Clocks and Power Control
MPC561/MPC563 Reference Manual, Rev. 1.2
8-20
Freescale Semiconductor
1Software is active only in normal-high/low modes.
2TEXPS receives the zero value by writing one. Writing of zero has no effect on TEXPS.
3The switch from normal-high to normal-low is enable only if the conditions to asynchronous interrupt are cleared.
Figure 8-9. Low-Power Modes Flow Diagram
Normal
High Mode
LPM = 00
CSRC = 0/1
Normal-Low
LPM = 00, CSRC = 1
Doze-Low
LPM = 01, CSRC = 1
Doze-High
LPM = 01, CSRC = 0/1
Sleep Mode
LPM = 10, CSRC = 0
Deep-Sleep Mode
LPM = 11, CSRC = 0,
Power-Down Mode
LPM = 11, CSRC = 0,
(MSR[POW]+Interrupt)+PLPRCR[CSRC]
((MSR[POW]+Interrupt))*CSRC3
Interrupt
Software 1
Async. Wake-up or
Interrupt
Wake-up:
Frequency Clocks
Wake-up: 3 - 4 SysFreq
Clocks
500 Input
Software 1
RTC/PIT/TB/DEC Interrupt
Hard Reset
Asynchronous
Wake-up: 3 - 4 Sys
Interrupts
Clocks
TEXPS = 1
TEXPS = 02
Software 1
RTC/PIT/TB/DEC
Freqmax
followed by External Hard Reset