HOPERF RFM12B

RFM12B
Datasheet REV1.2
UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE
RFM12B
(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 RF12B data sheets)
RFM12B
General Introduction
RFM12B is a low costing ISM band transceiver
module implemented with unique PLL. It works
signal ranges from 433/868/915MHZ bands, comply
with FCC, ETSI regulation. The SPI interface is
used to communicate with microcontroller for
parameter setting.
Features:
• Low costing, high performance and price ratio
• Tuning free during production
• 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/output
• Automatic antenna tuning
• Programmable TX frequency deviation (from 15 to 240 KHz)
• Programmable receiver bandwidth (from 67 to 400 kHz)
• Analog and digital signal strength indicator (ARSSI/DRSSI)
• Automatic frequency control (AFC)
• Data quality detection (DQD)
• Internal data filtering and clock recovery
• RX synchron pattern recognition
• SPI compatible serial control interface
• Clock and reset signal output for external MCU use
• 16 bit RX Data FIFO
• Two 8 bit TX data registers
• Standard 10 MHz crystal reference
• Wakeup timer
• 2.2V – 3.8V power supply
• Low power consumption
• Standby current less than 0.3uA
• Supports very short packets (down to 3 bytes)
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RFM12B
Datasheet REV1.2
Typical Application:
• Remote control
• Remote sensor
• Wireless data collection
• Home security system
• Toys
• Tire pressure monitoring system
Pin Definition:
SMD
DIP
definition
Type
Function
nINT/VDI
DI/ DO
Interrupt input (active low)/Valid data indicator
VDD
S
Positive power supply
SDI
DI
SPI data input
SCK
DI
SPI clock input
nSEL
DI
Chip select (active low)
SDO
DO
Serial data output with bus hold
nIRQ
DO
Interrupts request output(active low)
FSK/DATA/nFFS
DI/DO/DI
Transmit FSK data input/ Received data output (FIFO not used)/ FIFO
select
DCLK/CFIL/FFIT
DO/AIO/DO
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
CLK
DO
Clock output for external microcontroller
nRES
DIO
Reset output(active low)
GND
S
Power ground
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
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RFM12B
Datasheet REV1.2
Iin
Input current except power
ESD
Human body model
Tst
Storage temperature
Tld
Soldering temperature(10s)
-25
-55
25
mA
1000
V
125
℃
260
℃
Recommended working range
symbol
parameter
minimum
maximum
Unit
Vdd
Positive power supply
2.2
3.8
V
Top
Working temperature
-40
85
℃
DC characteristic
symbol
parameter
Remark
Idd_TX_0
Supply current
(TX mode, Pout = 0dBm)
Idd_TX_PMAX
Idd_RX
minimum
typical
maximum
Unit
315,433MHz band
15
17
mA
868MHz band
16
18
915MHz band
17
19
Supply current
315,433MHz band
22
24
(TX mode, Pout = Pmax)
868MHz band
23
25
915MHz band
24
26
Supply current
315,433MHz band
11
13
(RX mode)
868MHz band
12
14
915MHz band
13
15
1.2
mA
mA
Ix
Idle current
Crystal oscillator on
0.62
Ipd
Sleep mode current
All blocks off
0.3
uA
Ilb
Low battery detection
0.5
uA
Vlb
Low battery detect
0.1V per step
mA
2.2
3.7
V
0
5
%
0.3*Vdd
V
threshold
Vlba
Low battery detection
accuracy
Vil
Low level input
Vih
High level input
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
0.7*Vdd
V
Vdd-0.4
V
AC characteristic
symbol
parameter
fref
PLL frequency
fLO
remark
min
typical
max
Unit
9
10
11
MHz
frequency
433 MHz band,2.5KHz step
430.24
439.7
(10MHz crystal
868 MHz band,5KHz step
860.48
5
used)
915 MHz band,7.5KHz step
900.72
879.5
1
929.2
7
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MHz
RFM12B
Datasheet REV1.2
fLO
frequency
433 MHz band,2.5KHz step
387.22
395.7
(9MHZ crystal
868 MHz band,5KHz step
774.43
6
used)
915 MHz band,7.5KHz step
810.65
791.5
MHz
6
836.3
4
fLO
frequency
433 MHz band,2.5KHz step
473.26
483.7
(11MHZ crystal
868 MHz band,5KHz step
946.53
3
used)
915 MHz band,7.5KHz step
990.79
967.4
MHz
6
1022.
