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FUTABA 9Z
V
B.4. CAMPAC Pin-out Information
It is important to note that CAMPAC Pin-out is reversed from the normal layout you
might expect with Pin 1 on the right hand side (see Figure 81). Also note that the
communication protocol used is I2C.
Figure 81 CAMPAC Pin-Out (Note: Reversed pin numbering)
The CAMPAC Pin-out configuration is:
Pins 7 & 6 = These are directly tied together in the radio and are connected to Ground.
Pins 5 & 4 = These are tied together in the radio and are connected to +5 volts.
Pin 3 = Serial Data clock
Pin 2 = Address / Data IO line
Pin 1 = Unknown (see Note below)
Note: Be careful not to short this Pin 1! It probably enables/disables write protect on the
built in EPROM. This would allow Futaba to put the latest code into a radio without
replacing the surface mounted (SIP) EPROM.
WARNING: THE INFORMATION IN THIS MANUAL IS FOR INFORMATION PURPOSES ONLY AND MAY BE INCORRECT, CAUSE DAMAGE
TO YOUR RADIO OR INJURY TO YOURSELF AND OTHERS. IF YOU USE THIS MANUAL YOU DO SO SOLEY AT YOUR OWN RISK.
THE UNOFFICIAL WORKSHOP MANUAL
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