RFM12B-915S1P_技术文档

RFM12B

Datasheet REV2.0

UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE

RFM12B

（the purpose of this spec covers mainly for the

RFM12B

physical characteristic of the module, for register

configure and its related command info please refer

to RF12B data sheets）

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 REV2.0

Typical Application：

• Remote control

• Remote sensor

• Wireless data collection

• Home security system

• Toys

• Tire pressure monitoring system

Pin Definition：

SMD

DIP

definition

nINT/VDI

VDD

Type

DI/ DO

S

Function

Interrupt input (active low)/Valid data indicator

Positive power supply

SDI

DI

SPI data input

SCK

DI

SPI clock input

nSEL

SDO

DI

Chip select (active low)

DO

Serial data output with bus hold

Interrupts request output（active low）

nIRQ

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

DIO

S

Clock output for external microcontroller

Reset output（active low）

Power ground

nRES

GND

Electrical Parameter：

Maximum（not at working mode）

symbol

parameter

minimum

-0.5

maximum

6.0

Unit

V

V_dd

Positive power supply

All pin input level

V_in

-0.5

Vdd+0.5

V

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RFM12B

Datasheet REV2.0

25 mA

I_in

Input current except power

Human body model

-25

-55

ESD

T_st

1000

125

V

Storage temperature

℃

T_ld

Soldering temperature(10s)

260

Recommended working range

symbol

parameter

minimum

2.2

maximum

Unit

V

V_dd

Positive power supply

Working temperature

3.8

85

T_op

-40

℃

DC characteristic

symbol

parameter

Remark

minimum typical maximum Unit

I_{dd_TX_0}

Supply current

315,433MHz band

15

16

17

22

23

24

11

17

18

19

24

25

26

13

14

15

1.2

mA

(TX mode, P_out= 0dBm) 868MHz band

915MHz band

I_{dd_TX_PMAX}Supply current

(TX mode, P_out= P_max

315,433MHz band

868MHz band

)

915MHz band

I_{dd_RX}

Supply current

315,433MHz band

868MHz band

(RX mode)

12

13

0.62

0.3

0.5

915MHz band

I_x

Idle current

Crystal oscillator on

All blocks off

mA

uA

V

I_pd

I_lb

Sleep mode current

Low battery detection

Low battery detect

threshold

V_lb

0.1V per step

2.2

0

3.7

V_lba

Low battery detection

accuracy

5

%

V_il

V_ih

I_il

Low level input

High level input

Leakage current

Low level output

High level output

0.3*V_dd

V

0.7*V_dd

V

V_il=0V

-1

1

uA

V

I_ih

V_ih=V_dd, V_dd=5.4V

I_ol=2mA

1

V_ol

V_oh

0.4

I_oh=-2mA

V_dd-0.4

V

AC characteristic

symbol parameter

remark

min

typical

max

Unit

f_ref

PLL frequency

frequency

9

10

11

MHz

433 MHz band,2.5KHz step

868 MHz band,5KHz step

915 MHz band,7.5KHz step

430.24

860.48

900.72

439.7

5

f_LO

(10MHz crystal

used)

MHz

879.5

1

929.2

7

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RFM12B

Datasheet REV2.0

frequency

(9MHZ crystal

used)

433 MHz band,2.5KHz step

868 MHz band,5KHz step

915 MHz band,7.5KHz step

387.22

774.43

810.65

395.7

6

f_LO

MHz

791.5

6

836.3

4

frequency

(11MHZ crystal

used)

433 MHz band,2.5KHz step

868 MHz band,5KHz step

915 MHz band,7.5KHz step

473.26

946.53

990.79

483.7

3

f_LO

MHz

967.4

6

1022.

2

BW

Receiver

mode 0

60

67

75

bandwidth

mode 1

120

180

240

300

360

134

200

270

350

400

30

150

225

300

375

450

mode 2

KHz

mode 3

mode 4

mode 5

t_lock

PLL lock time

After 10MHz step hopping, frequency

error <10 kHz

us

With a running crystal

oscillator

PLL startup time

200

300

tst, P

BR

Data rate

With internal digital demodulator

With external RC filter

BER 10^-3, BW=134KHz,BR=1.2kbps, 433MHz band

0.6

115.2

256

kbps

BR_A

-109

-100

BER 10^-3, BW=134KHz,BR=1.2kbps, 868MHz band

BER 10^-3, BW=134KHz,BR=1.2kbps, 915MHz band

P_min

sensitivity

dBm

-105

0.8*

df_FSK

±5

-100

AFC_rangeAFC working

range

df_FSK: FSK deviation in the received

signal

RS_A

RSSI accuracy

RSSI range

ARSSI filter

RSSI

dB

nF

dB

RS_R

46

C_ARSSI

RS_STEP

1

6

programmable

step

RS_RESP

DRSSI response

time

RSSI output high after valid ,

CARRSI=5nF

500

us

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RFM12B

Datasheet REV2.0

AC characteristic(Transmitter)

symbol parameter

remark

min

typical max Unit

5

433MHz band

868MHz band

915MHz band

Selectable in 3 dB

steps

3

P_max

P_out

C_o

Max. available output power

Typical output power

dBm

2

4

2

P_max-21

P_maxdbm

Output capacitance

(set by the automatic antenna

tuning circuit)

