TC74DEMO Microchip Technology, TC74DEMO Datasheet - Page 12

• 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

TC74 Serial Temperature Sensor Demo Board User’s Guide
2.2
2.3
DS51303A-page 8
HARDWARE INSTALLATION
IMPLEMENTING THE TC74
Connect the Centronics connector on the evaluation board to an available parallel port
on your computer, using a standard printer cable (cable not included with the TC74 kit).
The evaluation board is powered directly from the parallel port and therefore no
external power connection is required.
To get started with the TC74, launch the software from the Windows
The LPT Port menu allows the user to specify the address of the parallel port to which
the TC74 board is connected. The three most common addresses are shown as menu
selections:
0X378
0X278
0X3BC
Custom
To power-up the board and to start reading temperature data, simply click the “Board
Power” button. The temperature will be displayed in the temperature register and on
the thermometer and temperature graph.
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. Non-negative values up to 18 hours are allowed. A value of 0 hours, 0 minutes
and 0 seconds 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 on the Stop button.
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.
Advanced feature that allows you to enter a different address.
Set the LPT port address to 0X378.
Set the LPT port address to 0X278.
Set the LPT port address to 0X3BC.
2002 Microchip Technology Inc.
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95 start menu.