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PDF RFM65CW Data sheet ( Hoja de datos )

Número de pieza RFM65CW
Descripción ISM RECEIVER MODULE
Fabricantes HOPERF 
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RFM65CW ISM RECEIVER MODULE V1.1 
GENERAL DESCRIPTION
`
The RFM65CW is a low cost receiver module capable
of operation in 3 1 5 ,433,868 and 915 MHz license-free
ISM (Industry Scientific and Medical) frequency bands. All
major RF communication parameters are programmable
and most of them can be dynamically set. The RFM65CW
offers the unique advantage of programmable narrow-band
and wide-band communication modes. The RFM65CW is
optimized for low power consumption while offering high
sensitivity and channelized operation. Compliance ETSI and
FCC regulations.
In order to better use RFM65CW modules, this specification
also involves a large number of the parameters and
functions of its core chip RF65's, including those IC pins
which are not leaded out. All of these can help customers
gain a better understanding of the performance of
RFM65CW modules, and enhance the application skills.
RFM65CW
RFM65CW
KEY PRODUCT FEATURES
z High Sensitivity: down to -120 dBm at 1.2 kbps
z High Selectivity: 16-tap FIR Channel Filter
z Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,
80 dB Blocking Immunity, no Image Frequency
response
z Low current: Rx = 16 mA, 100nA register retention
z Constant RF performance over voltage range of
module
z FSK Bit rates up to 300 kb/s
z Fully integrated synthesizer with a resolution of 61 Hz
z FSK, GFSK, MSK, GMSK and OOK demodulation
z Built-in Bit Synchronizer performing Clock Recovery
z Incoming Sync Word Recognition
z 115 dB+ Dynamic Range RSSI
z Automatic RF Sense with ultra-fast AFC
z Packet engine with CRC, AES-128 encryption and 66-
byte FIFO
z Built-in temperature sensor and Low Battery indicator
z Module size:16X16mm
APPLICATIONS
z Automated Meter Reading
z Wireless Sensor Networks
z Home and Building Automation
z Wireless Alarm and Security Systems
z Industrial Monitoring and Control
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http:/ / www.hoperf.com Page 1
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RFM65CW pdf
ADVANCED COMMUNICATIONS & SENSING
RFM65CW
DATASHEET
Index of Figures
Page
Figure 1. Block Diagram ................................................................................................................................................ 8
Figure 2. Pin Diagram .................................................................................................................................................... 9
Figure 3. Marking Diagram ............................................................................................................................................ 9
Figure 4. TBD
................................................................................................................................... 15
Figure 5. Receiver Block Diagram ............................................................................................................................... 17
Figure 6. AGC Thresholds Settings ............................................................................................................................. 19
Figure 7. Cordic Extraction .......................................................................................................................................... 22
Figure 8. OOK Peak Demodulator Description ............................................................................................................ 24
Figure 9. Floor Threshold Optimization ....................................................................................................................... 25
Figure 10. Bit Synchronizer Description ...................................................................................................................... 26
Figure 11. FEI Process ................................................................................................................................................ 27
Figure 12. Optimized Afc (AfcLowBetaOn=1) .............................................................................................................. 28
Figure 13. Temperature Sensor Response ................................................................................................................. 29
Figure 14. Rx Startup - No AGC, no AFC .................................................................................................................... 31
Figure 15. Rx Startup - AGC, no AFC ......................................................................................................................... 31
Figure 16. Rx Startup - AGC and AFC ........................................................................................................................ 31
Figure 17. Listen Mode Sequence (no wanted signal is received) .............................................................................. 33
Figure 18. Listen Mode Sequence (wanted signal is received) ................................................................................... 35
Figure 19. Auto Modes of Packet Handler ................................................................................................................... 36
Figure 20. RFM65CW Data Processing Conceptual View .................................................................................. .........37
Figure 21. SPI Timing Diagram (single access) .......................................................................................................... 38
Figure 22. FIFO and Shift Register (SR) ..................................................................................................................... 39
Figure 23. FifoLevel IRQ Source Behavior .................................................................................................................. 40
Figure 24. Sync Word Recognition .............................................................................................................................. 41
Figure 25. Continuous Mode Conceptual View ........................................................................................................... 43
Figure 26. Rx Processing in Continuous Mode ........................................................................................................... 43
Figure 27. Packet Mode Conceptual View ................................................................................................................... 44
Figure 28. Fixed Length Packet Format ...................................................................................................................... 45
Figure 29. Variable Length Packet Format .................................................................................................................. 46
Figure 30. Unlimited Length Packet Format ................................................................................................................ 46
Figure 31. CRC Implementation .................................................................................................................................. 50
Figure 32. Manchester Decoding ................................................................................................................................ 50
Figure 33. Data De-Whitening ..................................................................................................................................... 51
Figure 34. POR Timing Diagram ................................................................................................................................. 66
Figure 35. Manual Reset Timing Diagram ................................................................................................................... 67
Figure 36. Application Schematic ................................................................................................................................ 67
Figure 37. Package Outline Drawing ........................................................................................................................... 68
Figure 38. Listen Mode Resolutions, V2a ................................................................................................................... 69
Figure 39. Listen Mode Resolution, V2b ..................................................................................................................... 69
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http:/ / www.hoperf.com
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RFM65CW arduino
ADVANCED COMMUNICATIONS & SENSING
RFM65CW
DATASHEET
2. Electrical Characteristics
2.2. Absolute Maximum Ratings
Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for
extended periods may affect device reliability.
Table 2 Absolute Maximum Ratings
Symbol
VDDmr
Tmr
Tj
Pmr
Supply Voltage
Temperature
Junction temperature
RF Input Level
Description
Min Max Unit
-0.5 3.9 V
-55
+115
°C
-
+125
°C
- +6 dBm
2.3. Operating Range
Table 3 Operating Range
Symbol
VDDop
Top
Clop
ML
Description
Supply voltage
Operational temperature range
Load capacitance on digital ports
RF Input Level
Min Max Unit
1.8 3.6 V
-40 +85 °C
- 25 pF
- 0 dBm
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http:/ / www.hoperf.com
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