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Section 4
The AVR AT90ICEPRO
Power System
The AVR AT90ICEPRO system has an internal power regulator that can deliver 15W of
power at 5V. The AVR ICE itself uses about 10W, so if the user application is powered
from the AVR AT90ICEPRO system, it can not use more then 5 W (i.e. 5V/1A). If this
value is exceeded, the AVR AT90ICEPRO system may be damaged or not work prop-
erly.
The power supply delivered with your AT90ICEPRO is dimensioned to meet the require-
ments of the emulator. If another power supply is used, it should supply a voltage
between 9 and 15 V DC , and minimum 20W. The battery eliminator connector on the AVR
AT90ICEPRO system is a standard type with 2.1 mm center tap. Ground should be con-
nected to the center tap.
If the target application needs to be powered from the emulator, the jumper labeled
“EXT.POWER” should be mounted. Jumpers labeled “PW2”, “PW1”, and “PW0” can all
be removed when external power is selected.
If the target application runs on a supply voltage other than 5V, and you want to emulate
your system at that voltage, the jumper named “EXT.POWER” must be removed. The
pod card must also be set to convert voltages to the required voltage. Use Figure 13-2
to find what the settings on the jumpers named “PW2”, “PW1”, and “PW0” should be.
Figure 4-1. Jumper Settings
Target VCC
PW2
PW1
PW0
2.7 - 2.9 V
3.0 - 3.3 V
3.4 - 3.7 V
3.8 - 4.1 V
4.2 - 4.5 V
4.6 - 4.8 V
4.9 - 5.1 V
5.2 - 5.5 V
AT90ICEPRO User Guide
4-1
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