ................................................. 77
6.3.5
Flash programming through SPI ..................................................... 77
6.3.6
Hardware support for firmware upgrade ......................................... 81
7
Random Access memory (RAM) ............................................................. 84
7.1
SRAM configuration ............................................................................ 84
8
Timers/counters ....................................................................................... 86
8.1
Features .............................................................................................. 86
8.2
Block diagram ..................................................................................... 86
8.3
Functional description ......................................................................... 87
8.3.1
Timer 0 and Timer 1 ....................................................................... 87
8.3.2
Timer 2 ........................................................................................... 89
8.4
SFR registers ...................................................................................... 91
8.4.1
Timer/Counter control register – TCON .......................................... 91
8.4.2
Timer mode register - TMOD .......................................................... 92
8.4.3
Timer 0 – TH0, TL0 ........................................................................ 92
8.4.4
Timer 1 – TH1, TL1 ........................................................................ 92
8.4.5
Timer 2 control register – T2CON .................................................. 93
8.4.6
Timer 2 – TH2, TL2 ........................................................................ 93
8.4.7
Compare/Capture enable register – CCEN .................................... 94
8.4.8
Capture registers – CC1, CC2, CC3 .............................................. 94
8.4.9
Compare/Reload/Capture register – CRCH, CRCL ....................... 95
8.5
Real Time Clock - RTC ....................................................................... 95
8.5.1
Features ......................................................................................... 95
Revision 1.6
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