10
TD-000477-01-A
GPIO
Examples
Connector Pin
GPIO # and
Function
Specifications
1
3.3 V
100 mA max (power cycle to reset current limiting IC)
2
GPIO 1
5mA in/out, 3.3V max, 127 Ohm resistor in series
3
GPIO 2
5mA in/out, 3.3V max, 127 Ohm resistor in series
4
GND
Ground
5
GPIO 3
5mA in/out, 3.3V max, 127 Ohm resistor in series
6
GPIO 4
5mA in/out, 3.3V max, 127 Ohm resistor in series
7
GND
Ground
8
GPIO 5
18mA in/out max, 3.3V max, 127 Ohm resistor in series
9
RELAY NO
Relay Normally Open
10
RELAY COM
Relay Common
11
RELAY NC
Relay Normally Closed
12
GND
Ground
13
GPIO 6
18mA in/out max, 3.3V max, 127 Ohm resistor in series
14
GPIO 7
18mA in/out max, 3.3V max, 127 Ohm resistor in series
15
GND
Ground
16
GPIO 8
18mA in/out max, 3.3V max, 127 Ohm resistor in series
— Figure 23 —
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
— Figure 24 —
Ground
Button or Contact Closure
Potentiometer
Q-SYS-Powered LED
+3.3V
GPIO
Analog In
Ground
GPIO
Ground
Works for LEDs up to 18 mA.
Current is limited in the GPIO circuit by
a 127
Ω
resistor in series.
GPIO 5-8
Ground
10 k
Ω