PC/104-Plus 48 or 96-Channel Digital I/O with Change-of-State

ACCES I/O Official Distributor
ACCES I/O Official Distributor
Model No:
P104-DIO-96 Series
Highlights:
  • Brand: Acces IO
  • PC/104-Plus (PCI-104 Optional)
  • 48 or 96 Channel TTL-DTL high speed digital I/O
  • Software selectable in vs. out as 8 bit and 4 bit ports
  • Emulates 4 industry standard 8255 PPIs (mode 0)
QTY:
Overview

Each I/O line of this card is buffered and capable of sourcing 32mA, or sinking 64mA. The board simulates Programmable Peripheral Interface chips (PPI) to provide a computer interface to digital I/O lines. Each PPI supports two 8-bit ports (A, B) and two 4-bit ports (Chi, Clow). Each port can be configured to function as either input or output latches. The I/O line buffers (types 74ABT240 and 74ABT245) are configured automatically by hardware logic for input or output according to the PPI Control Register direction software assignment. Outputs of the I/O buffers are pulled up through 10KO resistors to +5VDC. I/O wiring connections are via 50-pin headers on the board. This provides compatibility with OPTO-22, Gordos, Potter & Brumfield, Western Reserve Controls, etc. module mounting racks. Every second conductor of the flat cables is grounded to minimize crosstalk between signals. If needed for external circuits, +5VDC power is available on each I/O connector at pin 49. If you use this power, we recommend that you include a 1A fast blow fuse in your circuits in order to avoid possible damage to the host computer. The card occupies 32 addresses within the PCI I/O space. The base address is assigned by the system. Refer to the Option Selection Section of this manual for a detailed description.

Main Features
  • PC/104-Plus (PCI-104 Optional)
  • 48 or 96 Channel TTL-DTL high speed digital I/O
  • Software selectable in vs. out as 8 bit and 4 bit ports
  • Emulates 4 industry standard 8255 PPIs (mode 0)
  • Full 32-bit PCI interface design
  • Buffered circuits for higher driving capacity
  • Low CPU overhead
  • Known power-up states
  • Output port status read back
  • Standard 50-pin IDC connectors (x4)
  • 0 to +70° C and -40 to +85° C versions available
Ordering Info
  • P104-DIO-96
  • P104-DIO-48
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