|
|
PDF RFM42B Data sheet ( Hoja de datos )
| Número de pieza | RFM42B | |
| Descripción | (RFM42B / RFM43B) ISM TRANSMITTER | |
| Fabricantes | HOPERF | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RFM42B (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
RFM42B/43B ISM TRANSMITTER
RFM42B/43B
V1.0
Features
Frequency range
433/868/915MHz ISM bands
Output Power Range
+1 to +20dBm (RFM42B)
–8 to +13dBm (RFM43B)
Low Power Consumption
RFM42B
85 mA @ +20 dBm
RFM43B
30 mA @ +13 dBm
Data Rate = 0.123 to 256 kbps
FSK, GFSK, and OOK modulation
Power Supply = 1.8 to 3.6 V
Ultra low power shutdown mode
Wake-up timer
Integrated 32 kHz RC or 32 kHz
XTAL
Integrated voltage regulators
Configurable packet handler
TX 64 byte FIFO
Low battery detector
Temperature sensor and 8-bit ADC
–40 to +85 °C temperature range
Integrated voltage regulators
Frequency hopping capability
On-chip crystal tuning
14-PIN DIP & 16-PIN SMD package
Low cost
Power-on-reset (POR)
Applications
Remote control
Home security & alarm
Telemetry
Personal data logging
Toy control
Wireless PC peripherals
Description
Remote meter reading
Remote keyless entry
Home automation
Industrial control
Sensor networks
Health monitors
HopeRF's RFM42B/43B are highly integrated, low cost,433/868/915MHZ
wireless ISM transmitters module.
The RFM42B/43B offers advanced radio features including adjustable power
output levels of –8 to +13dBm on the RFM43B and +1 to +20dBm
on the RFM42B.Power adjustments are made in 3dB steps.The RFM42B/43B's
high level of integration offers reduced BOM cost while simplifying the overall
system design. The RFM42B’s Industry leading +20dBm output power ensures
extended range and improved link performance.
Additional system features such as an automatic wake-up timer, low battery
detector, 64 byte TX FIFO, and automatic packet handling reduce overall current
consumption and allow the use of lower-cost system MCUs. An integrated
temperature sensor, general purpose ADC, power-on-reset (POR), and GPIOs
further reduce overall system cost and size.
The direct digital transmit modulation and automatic PA power ramping ensure
precise transmit modulation and reduced spectral spreading ensuring compliance
with global regulations including FCC,ETSI regulations.
An easy-to-use calculator is provided to quickly configure the radio settings,
simplifying customer's system design and reducing time to market.
RFM42B/43B
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
1
Free Datasheet http://www.datasheet4u.com/
1 page  
RFM42B/43B
Table 2. Synthesizer AC Electrical Characteristics
Parameter
Symbol
Conditions
Min Typ Max Units
Synthesizer Frequency
Range—RFM42B/43B
FSYN
433MHz band
868MHz band
915MHz band
413 453 MHz
848 888 MHz
901 929 MHz
Synthesizer Frequency
Resolution
Reference Frequency
Input Level
Synthesizer Settling Time
Residual FM
Phase Noise
FRES-LB
FRES-HB
fREF_LV
tLOCK
FRMS
L(fM)
433MHz Band
868/915MHz Band
When using external reference signal
driving XOUT pin, instead of using
crystal. Measured peak-to-peak (VPP)
Measured from exiting Ready mode with
XOSC running to any frequency.
Including VCO calibration.
Integrated over 250 kHz bandwidth
(500 Hz lower bound of integration)
F = 10 kHz
F = 100 kHz
F = 1 MHz
F = 10 MHz
— 156.25
— 312.5
0.7 —
— 200
—2
— –80
— –90
— –115
— –130
— Hz
— Hz
1.6 V
— µs
4 kHzRMS
— dBc/Hz
— dBc/Hz
— dBc/Hz
— dBc/Hz
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
RFM42B/43B
3. Controller Interface
3.1. Serial Peripheral Interface (SPI)
The RFM42B/43B communicates with the host MCU over a standard 3-wire SPI interface: SCLK, SDI, and nSEL.
The host MCU can read data from the device on the SDO output pin. A SPI transaction is a 16-bit sequence which
consists of a Read-Write (R/W) select bit, followed by a 7-bit address field (ADDR), and an 8-bit data field (DATA)
as demonstrated in Figure 1. The 7-bit address field is used to select one of the 128, 8-bit control registers. The
R/W select bit determines whether the SPI transaction is a read or write transaction. If R/W = 1 it signifies a WRITE
transaction, while R/W = 0 signifies a READ transaction. The contents (ADDR or DATA) are latched into the
RFM42B/43B every eight clock cycles. The timing parameters for the SPI interface are shown in Table 9. The
SCLK rate is flexible with a maximum rate of 10 MHz.
SDI
SCLK
nSEL
MSB
Address
Data
LSB
RW A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 xx xx RW A7
Figure 1. SPI Timing
Table 9. Serial Interface Timing Parameters
Symbol
Parameter
Min (nsec)
tCH Clock high time
tCL Clock low time
tDS Data setup time
tDH Data hold time
tDD Output data delay time
tEN Output enable time
tDE Output disable time
tSS Select setup time
tSH Select hold time
tSW Select high period
40
40
20
20
20
20
50
20
50
80
SCLK
tSS
SDI
SDO
nSEL
tEN
Diagram
tCL tCH tDS tDH tDD
tSH tDE
tSW
To read back data from the RFM42B /43B, the R/W bit must be set to 0 followed by the 7-bit address of the register
from which to read. The 8 bit DATA field following the 7-bit ADDR field is ignored n the SDI pin when R/W = 0. The
next eight negative edge transitions of the SCLK signal will clock out the contents of the selected register. The data
read from the selected register will be available on the SDO output pin. The READ function is shown in Figure 2.
After the READ function is completed the SDO pin will remain at either a logic 1 or logic 0 state depending on the
last data bit clocked out (D0). When nSEL goes high the SDO output pin will be pulled high by internal pullup.
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet RFM42B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RFM42B | (RFM42B / RFM43B) ISM TRANSMITTER | HOPERF |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |