Specifications

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1. Product Description
The EPC-21 and EPC-22 are PC/AT compatible CPU modules in a very small form
factor (3" x 5.9") based on the Intel386 SL chip set. These EPCs have been designed
to meet stringent safety and low EMI standards (UL-1950). All front panel accessible
ports have filter networks for reduced EMI and increased ESD protection.
Throughout this manual, the term EPC is used to designate both the EPC-21 and the
EPC-22. Where necessary, differences between the EPC-21 and EPC-22 are
specified separately.
Each processor module contains the following:
• The EPC-21 contains a 16 MHz Intel386 SL processor
• The EPC-22 contains a 25 MHz Intel386 SL processor and an 80387SX
math coprocessor
• The EPC-22 contains 64 Kbytes of SRAM cache
• Up to 20 MBytes of DRAM memory
• Keyboard interface
• 1 standard 9-pin DTE serial port (COM1)
• 1 RJ-45 serial port (COM2)
• Time-of-day clock with user replaceable battery
• Award BIOS
• Watchdog Timer
• EXM expansion interface (electrically similar to the 16-bit PC/AT ISA bus)