66-MHz Electrical Characteristics
MPC561/MPC563 Reference Manual, Rev. 1.2
G-16
Freescale Semiconductor
Figure G-5. Option B Power-Up Sequence Without Keep-Alive Supply
Figure G-6. Option B Power-Up Sequence With Keep-Alive Supply
The option B power-down sequence (excluding V
DDKA
) is:
1. The V
DDL
supply group can be fully powered-down prior to power-down of the V
DDH
supply
group, with no adverse affects to the device.
For power-down, the low voltage supply should come down before the high voltage supply, although with
varying loads, the high voltage may actually get ahead.
illustrates the power-down sequence if no keep-alive supply is required.
illustrates
the power-down sequence if a keep-alive supply is required.
V
DDH
V
DDL
V
DDH
cannot lag V
DDL
by more than 0.5 V
0.5-V lag
V
DDH
V
DDL
V
DDH
cannot lag V
DDL
by more than 0.5 V
0.5-V lag
V
DDKA
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...