PCM-UIO48A-G Universal 48-Point I/O with Interruptible Event Sense PC/104 MODULE FEATURES l Supports 48 digital I/O lines l Each line is capable of: • Bidirectional operation • Input, Output or Output with Read back • 12mA Sink Current l Generates an interrupt on signal change-of-state: • Supports 24 event sense lines • Software selectable edge polarity for each line • Software enabled interrupt for each line • Change-of-state latched for each line l Write-protection mask register for each 8-bit port l Compatible with industry standard I/O racks l Fused +5V logic supply for I/O modules l 8- or 16-bit PC/104 interface l +5 volt only operation l RoHS compliant product o o l Pictured: PCM-UIO48A-G-16 Extended temperature range: -40 C to +85 C The PCM-UIO48A-G is a highly-versatile PC/104 input/ output module providing 48 lines of digital I/O. The major feature of this card is its ability to monitor 24 lines for both If the port is used as input only, then the corresponding rising and falling digital edge transitions, latch them and output port bit must be cleared. Each output channel is then interrupt the host processor notifying that a change- latched and has an open collector driver (with a pull-up of-input status has occurred. This is an efficient way of sig- resistor) capable of sinking 12mA of current. This allows naling the CPU of real-time events without the burden of direct control of up to 48 opto-isolated signal conditioning polling the digital I/O points. modules to a single card for high density I/O support. This PC/104 module is also compatible with industry Event Sense Operation - Each WS16C48 ASIC supports standard isolated I/O signal conditioning modules from 24 event sense lines to generate an interrupt when an event Opto-22, Gordos, and others. This module is RoHS- occurs. This means that 24 lines of the PCM-UIO48A-G compliant. can sense a positive or negative transition on the input. Transition polarity is programmable and enabled on a bit- FUNCTIONAL CAPABILITY by-bit basis. Each lines’ transition is latched by the event so that even short duration pulses will be recognized. An PC/104 Interface - The PCM-UIO48A-G is a PC/104 interrupt ID register is maintained for each line for writing compatible stackthrough card which is I/O port mapped on more efficient Interrupt Service Routines. any even 16-byte boundary. Interrupts - The PCM-UIO48A-G can generate a system Parallel I/O Controller - WinSystems has designed interrupt request which can be routed via jumper to IRQ a WS16C48 Universal I/O controller ASIC to support channels 2 - 7 on the 8-bit or the additional five interrupt the various input/output and interrupt configurations. The channel inputs on the 16-bit version. WS16C48 supports 48 digital I/O lines addressed through six contiguous registers. A six-bit Write Mask register I/O Connectors - The signals from the WS16C48 allows the user to disable Writes on a byte basis to config- are wired to two 50-pin connectors, J1 and J2. Each ure the group as a “Read Only” port. connector supports 24 data lines which are alternated with 24 ground lines for reduced noise and crosstalk. Each I/O line is individually programmable for input, out- Also, each connector has a 1A fuse on the +5 volt source put, or output with Read back operation. The input lines are to supply logic power for I/O module rack. connected so the current status of its output port can be read from the corresponding input port (Read back). The PCM-UIO48A-G’s pinout is compatible with the industry standard 4 to 24 position I/O module mounting racks (Opto-22, Crydom, Gordos, etc.). The racks accept AC and DC modules which optically isolate the computer from electrical transients and excessive voltages from the field devices. Four foot, 50 conductor ribbon cables such as the WinSystems’ CBL-115-4 and CBL-129-4 connects the PCM-UIO48A-G to one I/O rack. Two cables are required to fully utilize this card, one for each rack. The cable will interface directly to a 4, 8, 16 or 24 module rack. RoHS Compliant - This product is designed to meet the Directive on the Restriction of the use of certain Hazardous Substances in electrical and electronic equipment (RoHS) European Union directive 2002/95/EC. SPECIFICATIONS Electrical PC/104 Bus: 8- or 16-bit stackthrough Parallel Interface:48 I/O lines, TTL compatible PCM-UIO48A-G BLOCK DIAGRAM Power Requirements ± Vcc = +5V 5% at 12mA (excluding rack power with no loads on the outputs) Pin Description Pin Description Mechanical 1 IO23 2 Ground 3 IO22 4 Ground Dimensions: 3.6” x 3.8” (90mm x 96mm) 5 IO21 6 Ground 7 IO20 8 Ground Connectors 9 IO19 10 Ground 11 IO18 12 Ground Digital I/O: J1 - J2, 50-pin dual 0.100” grid 13 IO17 14 Ground Jumpers: 0.025” square posts 15 IO16 16 Ground 17 IO15 18 Ground 19 IO14 20 Ground Environmental 21 IO13 22 Ground o o Operating Temperature: -40 C to +85 C 23 IO12 24 Ground 25 IO11 26 Ground 27 IO10 28 Ground ORDERING INFORMATION 29 IO9 30 Ground 31 IO8 32 Ground PCM-UIO48A-G-8 48 channel Universal I/O module 33 IO7 34 Ground 35 IO6 36 Ground with 8-bit PC/104 interface 37 IO5 38 Ground PCM-UIO48A-G-16 16-bit PC/104 interface version 39 IO4 40 Ground CBL-115-4 4-ft. ribbon to Opto module rack, 41 IO3 42 Ground 43 IO2 44 Ground 50-pin socket on one end and edge 45 IO1 46 Ground termination on the other, 47 IO0 48 Ground non-RoHS compliant product 49 +5V 50 Ground CBL-129-4 4-ft. ribbon cable, 50-pin. Both ends J1 and J2 - Rack I/O Connector Pin-Out have a socket termination, non-RoHS compliant product WinSystems reserves the right to make changes to products and/or documentation without further notification. Product names of other companies may be trademarks of their respective companies. 715 Stadium Drive • Arlington, Texas 76011 • (817) 274-7553 • http://www.WinSystems.com