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

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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

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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

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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

RFM01

f

LO

frequency
(8MHZ crystal used)

f

LO

frequency
(12MHZ crystal used)

BW

Receiver bandwidth

t

PLL lock time After 10MHz step hopping,

lock

T

PLL start time After crystal stabilized 250 us

st, p

BR Data rate With internal digital

BRA Data rate With external RC filter 256 kbps

P

min

AFC

sensitivity

AFC working range

range

RSA RSSI accuracy ±5 dB
RSR RSSI range 46 dB
C

ARSSI filter 1 nF

ARSSI

RS

RSSI programmable

STEP

step

RS

DRSSI response time RSSI output high after valid ,

RESP

CXL Capacitor bank Programmable step with

T

PWR time Vdd reach 90% 50 100 mS

POR

T

Wakeup timer period Calibrated each 30s

PBT

T

Programmable

WAKE-UP

wakeup time
TSX Crystal start up time Crystal ESR < 100 Ohms 5 mS
C

Load capacitance 2 pF

IN,D

T

Output rising edge With 15PF load 10 ns

r,F

315 MHz band,2.5KHz step
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
315 MHz band,2.5KHz step
433 MHz band,2.5KHz step
868 MHz band,5KHz step
915 MHz band,7.5KHz step
1
2
3
4
5
6

frequency error <10 kHz

demodulator

BW=134KHz,BR=1.2kbps,315MHz band

BW=134KHz,BR=1.2kbps,433MHz band

BW=134KHz,BR=1.2kbps,868MHz band

BW=134KHz,BR=1.2kbps,915MHz band

: received signal

δF

fsk

modulation depth

6 dB

C

=5nF

ARRSI

0.5pF step, +/- 10%

1 5*10E11 mS

Version: 1.2 Date: 10/17/2008

248.19

344.19

688.38

720.57

372.28

516.28

1032.5

1080.8
60
120
180
240
300
360

255.80

351.80

703.61

743.41

383.71

527.71

1055.4

1115.1
67
134
200
270
350
400

75
150
225
300
375
450

20 us

115.2 kbps

-109 -100

-109 -100

-105 -98

-105 -98

0.8*δF

fsk

500 us

8.5 16 pF

0．96

1．08

MHz

MHz

kHz

dBm

mS

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RFM01

Field testing range

Band Test condition Distance
433MHz band Receiver bandwidth =134KHz, data rate=1.2kbps, transmitter

modulation=60KHZ（matches with RF02B）
In free open area

868MHz band Receiver bandwidth=134KHz,data rate =1.2kbps

Transmitter modulation=60KHZ（matches with RFM02B）in free
open area

915MHz band Receiver bandwidth=134KHz,data rate =1.2kbps

Transmitter modulation=60KHZ（matches with RFM02B）in free
open area

Version: 1.2 Date: 10/17/2008

>300M

>200M

>200M

Mechanical Dimension

（units in mm）

SMD PACKAGE（S1）

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RFM01

SMD PACKAGE（S2）

Version: 1.2 Date: 10/17/2008

DIP PACKAGE（D）

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RFM01

Version: 1.2 Date: 10/17/2008

Module Model Definition

model=module-operation_band-package_type

RFM01-433-D

module type operation band Package

Note: SMD packages is divided into two kinds based on thickness: 1. thickness is 4.2mm, 2. thickness is

2.2mm

example：1，RFM01 module at 433MHz band ,DIP: RFM01-433-D。
2，RFM01 module at 868MHZ band,SMD, thickness at 4.2mm: RFM01-868-S1。

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RFM01

RF01 And RFM01 Product Change Notification

Prior Product Revision #: J

New Product Revision #: J1

FUNCTION / ISSUE IMPLEMENTED CHANGES

The control of the wake up timer’s

Wake Up Timer calibration

1

internal calibration has been changed to
prevent an unnecessary Xosc on state

Version: 1.2 Date: 10/17/2008

Wake Up Timer startup

2

Unlocking of the PLL in 315 MHz

3

band
Unknown VDI state when the receiver

4

chain is switched off
When the device wakes from sleep

mode, no clock is available on the

5

CLK (PIN 8).
If the µC CLK output was used in
LPDM mode, the internal logic control
did not switch off the crystal oscillator

6

during the idle period of the LPDM
cycle.

HOPE MICROELECTRONICS CO.,LTD

Rm B.8/F LiJingGe Emperor Regency 6012
ShenNan Rd., Shenzhen,China
Tel: [phone]
Fax: [phone]
Email: [e-mail]

[e-mail]

t

Website: http://www.hoperf.com
http://www.hoperf.cn

http://hoperf.en.alibaba.com

The Wake Up Timer has been modified
to provide faster start up.

The reference clock duty cycle was
tuned closer to 50%, which eliminated
the 315 MHz PLL lock issues.

VDI is set to logic low when receiver
chain is switched off

The modifications eliminated this
problem.

The modifications eliminated this
blem.

This document may contain preliminary information and is subject to
change by Hope Microelectronics without notice. Hope
Microelectronics assumes no responsibility or liability for any use of
the information contained herein. Nothing in this document shall
operate as an express or implied license or indemnity under the
intellectual property rights of Hope Microelectronics or third parties.
The products described in this document are not intended for use in
implantation or other direct life support applications where malfunction
may result in the direct physical harm or injury to persons. NO
WARRANTIES OF ANY KIND, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MECHANTABILITY OR FITNESS
FOR A ARTICULAR PURPOSE, ARE OFFERED IN THIS
DOCUMENT.

©2008, HOPE MICROELECTRONICS CO.,LTD. All rights reserved.

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