2
BW
tlock
Receiver
mode 0
60
67
75
bandwidth
mode 1
120
134
150
mode 2
180
200
225
mode 3
240
270
300
mode 4
300
350
375
mode 5
360
400
450
PLL lock time
After 10MHz step hopping, frequency
30
KHz
us
error <10 kHz
tst, P
PLL startup time
With a running crystal
200
oscillator
BR
Data rate
With internal digital demodulator
BRA
Data rate
With external RC filter
0.6
-3
Pmin
AFCrange
300
115.2
kbps
256
kbps
BER 10 , BW=134KHz,BR=1.2kbps, 433MHz band
-109
-100
BER 10-3, BW=134KHz,BR=1.2kbps, 868MHz band
-105
-100
BER 10-3, BW=134KHz,BR=1.2kbps, 915MHz band
-105
-100
AFC working
dfFSK : FSK deviation in the received
0.8*
range
signal
dfFSK
sensitivity
us
dBm
RSA
RSSI accuracy
±5
dB
RSR
RSSI range
46
dB
CARSSI
ARSSI filter
1
nF
RSSTEP
RSSI
6
dB
500
us
programmable
step
RSRESP
DRSSI response
RSSI output high after valid ,
time
CARRSI=5nF
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RFM12B
Datasheet REV1.2
AC characteristic(Transmitter)
symbol
Pmax
Pout
parameter
Max. available output power
Typical output power
remark
min
typical
433MHz band
3
5
868MHz band
2
4
915MHz band
2
4
Selectable in 3 dB
Pmax-21
max
Unit
dBm
Pmax
dbm
pf
steps
Co
Output capacitance
In low bands
2
2.6
3.2
(set by the automatic antenna
In high bands
2.1
2.7
3.3
Quality factor of the output
In low bands
13
15
17
capacitance
In high bands
8
10
12
tuning circuit)
Qo
Lout
BRTX
Output phase noise
FSK bit rate
100 kHz from carrier
-80
1 MHz from carrier
-103
dbc/HZ
Via internal TX data
172
kbps
256
kbps
240
kHZ
register
BRATX
FSK bit rate
TX data connected to the
FSK input
dffsk
FSK frequency deviation
Programmable in 15
15
kHz steps
AC characteristic(Turn-on/Turnaround timings)
symbol
parameter
remark
min
Tst
Crystal oscillator
Crystal ESR < 100
typical
max
Unit
1
5
ms
startup time
Transmitter
Ttx_XTAL_ON
turn-on
off,
crystal
time
oscillator on with 10 MHz step
Receiver turn-on time
Synthesizer
Trx_XTAL_ON
off,
crystal
oscillator on with 10 MHz step
Transmitter
Ttx_rx_SYNT_ON
Synthesizer
–
Receiver turnover time
Synthesizer
and
250
us
250
us
150
us
150
us
crystal
oscillator on during TX/RX
change with 10 MHz step
Receiver
Trx_tx_SYNT_ON
Transmitter
–
turnover
time
Cxl
tPOR
Synthesizer
and
crystal
oscillator on during RX/TX
change with 10 MHz step
Crystal load
Programmable in 0.5 pF steps,
capacitance
tolerance+/- 10%
Internal POR timeout
8.5
After Vdd has reached 90% of
16
pf
100
ms
1.05
ms
2
pf
10
ns
final value
tPBt
Wake-up timer clock
Calibrated every 30 seconds
0.96
period
Cin, D
Digital input apacitance
tr, f
Digital output rise/fall time
15pF pure capacitive load
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RFM12B
Datasheet REV1.2
Field testing range
Band
Test condition
Distance
433MHz band
Receiver bandwidth =67KHz, data rate=1.2kbps, transmitter frequency
>200M
deviation =45KHZ(matches with RFM12)In free open area
868MHz band
Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency
>200M
deviation =45KHZ(matches with RFM12)in free open area
915MHz band
Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency
>200M
deviation =45KHZ(matches with RFM12)in free open area
SGS Reports
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RFM12B
Datasheet REV1.2
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RFM12B
Datasheet REV1.2
Mechanical Dimension
(units in mm)
SMD PACKAGE(S1)
SMD PACKAGE(S2)
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RFM12B
Datasheet REV1.2
DIP PACKAGE(D)
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RFM12B
Datasheet REV1.2
Module Model Definition
model=module-operation_band-package_type
RFM12B – 433-D
module type
operation band
Package
example:1,RFM12B module at 433MHz band, DIP : RFM12B-433-D。
2,RFM12B module at 868MHZ band, SMD, thickness at 4.2mm: RFM12B-868-S1。
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
HOPE MICROELECTRONICS CO.,LTD
operate as an express or implied license or indemnity under the
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intellectual property rights of Hope Microelectronics or third parties.
Huaqiaocheng,
The products described in this document are not intended for use in
Shenzhen,
implantation or other direct life support applications where malfunction
China
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Fax:
Email:
Guangdong,
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[email protected]
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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
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