RFM12B Datasheet, PDF (2/10 Pages) List of Unclassifed Manufacturers – UNIVERSAL ISM BAND FSK TRANSCEIVER MODULE

Typical Application：
• Remote control
• Remote sensor
• Wireless data collection
• Home security system
• Toys
• Tire pressure monitoring system
Pin Definition：
SMD
RFM12B
Datasheet REV1.2
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
V_dd
Positive power supply
V_in
All pin input level
minimum
maximum
Unit
-0.5
6.0
V
-0.5
Vdd+0.5
V
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