Rainbow Electronics RFM01 User Manual
RFM01
Version: 1.2 Date: 10/17/2008
ISM BAND FSK RECEIVER MODULE
RFM01
（the purpose of this spec covers mainly for the physical
characteristic of the module, for register configure and its
related command info please refer to RF01 data sheets
）
General Introduction
RFM01 is a low costing ISM band receiver module
implemented with unique PLL and zero IF design approach.
It works with FSK modulated signal ranges from
315/433/868/915MHZ bands, comply with FCC, ETSI
regulation. The SPI interface is used to communicate with
microcontroller for parameter setting. RFM01 works with
RFM02 transmitter module. At 433MHZ band, the pair of
module can work up to 300m in the free open air.
RFM01
Features:
• Low costing, high performance and price ratio
• Tuning free during production
• FSK reception
• PLL and zero IF technology
• Fast PLL lock time
• High resolution PLL with 2.5 KHz step
• High data rate (up to 115.2 kbps with internal demodulator，with external RC filter highest data rate is
256 kbps)
• Differential antenna input
• Automatic antenna tuning
• Programmable receiver bandwidth (from 67 to 400 kHz)
• Analog and digital signal strength indicator (ARSSI/DRSSI)
• AFC
• DQD
• Internal demodulator
• SPI interface
• Clock and reset signal output for external MCU use
• 16 bits FIFO
• Low power mode (<0.5mA averaged current consumption)
• 10MHz crystal for PLL timing
• Wakeup timer
• Low battery detection
• Programmable capacitor bank
• 2.2V - 5.4V power supply
• Low power consumption
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
RFM01
• Stand by current less than 0.3uA
T ypical Application：
• Remote control
• Remote sensor
• Wireless data collection
• Home security system
• Toys
• Tire pressure monitoring system
Pin Definition：
SMD DIP
Version: 1.2 Date: 10/17/2008
definition Type Function
VDI DO Valid data indicator
VDD S Positive power supply
SDI DI SPI data input
SCK DI SPI clock input
nSEL DI Chip select (active low)
FFIT/SDO DO FIFO fill interrupt(active low) or status read data output
nRES DO
GND S Power ground
nIRQ DO
DATA/nFFS DO/DI Data input(non FIFO mode)/ FIFO select
DCLK/CFIL/FFIT DO/AIO/DO
CLK DO Clock output for external microcontroller
Reset output（active low）
Interrupts request output（active low）
Clock output (no FIFO )/ external filter capacitor(analog mode)/ FIFO
interrupts(active high)when FIFO level set to 1, FIFO empty
interruption can be achieved
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
RFM01
Electrical Parameter：
Maximum（not at working mode）
symbol parameter minimum maximum Unit
Vdd Positive power supply -0.5 6.0 V
Vin All pin input level -0.5 Vdd+0.5 V
Iin Input current except power -25 25 MA
ESD Human body model 1000 V
Tst Storage temperature -55 125
Tld Soldering temperature(10s) 260
Recommended working range
symbol parameter minimum maximum Unit
Vdd Positive power supply 2.2 5.4 V
Top Working temperature -40 85
DC characteristic
symbol parameter Remark minimum typical maximum Unit
Idd Current consumption 315,433MHz band
868,915MHz band
Ix Stand by current Crystal and base
band on
Ipd Sleep mode current
Ilb Low battery detection 0.5 uA
Vlb Low battery step 0.1V per step 2.2 5.3 V
V
Low battery detection
lba
accuracy
Vil Low level input 0.3*Vdd V
Vih High level input 0.7*Vdd V
Iil Leakage current Vil=0V -1 1 uA
Iih Leakage current Vih=Vdd,Vdd=5.4V -1 1 uA
Vol Low level output Iol=2mA 0.4 V
Voh High level output Ioh=-2mA Vdd-0.4 V
Note: before entering sleep mode, all interrupt should be handled, otherwise the crystal oscillator still
running and consume 3mA appr. current.
AC characteristic
symbol parameter remark min typical max Unit
f
PLL frequency Parallel fundamental 8 10 12 MHz
ref
f
LO
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
frequency
(10MHz crystal used)
All blocks off(Note)
75 mV
315 MHz band,2.5KHz step
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
Version: 1.2 Date: 10/17/2008
℃
℃
℃
9
10.5
0.3 uA
310.24
430.24
860.48
900.72
3．0 3．5
319.75
11
12.5
439.75
879.51
929.27
mA
mA
MHz
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