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The +3.3VDC, +12VDC and -12VDC inputs are required only for expansion
Note:
modules that require these voltages.
P
R
OWER
EQUIREMENTS
The EPM-14 requires only +5 volts (±5%) for proper operation. The voltage required for the
RS-232 ports are generated with a DC/DC converter. Low-voltage supply circuits provide power
to the CPU and other on-board devices.
The exact power requirement of the EPM-14 depends on several factors, including peripheral
connections, type and number of expansion modules, and attached devices. For example, driving
long RS-232 lines at high speed can increase power demand.
L
B
ITHIUM
ATTERY
To prevent shorting, premature failure or damage to the lithium battery, do not
Warning!
place the board on a conductive surface such as metal, black conductive foam or
the outside surface of a metalized ESD protective pouch. The lithium battery may
explode if mistreated. Do not recharge, disassemble or dispose of in fire. Dispose
of used batteries promptly.
Normal battery voltage should be at least 3.0V. If the voltage drops below 3.0V, contact the
factory for a replacement (part number HB3/0-1). The life expectancy under normal use is
approximately 10 years.
CPU
The Geode LX 800 microcontroller has a 32-bit, low-voltage AMD x86 microprocessor at its
core. The maximum clock rate is 500 MHz actual, with 800 MHz (Celeron equivalent)
performance. The LX 800 features 64 kb of L1 cache, 128 kb of L2 cache, DDR SDRAM
support, and an integrated display controller. The CPU has a typical power consumption of 1.6W.
System RAM
The EPM-14 has one soldered-on DDR memory module with the following characteristics:
Size
Voltage
Type
CMOS settings default to DDR 333 MHz. Settings to DDR 400 MHz are available,
Note
but VersaLogic only guarantees operation at the default settings.
EPM-14 Reference Manual
256 MB
2.6V
PC2700 compatible (DDR 333 MHz)
System Features
22
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