Arizona Picdem 17 - Manual (Page 15)

 2001 Microchip Technology Inc. DS39024B-page 9
Using the PICDEM 17 Monitor
2.5 Resetting the PICDEM 17 Demonstration Board
One unique feature of USART2 is the ability to reset the PICmicro
®
MCU.
This is accomplished by connecting the DTR signal from P2 to the MCLR pin
of the PICmicro MCU using the circuit in Figure 2.4. Jumper J3 is also
provided to disable this feature. To reset the microcontroller, simply click on
Reset in the Monitor window. The boot message should display on the
message area.
2.6 Erasing the FLASH on the PICDEM 17
Demonstration Board
The Monitor program allows the external FLASH program memory device to
be erased by clicking on the Erase button. This simply erases the FLASH
memory. When a download is requested, the PIC17C756A automatically
erases the FLASH. Therefore, it is not required that the FLASH be erased
using the Erase button before a download is initiated.
2.7 Downloading HEX Files to the PICDEM 17
Demonstration Board
To download a HEX file to the PICDEM 17 demonstration board, first click on
Download…. This will open a Select HEX file window that allows the
selection of the desired HEX file to load into the external FLASH program
memory on the PICDEM 17.
Figure 2.2: Select HEX file Window
Once a HEX file has been selected for downloading to the PICDEM 17
demonstration board, the Monitor will show a Downloading… status window
that has a bar graph display of percentage download of the file. Initially, there
will be a slight pause allowing the PIC17C756A to erase the FLASH memory.