User manual

MPLAB PM3 – MPLAB IDE Reference

If the EPROM device is not blank, erase it before programming, or select another

device:

1. Remove any labels covering the device window. A non-windowed device cannot

be reprogrammed. A windowed version of all EPROM devices may be ordered

by requesting the JW package.

2. 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 the memory cells are).

3. Before attempting to program the device, perform the Blank Check again to verify

that it is blank.

7.4.8 Erase Flash Device

With the device inserted the socket, select Programmer>Erase Flash Device from the

MPLAB PM3 menu. Then, select Programmer>Blank Check All

from the MPLAB PM3

menu. This check will verify that the device is completely blank (all bits are set to

‘1’)

and all Configuration bits are set to the default value.

7.4.9 Reset Program Statistics

To reset all the program statistics, select Programmer>Reset Program Statistics. This

command will reset the counters in the Program Statistics area.

7.4.10 Transfer to MPLAB PM3

To transfer the hex file to the programmer, select Programmer>Transfer to MPLAB

PM3. This command only transfers the data, it does not program the device. This is

usually used for stand-alone operation.

7.4.11 Transfer from MPLAB PM3

To transfer the programmer memory to the hex file, select Programmer>Transfer from

MPLAB PM3. This command only transfers the programmer memory, it does not read

the device memory. This is especially useful for reading the programmer memory back

after working in Stand-Alone mode.

7.4.12 Establish Communications

To establish communications between the PC and MPLAB PM3 after power has been

disconnected from the programmer, select Programmer>Establish Communications

This command resets the programmer hardware and reestablishes communications. It

does not reset programming information in the Program Memory window, Configuration

bits or IDs.

7.4.13 About

Select Programmer>About to display version of the MPLAB PM3 OS Suite in the

programmer.

Note: If the device is EEPROM or Flash, it is not necessary to erase it before

reprogramming it. These devices are electrically erased before

programming.