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UM10503
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
158 of 1441
NXP Semiconductors
UM10503
Chapter 12: LPC43xx/LPC43Sxx Power Management Controller (PMC)
Remark:
Before selecting the Deep-sleep mode or Power-down mode, you must select
the IRC as the clock source for all output clocks through the CGU registers (see
) and power down all PLLs.
When the master core enters and wakes up from Sleep mode, the state of the other core remains unchanged.
When the master core enters and wakes up from deep-sleep or power-down mode, the other core returns to the state it was in
before deep-sleep or power-down mode.
To release the M0 reset, write a 0 to the M0APP_RST or the M0SUB_RST bit in the RESET_CTRL1/0 registers
(
).
Fig 34. Power mode transitions
M0APP/M0SUB
active (master)
PD0_SLEEP0_HW_ENA = 0x2
M4 active
M4 sleep
M4 active (master)
PD0_SLEEP0_HW_ENA = 0x1
M0APP/M0SUB reset
M0APP/M0SUB
sleep
M4 active
M4 sleep
M0: WFI/WFE,
SLEEPDEEP = 0
M0: WFI/WFE, SLEEPDEEP = 1
PD0_SLEEP0_MODE = 0x0030 00AA or
0x0030 FCBA
M0 NVIC: IRQ
M0 NVIC: event router IRQ
System
Deep-sleep
Power-down
M0: WFI/WFE, SLEEPDEEP = 1
PD0_SLEEP0_MODE = 0x0030 FF7F
System
Deep Power-down
WAKEUP pins
RTC/alarm timer alarm
WAKEUP pins
RTC/alarm timer alarm
chip reset
M4 active (master)
PD0_SLEEP0_HW_ENA = 0x1
M0APP/M0SUB active
M0APP/M0SUB sleep
M0APP/M0SUB reset
M4 sleep
M0APP/M0SUB active
M0APP/M0SUB sleep
M0APP/M0SUB reset
M4:WFI/WFE,
SLEEPDEEP = 0
M4: WFI/WFE, SLEEPDEEP = 1
PD0_SLEEP0_MODE = 0x0030 00AA or
0x0030 FCBA
M4 NVIC: IRQ
M4 NVIC: event router IRQ
System
Deep-sleep
Power-down
M4: WFI/WFE, SLEEPDEEP = 1
PD0_SLEEP0_MODE = 0x0030 FF7F
System
Deep Power-down
WAKEUP pins
RTC/Alarm timer alarm
WAKEUP pins
RTC/ALARM timer alarm
chip reset
Default after boot