I/O Pins - Sierra Wireless Octave FX30S User Manual

I/O Pins

You can use the I/O pins as:
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•
•
•
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Note: The I/O pin functionality is programmable in Legato applications.
Digital Input
Digital input is available on I/O 1, I/O 2, and I/O 3 on the power connector.
Note: To use I/O 3 as a digital Input, GPIO56 (that drives I/O 3 when used as a digital output) must
be low.
You can connect any of these pins to a digital input to detect the state of a digital sensor
or pulse counter.
Figure 2-19: Digital Input
Note: When using a digital input, the pull-up should be Off.
Table 2-2: Digital Input Voltage Ranges
Pull-up State Normal
Off Low -33.0 V
High +3.0 V
Rev. 5 September 2020
Digital inputs
(See Table 2-2 on page 27 and
High side pull-ups/dry contact switch inputs
(See Figure 2-20 on page 28.)
Analog inputs
(See Table 2-3 on page 29 and
Low side current sinks
(See Figure 2-23 on page 29.)
Digital outputs/open drains
(See Table 2-4 on page 30 and
Gateway
FX30
V V
in
Internal pull-up
Internal Pull-up
Off
V 3.0 V
High
Normal Normal Input
Min. Max. Impedance
+1.0 V
>150 kOhm
+33.0 V
Figure 2-19 on page 27.)
Figure 2-22 on page 29.)
Figure 2-24 on page 30.)
V or 3.3 V*
in
I/O 1, I/O 2, I/O 3
10 kResistor
Digital input
Off
Extended
Min.
-36.0 V
—
27
Installation and Startup
Extended Leakage Current in
Max. Extended Range
—
1 mA max.
+36.0 V
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