Dc power, Power requirements, Other voltages – Ampro Corporation LITTLE BOARD 5001451A User Manual
Page 25: Dc power –7, Power requirements –7 other voltages –7
Little Board P6d Module
2-7
DC Power
The power connector J10 is a 7-pin polarized connector. Refer to Table 2-3 for power connections
and Table 2-4 for mating connector information.
Caution
To prevent damage to the Little Board P6d or its power connector,
ensure the power plug is wired correctly before applying power to the
module!! See Table 2-3.
Table 2-3. Power Connector (J10)
Pin #
Signal Name
Function
1, 7
+5VDC
+5VDC ±5% input
2, 3, 6
Ground
Ground return
4
+12VDC
+12VDC ±5% input
5
+3.3VDC
+3.3V ±5% input
(Only required for some PCI expansion boards)
Table 2-4. J10 Mating Connector
Connector Type
Mating Connector
DISCRETE WIRE
MOLEX HOUSING 09-50-8073
Pins 08-52-0071
Power Requirements
The Little Board P6d module requires only +5VDC (±5%) for operation. The voltage required for
the RS232 ports is generated on-board from the +5VDC supply. An on-board low-voltage power
supply circuit provides power to low-voltage CPUs and certain other on-board components.
The exact power requirement of the Little Board P6d system depends on several factors, including
the CPU speed, the peripheral connections, and which, if any, MiniModule products or other
expansion boards are attached. For example, the keyboard draws its power from the board, and
there can be some loading from the serial, parallel, and other peripheral ports. Consult the
specifications in Chapter 3 for the basic power requirements of your model.
Other Voltages
There may be a requirement for an external +12 volt supply, depending on what peripherals you
connect to the Little Board system. For instance, +12V is required for most flat panel backlight
power supplies. You can connect a +12V supply to the Little Board module through the power
connector, J10. This will supply +12V to the ISA and PCI portions of the PC/104 expansion busses.
Similarly, you can connect -12V and -5V to the Utility Connector, to supply those voltages to both
expansion busses. Pinouts for the Utility Connector are provided in Table 2-4.