Motorola MPC533 Reference Manual page 299

1
Software
Normal-Low
LPM = 00, CSRC = 1
1
Software
Doze-Low
LPM = 01, CSRC = 1
1
Software
Doze-High
LPM = 01, CSRC = 0/1
1
Software
Sleep Mode
LPM = 10, CSRC = 0
1
Software
Deep-Sleep Mode
LPM = 11, CSRC = 0,
TEXPS = 1
1
Software
Power-Down Mode
LPM = 11, CSRC = 0,
TEXPS = 0
1
Software is active only in normal-high/low modes.
2
TEXPS receives the zero value by writing one. Writing of zero has no effect on TEXPS.
3
The switch from normal-high to normal-low is enable only if the conditions to asynchronous interrupt are cleared.
Figure 8-9. MPC533 Low-Power Modes Flow Diagram
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
(MSR[POW]+Interrupt)+PLPRCR[CSRC]
((MSR[POW]+Interrupt))*CSRC
Async. Wake-up or
RTC/PIT/TB/DEC
Wake-up:
Frequency Clocks
RTC/PIT/TB/DEC Interrupt
followed by External Hard Reset
2
Software
Hard Reset
Chapter 8. Clocks and Power Control
3
Interrupt
Wake-up: 3 - 4 SysFreq
Clocks
Asynchronous
Interrupts
Wake-up: 3 - 4 Sys
Freqmax Clocks
Interrupt
500 Input
1
Low-Power Modes
Normal
High Mode
LPM = 00
CSRC = 0/1
8-21