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DIGITAL-LOGIC AG
4
D
ETAILED
This system has a system configuration based on the ISA architecture. Check the I/O and the Memory map
in this chapter.
4.1 Power Requirements
The power is connected through the ISA Bus connector, or the PC/104 Power connector, or the separate
power connector on the board. The supply uses only +5V and ground connection. For backplane supply and
the Flash BIOS operation, the user has to connect the 12V (only for LCD port).
Warning:
Tolerance of 5 V supply:
ATTENTION:
The precise power requirements of the MICROSPACE PCC-P5 depends on a number of factors, including
what functions are present on the board and what peripherals are connected to the board's I/0 ports. For ex-
ample, AT-keyboards draw their power from the keyboard connector on the MICRO-SPACE PCC-P5 board,
and therefore add keyboard current to the total power drawn by the board from its power supply.
CPU:
Clock:
P5-133
133MHz
Suspended
HD start current:
AT-keyboard:
4.2 CPUs, Boards and RAMs
4.2.1 CPUs of this MICROSPACE Product
Proposed: Standard:
Option:
Option:
Option:
The CPU type must be defined by ordering. The switched mode voltage regulator must be tuned to the cor-
rect core voltage of the CPU and the linear 3.3V regulator may be assembled.
S
D
YSTEM
Make sure that the power plug is wired correctly before supplying power to the
board! A built-in diode protects the board against reverse polarity.
5Volt ± 5%; Power-fail signal starts at ± 10% of 5 volt nominal and generates a
reset status for the MICROSPACE PC.
With the harddisk connected to the IDE 44pin interface, the power requirement
is high. The peak current must be enough to spin up the HD-motor. The typical
spin-up current of the harddisk is 0.8 - 1.5Amp at 5V. Too little current will drop
the voltage under 5 volts for a short time. Due to this undervoltage, the system
or the harddisk stops or falters. The VGA could also be "snowy".
Memory:
no Harddisk
32 MByte
3.5 A
32 Mbyte
1.6 A
ST-9096A Seagate 2,5" 80 MBytes
INTEL P5 from 100MHz to 200MHz (single 3.3V switched)
INTEL MMX P5
(dual voltage , switched 2.9V , linear 3.3V I/O)
AMD K6
(dual voltage , switched 2.9V , linear 3.3V I/O)
Cyrix M2
(dual voltage , switched 3.1V , linear 3.3V I/O)
21
ESCRIPTION
HD-500MByte:
4.0 A
ca. 0.8 Amp.
ca. 10 mA
PCCP5 Manual V2.3
HD-PowerUp:
5 A
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