3
Expansion Connector Cable Details
The maximum length for the expansion connector cables is as follows:
General Purpose IO, TTL, Serial, etc = 6” recommended maximum, 8” absolute maximum
Ethernet, high-speed IO, etc = 3” recommended maximum, 4” absolute maximum
The following table provides example part numbers for the expansion cables:
Description
Mfg
Mfg PN
Digi-Key Pn
3” 50-pin 0.5mm
Molex
21020-7650
WM10231-ND
6” 50-pin 0.5mm
Molex
21020-0548
WM10223-ND
Note: These lengths are only recommendations. The actual lengths utilized will be dependent on the expansion board
circuitry, layouts and general environment of the application. It is up to the customer to test and validate the functional
operation and use of the expansion connectors.
DC Power Input – P4
The uEZGUI-EXP1 supports a 7VDC-24VDC 1A (min) Power Supply. The connector is 2.1mm with center positive.
Pin Number
Description
1
7VDC to 24VDC, +/- 10%, 1.0A (min)
2
Power Supply Ground
USB Device – P1
The UEZGUI-EXP1 Board includes one USB Device Interface allowing the unit to be connected to a USB Host, such as a
PC. Through this connection, the uEZGUI represents a peripheral to the USB Host. The operational mode of the port is
dependent on the software utilized (i.e. Mass Storage or Human-Interface).
Note: The USB Device connector of the Expansion Board is connected in parallel to the USB Device connector of the
uEZGUI Main board.
To avoid damage or improper operation, do not connect both of these at the same time
.
The UEZGUI-EXP1 Board may also be powered via the USB Device connector. Care must be taken to not overload the
USB Host since 500mA is the maximum current allowable via USB.
Pin Number
Description
1
USB 5V
2
D-
3
D+
4
NC
5
Signal Ground