In low bands

In high bands

2

2.6

2.7

3.2

3.3

pf

2.1

Q_o

Quality factor of the output

capacitance

In low bands

13

8

15

10

17

In high bands

12

L_out

Output phase noise

100 kHz from carrier

1 MHz from carrier

Via internal TX data

register

-80

-103

172

dbc/HZ

kbps

BR_TX

BRA_TX

df_fsk

FSK bit rate

TX data connected to the

FSK input

FSK bit rate

256

240

kbps

FSK frequency deviation

Programmable in 15

kHz steps

15

kHZ

AC characteristic(Turn-on/Turnaround timings)

symbol

parameter

Crystal oscillator

startup time

Transmitter

time

remark

min typical max Unit

T_st

Crystal ESR < 100

1

5

ms

turn-on

Synthesizer

oscillator on with 10 MHz step

Synthesizer off, crystal

oscillator on with 10 MHz step

Synthesizer and crystal

off,

crystal

250

us

T_{tx_XTAL_ON}

Receiver turn-on time

T_{rx_XTAL_ON}

Transmitter

–

Receiver turnover time

oscillator on during TX/RX

change with 10 MHz step

150

us

T_{tx_rx_SYNT_ON}

Receiver

–

Synthesizer

and

crystal

Transmitter turnover

time

oscillator on during RX/TX

change with 10 MHz step

Programmable in 0.5 pF steps, 8.5

tolerance+/- 10%

us

pf

T_{rx_tx_SYNT_ON}

C_xl

Crystal load

16

capacitance

t_POR

Internal POR timeout

After V_ddhas reached 90% of

final value

100

ms

t_PBt

Wake-up timer clock

period

Calibrated every 30 seconds

0.96

1.05 ms

C_{in, D}

t_{r, f}

Digital input apacitance

Digital output rise/fall time

2

pf

15pF pure capacitive load

10

ns

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RFM12B

Datasheet REV2.0

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

Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency

deviation =45KHZ（matches with RFM12）in free open area

Receiver bandwidth=67KHz,data rate =1.2kbps,Transmitter frequency

deviation =45KHZ（matches with RFM12）in free open area

868MHz band

915MHz band

SGS Reports

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RFM12B

Datasheet REV2.0

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RFM12B

Datasheet REV2.0

Mechanical Dimension

（units in mm）

SMD PACKAGE（S1）

SMD PACKAGE（S2）

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RFM12B

Datasheet REV2.0

DIP PACKAGE（D）

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RFM12B

Datasheet REV2.0

Module Model Definition

model=module type+operation band+module package type+ core chip package type

RFM12B – 433 D P

module type operation band module package type core chip package type

example：

1，RFM12B-433D : RFM12B module at 433MHz band, DIP module, die chip.

2，RFM12B-433DP : RFM12B module at 433MHz band, DIP module, package chip.

3，RFM12B-868S1 : RFM12B module at 868MHZ band, SMD module, thickness at 4.2mm,die chip.

4，RFM12B-868S1P: RFM12B module at 868MHZ band, SMD module, thickness at 4.2mm, package chip.

5，RFM12B-915S2 : RFM12B module at 915MHZ band, SMD module, thickness at 2.2mm,die chip.

6，RFM12B-915S2P: RFM12B module at 868MHZ band, SMD module, thickness at 4.2mm, package chip.

Module model

operation band

433MHz

868MHz

915MHz

module package type

DIP

core chip package type

Die

RFM12B-433D

RFM12B-433DP

RFM12B-433S1

RFM12B-433S1P

RFM12B-433S2

RFM12B-433S2P

RFM12B-868D

RFM12B-868DP

RFM12B-868S1

RFM12B-868S1P

RFM12B-868S1

RFM12B-868S1P

RFM12B-915D

RFM12B-915DP

RFM12B-915S1

RFM12B-915S1P

RFM12B-915S2

RFM12B-915S2P

DIP

16pin TSSOP

Die

SMD, thickness at 4.2mm

SMD, thickness at 2.2mm

DIP

16pin TSSOP

Die

16pin TSSOP

Die

DIP

16pin TSSOP

Die

SMD, thickness at 4.2mm

SMD, thickness at 2.2mm

DIP

16pin TSSOP

Die

16pin TSSOP

Die

DIP

16pin TSSOP

Die

SMD, thickness at 4.2mm

SMD, thickness at 2.2mm

16pin TSSOP

Die

16pin TSSOP

All RFM12B module model and description

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RFM12B

Datasheet REV2.0

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

HOPE MICROELECTRONICS CO.,LTD

Add:4/F, Block B3, East Industrial Area, intellectual property rights of Hope Microelectronics or third parties.

Huaqiaocheng, Shenzhen, Guangdong, The products described in this document are not intended for use in

China

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.

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Email:

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trade@hoperf.com

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型号：	RFM12B-915S1P
厂家：	ETC
描述：	UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE ISM频段
文件：	总11页 (文件大小：418K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RFM12B-915S1P [ETC]

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