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54 PC/104-Plus – CPU-1461 Module
A.1 Electrical and Environmental Specifications
The following section provides tables and illustrations showing the electrical, mechanical and environmental
specifications.
You will find:
¾ Operating Characteristics
Electrical operating characteristics
Backup Battery characteristics
Operating temperature Range
¾ Absolute maximum ratings
¾ MTBF
Operating Characteristics
Electrical Operating Characteristics
Recommended power supply: VDD= +5V (with tolerance +/-5%)
Power consumption: 13.0 W typical (Pentium III 800MHz, 256MB).
Battery current draw (board off without any device on the SSD): 7
μA.
Note. This module is not warranted against damage caused by overheating due to improper or
insufficient cooling or airflow.
Backup Battery Characteristics
There is no configuration data saved by the BIOS into the CMOS Real Time Clock. Therefore, the CPU
module does not need a battery, except in the case of applications needing to retrain the date and time at
power-off.
Battery Voltage: VBAT= 3.6V (range = 3V to 3.9V)
Note. Setup data is stored into the BIOS Flash EPROM; it is therefore impossible to lose the setup
data due to a lack of backup-battery supply.
Operating Temperature Range
For proper operation of the module, the ambient air temperature must remain inside this range:
0°C to +50°C (+32°F to +122°F).
The +50°C test was made at a constant temperature in a climatic chamber.