Atmel AVR ATmegaICE, Руководство пользователя

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ATmegaPOD
AVR
®
ATmegaICE User Guide 3-3
As noted above, the selected frequency range may not correspond to the crystal fre-
quency due to load capacitors and/or stray capacitors.
Due to long probe leads, it may be difficult to emulate the 32 kHz oscillator in many
designs. A way to work around this is to lift pin 2 and 3 on U351 from the PCB and sol-
der a 32 kHz crystal directly to the pins, without neither the pins nor the crystal touching
the PCB.
3.4 Power to Target
PCB
The ATmegaICE can power the target PCB with 5.0V. To enable this option, J500
should be mounted. Note that the absolute maximum supply current is 1.0A, so the tar-
get should use less than 5W of power to use this option.
If the target PCB uses voltages other than 5.0V, J500 must be removed.