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Three 82C54 counter/timers
External power for high current capabilities
Economy "E" version also available without the screw terminal adaptor
OEM (board only) version with pre-drilled mounting holes for added flexibility in embedded applications
DIN rail mounting provision

OEM USB/104 FORM FACTOR

The USB-DIO-32 is designed to be used in rugged industrial environments but is small enough to fit nicely onto any desk or testing station. The board is PC/104 sized (3.550 by 3.775 inches) and ships inside a steel powder-coated enclosure with an anti-skid bottom. The OEM (board only) version is perfect for a variety of embedded applications. The board features pre-drilled mounting holes and can be installed using standoffs inside most enclosures or systems. PC/104 systems can easily add this module to an existing stack using the conveniently sized PC/104 mounting holes.

Applications

Home
Portable
Laptop
Education
Laboratory
Industrial Automation
Embedded OEM

COUNTER/TIMERS
Three 82C54 chips each include three 16-bit counter/timers factory configured in an optimal module for use as event counters, frequency output, pulse width, and frequency measurement (see the Block Diagram).

ACCESSORIES
The USB-DIO-32 is available with optional cable assemblies, screw termination boards, and an optional external AC/DC power supply. The pin connections are also compatible with industry standard I/O racks such as ACCES A24A, OPTO22, Gordos, Potter & Brumfield, etc. with optional cable.

SOFTWARE
The USB-DIO-32 includes a free Windows 98se/Me/NT/2000/XP/2003 compatible software package. This contains sample programs and source code in Visual Basic, Delphi, C++ Builder, and Visual C++ for Windows. Also incorporated is a graphical setup program in Windows. Third party support includes a Windows standard dll interface usable from the most popular application programs.

Specifications

Digital Inputs (TTL Compatible)

Logic High: 2.0 to 5.0 VDC

Logic Low: -0.5 to +0.8 VDC

Digital Outputs

Logic High: 2.0 VDC min., source 32 mA

Logic Low: 0.55 VDC max., sink 64 mA

Optional Counter/Timers

Type: 82C54-10 programmable interval counters

Output Drive:

2.0 VDC min., source 32 mA

0.55 VDC max,. sink 64 mA

Input Gate: TTL/CMOS compatible

Clock: On-board, 3 MHz crystal-controlled clock

Active Count Edge: Negative Edge

Minimum Clock Pulse Width: 30 nS high, 40 nS low

Timer Range: 16 bits

Maximum Input Frequency: 10MHz

Environmental

Operating Temperature Range: 0° to 70°C

Storage Temperature Range: -40° to +85°C

Humidity: Maximum 90% RH, without condensation

Board Dimension: 3.550 x 3.775 inches

Box Dimension: 4.00 x 4.00 x 1.25 inches

Power

+5VDC provided via USB cable up to 500mA**

Basic Unit with Three Counters: 80mA typical (no load)

**optional external power supply can be ordered if the SOURCE current from the USB-DIO-32 is expected to be greater than 420mA (80mA + 420mA = ~500mA)

Connector Pin Assignments

USB-DIO-32 has a 50-pin connector provided for I/O connections. Connector pin assignments are listed below.

Assignment Pin Assignment Pin

Port C PC7 1 Counter A0 Freq In 2

Port C PC6 3 Ctr A1 P.W.I. (Gate) 4

Port C PC5 5 Counter A2 Freq Out 6

Port C PC4 7 Counter B0 Freq In 8

Port C PC3 9 Ctr B1 P.W.I. (Gate) 10

Port C PC2 11 Counter B2 Freq Out 12

Port C PC1 13 Counter C0 Freq In 14

Port C PC0 15 Ctr C1 P.W.I. (Gate) 16

Port B PB7 17 Ctr C2 Freq Out 18

Port B PB6 19 Port D PD7 20

Port B PB5 21 Port D PD6 22

Port B PB4 23 Ground 24

Port B PB3 25 Port D PD5 26

Port B PB2 27 Ground 28

Port B PB1 29 Port D PD4 30

Port B PB0 31 Ground 32

Port A PA7 33 Port D PD3 34

Port A PA6 35 Ground 36

Port A PA5 37 Port D PD2 38

Port A PA4 39 Ground 40

Port A PA3 41 Port D PD1 42

Port A PA2 43 Ground 44

Port A PA1 45 Port D PD0 46

Port A PA0 47 Ground 48

Fused +5 VDC . 49 Ground 50