USB-6501 NI [National Instruments Corporation], USB-6501 Datasheet

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USB-6501

Manufacturer Part Number
USB-6501
Description
Small, portable digital I/O device/24 digital I/O lines, one 32-bit counter
Manufacturer
NI [National Instruments Corporation]
Datasheet
1.USB-6501.pdf (5 pages)
Low-Cost Digital I/O Device for USB
NI USB-6501
• Small, portable digital I/O device
• 24 digital I/O lines, one 32-bit counter
• Overvoltage protection, 8.5 mA
• Full-speed USB (12 Mb/s) bus interface
• Built-in screw terminals with removable
• OEM version available with 34-pin IDC
Overview
The National Instruments USB-6501 is a portable digital I/O device,
providing reliable data acquisition and control at a low price. With
plug-and-play USB connectivity, the NI USB-6501 is simple enough
for home/academic applications but robust and versatile enough for
laboratory/industrial applications. The board-only version is ideal
for embedded OEM applications.
Hardware
The USB-6501 is a full-speed USB device that provides 24 DIO lines and
a 32-bit counter. The 24 digital lines are arranged in three ports: P0.<0..7>,
P1.<0..7>, and P2.<0..7>. P2.7 can also function as a 32-bit counter. You
can individually program each of the USB-6501 DIO lines as a DI or DO
line and use the DIO lines to monitor or control digital signals. All
samples of the DI lines and updates of the DO lines are software-timed.
5 V operation with an onboard 4.7 kΩ pull-up resistor. You can add an
external, user-provided, pull-up resistor to increase the source current
drive up to 8.5 mA per line.
overcurrent conditions, as well as ESD events. At system startup and
reset, the hardware sets all DIO lines to high-impedance inputs.
Table 1. USB-6501 Features
Product
NI 6501
current drive
connectors for easier connectivity
mass termination connectivity
The default configuration of the USB-6501 DIO ports is open-drain, for
Each DIO signal is protected against overvoltage, undervoltage, and
Bus
USB
Digital I/O
Lines
24
Counter/
Timers
1
Operating Systems
• Windows Vista/XP/2000
• Mac OS X
• Linux
Recommended Software
• LabVIEW
• LabWindows
Measurement Services
Software (included)
• NI-DAQmx driver software
• Measurement & Automation Explorer
1
NI-DAQmx Base.
Mac OS X and Linux users need to download
Current
8.5 mA
Drive
configuration utility
®1
Logic Level
5 V TTL /
1
CMOS
™
/CVI
Feature Set
Industrial
–
Figure 1. USB-6501 Pinout
Terminal
Terminal
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
Signal
Signal
GND
GND
GND
GND
GND
GND
+5 V
P1.7
P1.6
P1.5
P1.4
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
+5 V

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USB-6501 Summary of contents

Page 1

... The 24 digital lines are arranged in three ports: P0.<0..7>, P1.<0..7>, and P2.<0..7>. P2.7 can also function as a 32-bit counter. You can individually program each of the USB-6501 DIO lines line and use the DIO lines to monitor or control digital signals. All samples of the DI lines and updates of the DO lines are software-timed. ...

Page 2

... P0.6 P0.7 Board-Only Version for OEMs A board-only version of the USB-6501 is available to OEMs for use in embedded applications. The OEM version offers a 34-pin IDC ribbon GND cable header for mass termination instead of screw-terminal connectivity. You can mount the OEM version using standoffs (not included in kit) with your own enclosure. For information on special confi ...

Page 3

... Screw-terminal wiring ........................ AWG copper conductor Torque for screw terminals................. 0.22 to 0.25 N · m Weight................................................. oz) Safety Standards The USB-6501 is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 61010-1 • ...

Page 4

... The following section contains important safety information that you must follow when installing and using the USB-6501. Do not operate the USB-6501 in a manner not specified in this document. Misuse of the device can result in a hazard. You can compromise the safety protection built into the device if the device is damaged in any way ...

Page 5

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