NRF24L01英文数据手册

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NRF24L01英文数据手册,讲解非常清楚,比中文的实用许多。
nRF24L01 Product Specification NORDIC SEMICONDUCTOR Writing conventions This product specification follows a set of typographic rules that makes the document consistent and easy to read. The following writing conventions are used Commands, bit state conditions, and register names are written in Courier Pin names and pin signal conditions are written in Courier bold Cross references are underlined and highlighted in blue Revision History Date Version Description July 2007 2.0 Restructured layout in a new template Added details of the following features Dynamic Payload Length(DPL Acknowledgement Payload (ACK PLD Feature register ACTIVATE SPI cOmmand Selective Auto Acknowledgement (NO ACK) Revision 2.0 Page 3 of 74 NORDIC nRF24L01 Product Specification Contents Introduction Features 1.2 Block diagram 789 2 Pin Information ■■■■■■■■■■■■■■■■■■■■■ 10 2.1 Pin assignment 2.2 Pin functions 11 345 Absolute maximum ratings 12 Operating conditions…,,,,,,,,,…,… E| ectrical specifications……,,,,,,,,…,,…, 14 5.1 Power consumption.. General rF conditions ■口■11 15 Transmitter operation Receiver operation 5.5 Crystal specifications…… 5.6 DC characteristics 18 5.7 Power on reset 18 6 Radio control 19 6 Operational modes 6.1.1 State diagram 19 6.1.2 Power down mode.…… ..:aaa:aaaa::aaaa::aaaa::a ■重11D面 20 6.13 Standby Modes 20 6.14 RX mode 21 6.15 TⅩmode .:.:aa::::aa“:.:aa::a:::a:: 6.1.6 Operational modes configuration 6.1.7 Timing Information 22 6.2 Air data rate 2 6.3 RF channel frequency. .........................................................................23 64 PA control 重重日1重1重1重 23 6.5 LNA gain……… 66 RX/TX Control 23 7 Enhanced shockBurstTM,m..mmmwmmo. 24 7.1 Features .24 Enhancedshockburstmoverview,.wwwwww.ww...24 7.3 Enhanced Shockburst M packet format..….….………………25 7.3.1 Preamble 重1 25 7.3.2 Address 25 Packet Control field 25 7.3.4 Payload 26 7.3.5 CRc( Cyclic Redundancy Check)………,…,… 26 7.4 Automatic packet handling…....…………,26 7.4.1 Static and Dynamic Payload Length 26 74.2 Automatic packet assembly 27 74.3 Automatic packet validation 27 7.4 Automatic packet disassembly 28 Automatic packet transaction handling…… 28 Revision 2.0 Page 4 of 74 nRF24L01 Product Specification NORDIC SEMICONDUCTOR 7.5.1 Auto Acknowledgement 29 7.5.2 Auto Retransmission (ART) .29 Enhanced shock Burst flowcharts 7.6.1 PTX operation 31 7.6.2 PRX operation 33 Multiceiver 8 Enhanced Shock BurstTM timing 38 7.9 Enhanced Shock BurstTM transaction diagram..... 40 7.9.1 Single transaction with ACK packet and interrupts 40 7.9.2 Single transaction with a lost packet ,41 7.9.3 Single transaction with a lost ACK packet 41 7.94 Single transaction with ACK payload packet and lost packe, .......42 Single transaction with ACK payload packet 7.9.5 42 7.9.6 Two transactions with ACK payload packet and the first ACK packet lost 43 7.9.7 Two transactions where max retransmissions is reached ww,43 7.10 Compatibility with Shock Burst TM 7.10.1 Shock Burst Tm packet format 44 8 Data and Control Interface 45 8.1 Features .45 8.2 Functional description..............……245 8.3 SPI operation ……………………………45 8.3.1 SPI Commands∴ 45 8.3.2 SPI timing..............47 8. Data fiFo 51 8.5 Interrupt 52 9 Register Map.…,,,…, ∴53 9.1 Register map table B.I..-------“a:: 53 10 Peripheral RF Information……,…,…,…,,……,…,…,…,…,……,……59 Antenna output.,,……,…………………59 10.2 Crystal oscillator ■,重D重, 10.3 nRF24L01 sharing crystal with an MCU 59 10.3.1 Crystal parameters 59 0.3.2 Input crystal amplitude and current consumption ....................59 10.4 PCB layout and decoupling guidelines.…….…....…..60 11 Mechanical specifications n61 12 Ordering information...….