User's Manual

Small Receiver Transmitter Module RFM307
Draft 29 April 11:11 10
8.0 Signals and Connections
RFM307 Pins and Signals
Pin Description
1-16,20,22-24,28,30,31
Ground connection
32
Digital Power input, regulated +2.7 – 3.3 VDC, 20mA max
29
Analog Power input, regulated +2.7 – 3.3 VDC, 20mA max
21
2.4 GHz RF antenna connection (alternate to J2)
34
Serial select input, active low, 1M pullup
19
Serial clock input
17
Serial data input
18
Serial data output
33
Interrupt output, active low, 1M pullup
35
Reset input, active low, 1M pullup
36
Sleep/TR input, 1M pulldown
37
RFIC buffered clock output
26
Gain select, 1M pulldown (reserved)
27
PA enable, active high, 1M pulldown (reserved)
J2
2.4 GHz RF antenna coax connector (alternate to pin 21)