The following specifications apply to the board level versions of the USB uEye LE. The inputs/outputs mentioned are not accessible in the housing versions.

10-pin plated-through holes (PCB version only)

Pin	Description	Fig. 516: USB uEye LE PCB version - I/O connector (PCB back view)
1	USB power supply (VCC) 5 V
2	USB ground (GND)
3	Trigger input without optocoupler (+)
4	Flash output without optocoupler (+)
5	Power supply of the internal voltage transformer 3.3 V or 3.0 V*
6	USB ground (GND)
7	General Purpose I/O (GPIO) 1
8	General Purpose I/O (GPIO) 2
9	I2C bus clock signal (internal 2k2 pull-up to VINT*)
10	I2C bus data signal (internal 2k2 pull-up to VINT*)

* This voltage depends on the supply voltage required for the sensor used (see table below)

Attention: The pins 1 and 5 are voltage output of the camera. Do not apply an external voltage on these outputs thus this may be destroy the camera.

The 10 pin I/O connector of the USB uEye LE can be equipped with a 2 x 5-pin connecting plug with a 2.54 mm (0.1") lead spacing. IDS Imaging Development Systems GmbH shall not be liable for any damage to the camera or connected devices arising from installation of the connecting plug.

Note: The maximum length of the I/O cable is 30 m. The cable must be shielded.

Maximum current

If the 3.3 V and the 5 V power supplies are used simultaneously, please observe that the maximum power available from the USB bus is 2.5 W. Choose the overall current in such a way that the maximum power of 2.5 W will not be exceeded.

* This voltage depends on the supply voltage required for the sensor used (see table below)

Internal supply voltage by sensor type

I2C operation

From driver version 3.20, the I2C bus is operated with a clock frequency of approx. 400 kHz. For earlier versions, the clock frequency is 100 kHz.

Multi master mode is not allowed on the I2C bus while the USB uEye LE camera is used.