…,…,,…,…,…,…,……………63 12.1 Package marking… 63 12.2 Abbreviations 63 13 Glossary of Terms.,,,,,,,…,…,…… 64 Appendix A- Enhanced Shock M-Configuration and communication Example………,…,…,…,………………65 Enhanced Shock Burst M Transmitting Payload 65 Enhanced Shock Burst TM Receive Payload 65 AppendⅸxB- Configuration for compatibility with nRF24XX.………….67 Appendix c- Carrier wave output power..,…,…,…,… 68 Revision 2.0 Page 5 of 74 NORDIC nRF24L01 Product Specification SEM|C0ND∪CT0R Configuration 68 Appendix D- Application example……….…...689 PCB layout examples AppendⅸxE- Stationary disturbance detection………………………74 Revision 2.0 Page 6 of 74 nRF24L01 Product Specification NORDIC SEMICONDUCTOR 1 Introduction The nRF24L01 is a single chip 2.4GHz transceiver with an embedded baseband protocol engine (Enhanced Shock BurstTM), designed for ultra low power wireless applications. The nRF24L01 is designed for operation in the world wide ISM frequency band at 2.400 -2 4835GHZ An MCU (microcontroller) and very few external passive components are needed to design a radio system with the nRF24L01 The nRF24L01 is configured and operated through a Serial Peripheral Interface(SPL )Through this inter- face the register map is available. The register map contains all contiguration registers in the nRF24L01 and is accessible in all operation modes of the chip The embedded baseband protocol engine(Enhanced Shock Burst TM )is based on packet communication and supports various modes from manual operation to advanced autonomous protocol operation Internal FIFOs ensure a smooth data flow between the radio front end and the systems MCU. Enhanced Shock Burst reduces system cost by handling all the high-speed link layer operations The radio front end uses gFsK modulation It has user configurable parameters like frequency channel output power and air data rate The air data rate supported by the nRF24L01 is configurable to 2 Mbps. The high air data rate combined with two power saving modes makes the nRF24L01 very suitable for ultra low power designs Internal voltage regulators ensure a high Power Supply Rejection Ratio(PsRR)and a wide power supply ran Revision 2.0 Page 7 of 74 NORDIC nRF24L01 Product Specification SEM|C0ND∪CT0R Features Features of the nrF24l0 1 include Radio Worldwide 2. 4GHz ISM band operation 126 RF channels Common rx and t×pins GFSK modulation 1 and 2 Mbps air data rate 1MHz non-overlapping channel spacing at 1 Mbps 2MHZ non-overlapping channel spacing at 2Mbps Transmitter Programmable output power: 0,-6,-12 or-18dBm 113ma at odBm output power · Receiver Integrated channel filters 12.3mA at 2Mbps -82dBm sensitivity at 2Mbps -85dBm sensitivity at 1 Mbps Programmable lna gain RF Synthesizer Fully integrated synthesizer No external loop filer, vco varactor diode or resonator Accepts low cost +60ppm 16MHz crystal Enhanced shockBurst Tm 1 to 32 bytes dynamic payload length t Automatic packet handling Auto packet transaction handling b6 data pipe MultiCeiver M for 1: 6 star networks Power Management Integrated voltage regulator 1.9 to 3.6V supply range Idle modes with fast start-up times for advanced power management 22uA Standby-l mode, 900nA power down mode Max 1.5ms start-up from power down mode Max 1 30us start-up from standby-I mode Host Interface 4-pin hardware SPl Max 8Mbps 3 separate 32 bytes TX and RX FIFOs 5V tolerant inputs Compact 20-pin 4x4mm QFN package Revision 2.0 Page 8 of 74 nRF24L01 Product Specification NORDIC SEMICONDUCTOR 2 Block diagram RE Transmitter Baseband CSN GFSK TX FIFOS SCK RE Receiver Enhanced shock Bu MOS Baseband Engine ANT1 IRQ LNA RX GFSK CE ANT2 RX FIFOS XC1 RF Synthesiser Power Management Radio Control XC2 aQ> L Figure 1. nRF24L01 block diagram Revision 2.0 Page 9 of 74 NORDIC nRF24L01 Product Specification SEM|C0ND∪CT0R 2 Pin Information Pin assignment 19 17 16 15 VDD N|2 14 VSS nRF24L01 13 ANT2 QFN204×4 os工 12 ANT1 4工S 11 VDD PA 10 c Figure 2. nRF24L01 pin assignment (top view) for the QFN20 4x 4 package Revision 2.0 Page 10 of 74

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