P104-WDG-CSM Advanced Digital Logic, Inc., P104-WDG-CSM Datasheet - Page 2

• Manufacturer Part Number: P104-WDG-CSM
• Description: Pc/104-plus Watchdog Timer Status Monitor
• Manufacturer: Advanced Digital Logic, Inc.

PC/104 -Plus
tor compares an on-board temperature sensor output to a preset reference (approximately 50EC). A
status register indicates normal or high temperature and can also generate an interrupt. The tempera-
ture measurement circuit uses an on-board 8-bit A/D as the digitizer. This model also provides one gen-
eral-purpose opto-isolated input. Two digital isolated outputs are provided to control/switch external
events in response to CSM conditions. In parallel to these two isolated outputs are two non-isolated digi-
tal outputs that can sink/source up to 15mA and can drive LEDs to indicate the switched event of the
isolated outputs or simply output to another device the same digital state. A fused 5V external power pin
is provided to bias external LEDs when used with non-isolated digital outputs. A push button reset input
is also provided to directly initiate a system reset.
P104-WDG-CSMA
This advanced version builds on the P104-WDG-CSM but has all available features populated. Two un-
dedicated 8-bit A/D (Analog Inputs) with a 0-5V range can be used to measure critical system parame-
ters such as battery voltage or humidity. The fan speed control can be used in conjunction with the tem-
perature monitor to maintain internal temperatures in the enclosure. The duty cycle of fan power (+12V)
is pulse-width modulated to speed up the fan when temperature increases. If no current is detected or
the duty cycle reaches 100%, an interrupt occurs. Another advanced feature is a Security Light Sensor
used to detect if a darkened interior of the enclosure is opened letting in light. An external remote reset
through a dedicated opto-isolated digital input is provided that can allow any transition between 3-18V to
reset the computer. This reset could be triggered remotely from an RS-232 signal transition if available.
Finally, additional fused 5V and 12V pins are provided on I/O connector for powering external circuitry or
devices.
Options
An additional option of a PCI-104 version allows this board to be added to the top of a PCI-104 express
stack without mechanical interference. The P104-WDG-CSM is designed for use in both industrial/
commercial and optionally military environments of 0 to +70C and -40 to +85C, respectively. Program-
mable array logic is available on this card and many possibilities exist for special modifications to suit
unique requirements.
Software
Sample programs and source code in “C” and Pascal for DOS, and Visual Basic, Delphi and Visual C++
for Windows on CD ships with the hardware you order. Also incorporated for the P104-WDG-CSM is
support for use in most operating systems and includes a DOS, Linux, and Windows 2000/XP/VISTA
compatible software package. Third party support for watchdog timer consists of a standard dll interface
usable from most popular application programs. Linux support consists of installation files and basic
samples for programming from user level via an open source kernel driver.
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Advanced Digital Logic, Inc.; 4411 Morena Blvd., Suite 101; San Diego, CA 92117-4345
Ph. 858 490-0597 F. 858 490-0599; e-mail: [e-mail]; web:
www.adl-usa.com