LPC5411x
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© NXP Semiconductors N.V. 2018. All rights reserved.
Product data sheet
Rev. 2.1 — 9 May 2018
32 of 105
NXP Semiconductors
LPC5411x
32-bit ARM Cortex-M4/M0+ microcontroller
generates an RTC wake-up interrupt request, which can wake up the part. During deep
power-down mode, the contents of the SRAM and registers are not retained. All functional
pins are tri-stated in deep power-down mode.
shows the peripheral configuration in reduced power modes.
shows the wake-up sources for reduced power modes.
Table 8.
Peripheral configuration in reduced power modes
Peripheral
Reduced power mode
Sleep
Deep-sleep
Deep power-down
FRO
Software configured Software configured
Off
Flash
Software configured Standby
Off
BOD
Software configured Software configured
Off
PLL
Software configured Off
Off
Watchdog osc and
WWDT
Software configured Software configured
Off
Micro-tick Timer
Software configured Software configured
Off
DMA
Active
Configurable some for operations, see
Off
USART
Software configured Off; but can create a wake-up interrupt in synchronous
slave mode or 32 kHz clock mode
Off
SPI
Software configured Off; but can create a wake-up interrupt in slave mode Off
I2C
Software configured Off; but can create a wake-up interrupt in slave mode Off
USB
Software configured Software configured
Off
DMIC
Software configured Software configured
Off
Other digital peripherals Software configured Off
Off
RTC oscillator
Software configured Software configured
Software configured
Table 9.
Wake-up sources for reduced power modes
Power mode Wake-up source
Conditions
Sleep
Any interrupt
Enable interrupt in NVIC.
HWWAKE
Certain Flexcomm Interface and DMIC subsystem activity.