ΣYG
-
S7G2
-MDK
User’s Manual
4/5/2021
Copyright ©2021,
Future Designs, Inc
Page
19
of
26
Carrier Board Components
5.1
DC Power Input
The Touch Screen Kit utilizes a 5VDC 2.3A Power Supply. The connector is 2.1mm with
center positive.
Pin Number
Description
1
5VDC, +/
-
10%, 2.0A (min)
2
Power Supply Ground
5.2
Alternate Power Input
The CARRIER Board includes an optional alternate power input connector, J8. This connector
provides an optional input connection for the on-board DC-DC regulator.
Pin Number
Description
1
5VDC, +/
-
10%, 2.0A (min)
2
Power Supply Ground
5.3
USB Power Device
The CARRIER Board includes one USB Device Interface allowing the unit to be connected to
a USB Host, such as a PC. Through this connection, the CARRIER 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).
The CARRIER 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. The LCD
Backlight may be disabled or the brightness dimmed to facilitate this USB Powered mode. When
D1 is on it indicates a “good link” on the USB Device port. When D2 is on it indicates that the
USB Device port is enabled. D2 will also blink during re-enumeration.
Pin Number
Description
1
USB 5V
2
D-
