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USB-DIO-32
USB Digital Input/Output Card
FEATURES
- 32
lines of digital I/O
- Four
8-bit ports independently selectable for inputs or
outputs
- All
32 I/O lines buffered with 24 mA source/sink current
capabilities
- Optional
three 82C54 counter/timers
- USB
2.0 device, USB 1.1compatible
- Terminal
block adapter card for easy wiring
- I/O
buffers can be enabled or tri-stated under program
control
- Jumper
selectable I/O pulled up to 5V for contact monitoring
or pulled down to ground
- Jumper
selectable power provided via USB cable or optional
external power supply for higher current capabilities
- Resettable
fused +5 VDC output
- Standard
50pin IDC type connector with key
- Card
is PC/104 size (3.550 by 3.775 in.)
- Rugged
Industrial Enclosure
- Compatible
with Industry-Standard I/O Racks such as Chassis Plans
A24A, Gordos, OPTO22, Potter & Brumfield, etc. with
optional cable
FACTORY
OPTIONS
- Source
32 mA / Sink 64 mA
- Three
82C54 counter/timers
- External
power for high current capabilities
- Economy
"E" version also available without the screw terminal
connector included
FUNCTIONAL
DESCRIPTION
The
USB-DIO-32 is an ideal solution for adding portable, easy-to-install
digital I/O and counter capabilities to any computer with
a USB port. The USB-DIO-32 is a USB 2.0 device, offering
the highest speed available with the USB bus. It is fully
compatible with both USB 1.1 and USB 2.0 ports. The card
is plug-and-play allowing quick connect/disconnect whenever
you need additional I/O on your USB port.
The USB-DIO-32 features 32 bits of TTL-compatible digital
I/O with high-current capabilities and three 82C54 counters.
Each digital port can be programmed to accept inputs
or to drive outputs on four 8-bit ports, designated
as port A, B, C, and D. Power is supplied to the card
via the USB cable or for higher current capabilities,
external power may be used. The I/O wiring connections
for USB-DIO-32 are via an industry standard 50-pin connector.
For external circuits, fused +5VDC power is available
at the connector. The resettable fuse is rated at 0.5A.
All I/O lines are buffered by a type 74ACT245 tristate
buffer transceiver capable of sourcing 24 mA (32 mA
on request) or sinking 24 mA (64 mA on request). The
buffers are configured under program control for input
or output. Pull-ups (to +5 VDC) or pull-downs (to ground)
on the card allow for contact monitoring and assure
that there are no erroneous outputs at power-up until
the card is initialized by system software.
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 card is PC/104 sized
(3.550 by 3.775 inches) and ships inside a steel powder-coated
enclosure with an anti-skid bottom.
COUNTER/TIMERS
Available on the card are three 82C54 counters that 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 external AC/DC power
supply. The pin connections are also compatible with Chassis
Plans A24A, OPTO22, Gordos, Potter & Brumfield, etc opto-isolated
module mounting racks with optional cable.
UTILITY
SOFTWARE
The USB-DIO-32 is supported by all operating systems and
include a free Windows 98se/Me/2000/XP compatible software
package. This includes sample programs and source code
in Visual Basic, Delphi, C++ Builder, and Visual C++ for
Windows. Also included is a graphical setup program in
Windows. Linux support includes installation files and
basic samples for programming from any user level via
an open source kernel driver.
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: 4.0 VDC min., source 24 mA (32 mA optional)
- Logic
Low: 0.44 VDC max., sink 24 mA (64 mA optional)
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
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
+5 VDC from the USB bus or external power supply depending
on user configuration. USB bus is specified to provide
500mA to desktop environments. If using more than
500mA, use +9VDC (on board voltage regulator outputs
+5VDC to card) external power supply (2.0mm post on
board) and remove VUSB jumper and place jumper
on VEXT. Then plug in external power before plugging
into USB port . +5V resettable fuse at 0.5A located
on connector.
Power
Required
- Basic
Unit with Three Counters: 180mA typical (no load)
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 Hi |
PC7 |
1 |
Counter
A0 Freq In |
2 |
| Port
C Hi |
PC6 |
3 |
Ctr
A1 P.W.I. (Gate) |
4 |
| Port
C Hi |
PC5 |
5 |
Counter
A2 Freq Out |
6 |
| Port
C Hi |
PC4 |
7 |
Counter
B0 Freq In |
8 |
| Port
C Lo |
PC3 |
9 |
Ctr
B1 P.W.I. (Gate) |
10 |
| Port
C Lo |
PC2 |
11 |
Counter
B2 Freq Out |
12 |
| Port
C Lo |
PC1 |
13 |
Counter
C0 Freq In |
14 |
| Port
C Lo |
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 |
Regulatory
Compliance 
Declaration of Conformity, and Test Reports are on
file. Users must use appropriate shielded cables.
| Part
Number |
Price(USD)
|
| USB-DIO-32 |
169.00
|
| USB-DIO-32E |
139.00
|
| USB-DIO-32
- Standard card: no counter/timers, self-powered |
| USB-DIO-32E
- Economy card: no counter/timers, no screw terminal,
self-powered |
| Options
for USB-DIO-32 (only): |
| -Cx
(where x = 1, 2, or 3) |
Optional
counters on board $10 each |
| -P |
Optional
external power and AC/DC adapter $25 |
View / Download
Datasheet (in .PDF format)
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