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POWER CONSIDERATIONS
8.
The PC/104-PCMCIA-1 is a +5V-only board. PCMCIA cards used in the socket could need an
additional voltage (+12V), which is not generated onboard the PC/104-PCMCIA-1. The
power is supplied through power pins on the PC/104 bus connector.
Power Pins of the PC/104 Bus
8.1
Every power pin on the PC/104 bus connectors is limited to a maximum current of 1A per
pin. The following limitations apply whenever a stack of PC/104 boards is supplied through
the PC/104 bus connector:
Power
VCC (+5V)
+12V
-12V
-5V
GND
Modules on the PC/104 bus consuming a higher supply current must provide power supply
through an additional connector.
Power Pins of the PCMCIA Socket
8.2
For used PCMCIA sockets, each power pin has a limitation of 500mA (which is also the
specification for the PCMCIA card standard). Therefore PCMCIA cards plugged into the
sockets of the PC/104-PCMCIA-1 are not allowed to exceed the following limitations:
Power
CDVCC
CDVPP1
CDVPP2
GND
PC/104-PCMCIA-1 User's Guide
Number of Pins
Max. Current
4
2
2
2
8
Number of Pins
Max. Current
2
1
500mA
1
500mA
4
13
4A
2A
2A
2A
8A
1A
2A
Power Considerations
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