Motorola MPC533 Reference Manual page 1109

2. V V
≥
DDH DDL
Figure K-3 illustrates the power-down sequence if no keep-alive supply is required.
V
DDH
V
DDL
Figure K-3. Option A Power-Down Sequence Without Keep-Alive Supply
Figure K-4 illustrates the power-down sequence if a keep-alive supply is required.
V
DDH
V
DDL
V cannot lag V
DDH
≥ V
V
DDH
Figure K-4. Option A Power-Down Sequence With Keep-Alive Supply
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
- 0.5 V (V cannot lead V
DDH
0.5-V Max
V cannot lag V by more than 3.1 V.
DDH DDL
≥ V
V - 0.5 V (V
DDH DDL DDH
0.5-V Max
by more than 3.1 V.
DDL
- 0.5 V (V cannot lead V
DDL DDH
Appendix K. Electrical Characteristics
by more than 0.5 V)
DDL
3.1-V Max
Ramp down rates may differ
with load, so care should be taken
maintain V
cannot lead V by more than 0.5 V.)
DDL
3.1-V Max
by more than 0.5 V.)
DDL
Power-Up/Down Sequencing
with respect to V
DDH DDL
V
DDKA
Ramp down rates may
differ with load.
.
K-15