Product Specs
Table Of Contents
- FEATURESAPPLICATIONS
- GENERAL DESCRIPTION
- QUICK REFERENCE DATA
- PIN FUNCTIONS
- ELECTRICAL SPECIFICATIONS
- Package marking:
- Absolute Maximum Ratings
- Temperatures
- ATTENTION!
- Glossary of Terms
- FUNCTIONAL DESCRIPTION
- Pin functions in the different modes of nRF24L01
- Standby Modes
- Power Down Mode
- Packet Handling Methods
- ShockBurst™
- Enhanced ShockBurst™
- Enhanced ShockBurst™ Transmitting Payload:
- Enhanced ShockBurstTM Receive Payload:
- DEVICE CONFIGURATION
- SPI Interface
- SPI Instruction Set
- Interrupt
- SPI Timing
- Memory Map
- Configuration for compatibility with nRF24XX
- PACKET DESCRIPTION
- IMPORTANT TIMING DATA
- nRF24L01 Timing Information
- Enhanced ShockBurst™ timing
- PERIPHERAL RF INFORMATION
- Output Power adjustment
- Crystal Specification
- nRF24L01 sharing crystal with a micro controller.
- Crystal parameters:
- Input crystal amplitude & Current consumption
- PCB layout and de-coupling guidelines
- APPLICATION EXAMPLE
- DEFINITIONS
- LIFE SUPPORT APPLICATIONS
- YOUR NOTES
- 空白页面
- 空白页面
- 空白页面
- 空白页面
PRELIMINARY PRODUCT SPECIFICATION
nRF24L01 Single Chip 2.4 GHz Radio Transceiver
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Page 30 of 38
Revision: 1.1
November 2005
Input crystal amplitude & Current consumption
The input signal should not have amplitudes exceeding any rail voltage, but any DC-
voltage within this is OK. Exceeding rail voltage will excite the ESD structure and the
radio performance is degraded below specification. If testing the nRF24L01 with a RF
source with no DC offset as the reference source, the input signal will go below the
ground level, which is not acceptable.
Figure 12 Principle of crystal oscillator
The nRF24L01 crystal oscillator is amplitude regulated. To achieve low current
consumption and also good signal-to-noise ratio when using an external clock, it is
recommended to use an input signal larger than 0.4 V-peak. When clocked externally,
XC2 is not used and can be left as an open pin.