Microchip Technology MPLAB ICE, User Manual

Page: 84 / 192

MPLAB
®
ICE User’s Guide
DS51159B-page 84

2001 Microchip Technology Inc.
Below the processor is a brief description of any limitations that exist for
emulating this processor on the MPLAB ICE emulator. A more detailed
description of limitations may be viewed by clicking on Details.
To verify the applied configuration or to requery the system, click Inquire.
Click Apply to accept the setting in this tab of the dialog.
4.6 Selecting Processor Power
MPLAB ICE allows the emulator processor chip to be powered by the
emulator pod (5V) or the target system (2.0-5.5V). The emulator defaults to
Processor Power from Emulator (system power) when first initialized.
4.6.1 Processor Power from Emulator (System Power)
Select the Power tab of the Development Mode dialog. Under Processor
Power, select From Emulator and click Apply.
Figure 4.4: Development Mode Dialog – Power Tab, From Emualtor
Note: The emulator system cannot provide power to a target board
through a device adapter. If the device adapter is plugged into an
unpowered target board, it is not unusual to see a voltage level of
1-3V at V
CC
of the target board, caused by leakage current through
V
CC
of the device adapter. MPLAB may also have difficulty initial-
izing the emulator when power has not yet been applied to the tar-
get board.