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NEW PRODUCT NEWS—edited by Harv Weiner

PC/104- compatible Digital I/O Module

The PCM-UIO96A is a versatile 96-point digital I/O interface with interruptible event sense. An important feature of this PC/104 compatible card is that it can monitor both rising and falling digital edge transitions, latch them, and signal the host processor that a change of input status has occurred. This allows signaling the CPU of real-time events without continuously polling the 96 digital I/O points.

The module is based upon two WinSystems WS16C48 Universal I/O Controller ASICs that support the various input/output and interrupt configurations. Each I/O line is individually programmable for input, output, or output with read-back operation. Forty-eight of the lines feature "Event Sense", the controller's ability to monitor each input line and generate an interrupt whenever an event occurs. Transition polarity is programmable and enabled on a bit-by-bit basis. Each line's transition is latched so that even short duration pulses will be recognized. An interrupt ID register is maintained for each line for writing more efficient Interrupt Service Routines.

Each output channel is latched and is capable of sinking 12mA of current. This allows direct control of up to 96 industry standard opto-isolated signal conditioning modules from Opto-22, Gordos, etc. by a single PCM-U1096A card. The input can source 0.4 mA per channel.

The PCM-UIO96A measures 3.6" x 3.8" (90mm x 96mm), weighs only 7 ounces, and is fully PC/104-compliant. It is ideal for harsh industrial environments because it combines a low power consumption of 120 mW (no loads) and a wide operational temperature range from ý40ý to +85ý C. The module requires only +5 volts.

The PCM-UIO96A sells for $225

WinSystems, Inc.
(817) 274-7553
Fax: (817) 548-1358
www.winsystems.com

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