RFM12
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
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
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