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Rev. 5.00, 09/03, page 658 of 760
Pin states undefined
(Max. 1 ms)
3.3 V
1.7 V/1.8 V/1.9 V/2.0 V
3.3 V power
1.7 V/1.8 V/1.9 V/2.0 V power
RESETP
A
ll other pins*
Pin states undefined Power-on reset state
Note: * Except power/GND, clock related, and analog pins
Power-On Sequence
• Power-off order
1. In the reverse order of powering-on, first turn off the 1.7 V/1.8 V/1.9 V/2.0 V power, then
turn off the 3.3 V power within 1 ms. This interval should be as short as possible.
2. Pin states are undefined while only the 1.7 V/1.8 V/1.9 V/2.0 V power is off. The system
design must ensure that these undefined states do not cause erroneous system operation.