RFM70 V1.0
3 Pin Information
Figure 2 RFM70 pin assignments (top view)
Name
Pin Function
Description
GND
Ground
Ground (0 V)
VDD
CE
Power
Power Supply (1.9 V to 3.6 V DC)
Digital Input
Digital Input
Digital Input
Digital Input
Digital Output
Digital Output
Chip Enable Activates RX or TX mode
SPI Chip Select, Active low
SPI Clock
CSN
SCK
MOSI
MISO
IRQ
SPI Slave Data Input
SPI Slave Data Output with tri-state option
Maskable interrupt pin, Active low
Table 1 RFM70 pin functions
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