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3. Theory of Operation
The EPC-26A/27 is a PC/AT compatible processor module. The standard functions
of the PC architecture are embodied in the PicoPower Redwood chip set.
3
3
Processor and Coprocessor
The EPC-27 uses the 100 MHz 208-pin, 3.3V Intel486 DX4 SL Enhanced CPU
which contains an integrated math coprocessor.
The EPC-26A uses the 50 MHz
DX2 in a similar configuration.
Memory
There is no base memory soldered to the EPC. Memory must be configured using a
single SIMM module. See the figure below.
Top
SIMM Socket
Rear
Figure 3-1. SIMM Socket Location.
WARNING: Many of the components used in this EPC are designed to operate at
3.3V. Specifically this includes the CPU, the memory, and the PC chip set. The user
should be careful not to place the SIMM memory modules that are delivered in this
product in the socket of another product that uses 5V memory devices. This could
cause permanent damage to the memory devices.
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