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| 型号： | PICDEM2 |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | simple board |
| 中文描述： | 简洁的主板 |
| 文件页数： | 11/60页 |
| 文件大小： | 1037K |
| 代理商： | PICDEM2 |
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PICDEM 2 User
’
s Guide
DS30374D-page 6
2001 Microchip Technology Inc.
2.2 PICDEM 2 as a Stand-alone Board
–
Sample Programs
To demonstrate PICDEM 2 operation with one of the sample programs, the
sample device will have to be erased and reprogrammed. Once the device
has been reprogrammed:
Make sure the sample device is in the appropriate socket on the PIC-
DEM 2 board.
Make sure there are jumpers on J6 (to enable the LEDs) and J7 (to
enable the on-board RC oscillator).
Apply power to the PICDEM 2 (Figure 2.1). For information on accept-
able power sources, see Appendix A.
Consult the appropriate chapter in this document for information on the
execution of each demo.
2.2.1.
Erasing the Sample Device
To erase an EPROM device:
Remove any labels covering the device window. If you do not have a
windowed device (Figure 2.2), you cannot reprogram it. A windowed
version of all EPROM devices may be ordered by requesting the JW
package.
Place the device in an Ultraviolet (UV) EPROM Eraser. The amount of
time required to completely erase a UV erasable device depends on:
the wavelength of the light, its intensity, distance from UV source, and
the process technology of the device (how small are the memory cells).
Verify that the device is blank (i.e., perform a blank check) before
attempting to program it.
Figure 2.2: PIC16C74 Windowed Device
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