285Alvium USB Cameras User Guide V4.6.1
Camera interfaces
Input levels
The GPIOs can be connected directly to the system controlling the camera for
voltages up to 5.5 VDC. An external resistor is not necessary.
Output levels
NOTICE
Damage to the camera by high input voltage
Exceeding maximum input voltage can damage the camera.
Keep maximum input voltage below 5.5 VDC.
Parameter Value
U
in
(low) -0.3 to 0.8 VDC
U
in
(high) 2.0 to 5.5 VDC
Undefined levels 0.8 to 2.0 VDC
Table 147: GPIOs as input, voltage levels
NOTICE
Damage to the camera by high output current or voltage
The camera can be damaged when connected to a device that exceeds the
specified maximum current or voltage. Consider maximum values:
• Maximum current = 12 mA per output
• Maximum Out VCC = 3.3 VDC
Parameter Value
External output voltage U
out
(low) 0 to 0.4 VDC
External output voltage U
out
(high) 2.4 to 3.3 VDC
Undefined levels 0.4 to 2.4 VDC
Maximum external output voltage 3.3 VDC
Maximum output current 12 mA
Table 148: GPIOs as output, current and voltage levels
Output voltage for U
Out
(high) = On state
The voltage level in the On state depends on the load current. Higher currents yield
lower voltage.
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