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Keyboard and mouse port
The keyboard controller accepts an AT style keyboard. The mouse port is combined
with the keyboard port. The PS/2 Keyboard Mouse Cable, 8-Pin Header has a PS/2
connector for keyboard support. A "Y" cable, available at any computer store,
attaches to the Keyboard Mouse Cable and provides mouse support.
Real time calendar/clock with battery backup
The real time clock is fully AT compatible. An optional off-card battery powers the
real time clock when the 5 volt supply is removed.
Setup information stored in Flash for high reliability
Loss of Setup data is serious in industrial applications. Most PCs store Setup
information in battery-backed CMOS RAM. If the battery fails or is replaced
during routine maintenance, this information is lost. Without a keyboard and
monitor in embedded applications, time consuming re-initialization is required.
The XE–700 SBC stores the Setup information in serial EEPROM.
User-available EEPROM
An EEPROM has 1024 words available to the user. Software routines to use this
available memory come with the XE–700 SBC.
Watchdog timer added for safety
The watchdog timer resets the system if the program stops unexpectedly. The
watchdog is enabled, disabled and strobed under software control; it can also be
enabled or disabled in Setup. The time-out period is programmable for 1, 10 or 60
seconds.
Hardware reset
A hardware reset ensures complete reset of the system and all attached
peripherals. A hardware reset can be done by any of the following methods:
An expired watchdog timer cycle
Depressing the reset switch
Cycling power
Power supervisor reset
5 Volt only operation lowers system cost
5V ±5%
±12V supplied to PC/104 connector from the power connector; not required for
XE–700 SBC operation
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