TC74DEMO Microchip Technology, TC74DEMO Datasheet - Page 11

• Manufacturer Part Number: TC74DEMO
• Description: DEMO BOARD FOR TC74 THERML SENSR
• Manufacturer: Microchip Technology

Specifications of TC74DEMO

• Processor To Be Evaluated: TC74
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

2002 Microchip Technology Inc.
2.1.1.4
The Help menu offers the following commands which provide assistance with this
application:
1. Help Topics
2. About
3. Index Card
4. About Command
2.1.1.5
The TC74 Demo Board is powered directly from the computer’s parallel port, therefore,
the software power button must be clicked on in order to power and establish
communication with the board. If clicking on the power button results in an error
message, make sure that the serial bus address and parallel port address have been
set properly.
2.1.1.6
The contents of the Temperature register are non-programmable. This is a read-only
register.
The Configuration Register has only one writable bit. Bit 7 (standby mode) can be
toggled by clicking the corresponding check box. Bit 6 indicates that a sample is ready
and is read-only. All other bits read back as zero.
2.1.1.7
The temperature gauge is to the left of the temperature graph and uses the same
vertical scale as the graph. It displays the current value of the temperature register.
2.1.1.8
The temperature graph plots the last 100 readings of the temperature register. The
graph is reset whenever the On/Off power switch is clicked On or the Clear Graph
button is clicked.
A new point is graphed when the temperature register Read button is clicked or when
the software makes a timed read of the Temperature register during looped read mode.
The current set of graphed readings can be saved at any time from the File Menu.
2.1.1.9
To automatically read the temperature on an ongoing basis, click the Loop button. This
displays a dialog box that asks how often the software should read the temperature
register. Positive values up to 18 hours are allowed. A value of 0 hrs, 0 min and 0s will
be converted to 1 second. The temperature graph will be updated each time the
temperature register is read. To stop the automatic loop read, click the Stop button
(displayed only during looping mode).
Provides an index to topics on which to get assistance.
Displays the version number of this application.
Use this command to display the opening screen of Help. From the opening
screen you can go to step-by-step instructions for using the TC74 software and
to access various types of reference information. Once you open Help, you can
click the Contents button whenever you want to return to the opening screen.
Use this command to display the copyright notice and version number of your
copy of the TC74 software.
HELP MENU COMMANDS
ON/OFF BUTTON
CONFIGURATION REGISTER
THE TEMPERATURE GAUGE
THE TEMPERATURE GRAPH
LOOP BUTTON
Getting Started
DS51303A-page 7