Datasheet

LPC435X_3X_2X_1X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 4 — 19 August 2014 86 of 158
NXP Semiconductors
LPC435x/3x/2x/1x
32-bit ARM Cortex-M4/M0 microcontroller
Wake-up from sleep mode is caused by an interrupt or event in the core’s NVIC. The
interrupt is captured in the NVIC and an event is captured in the Event router. Both cores
can wake up from sleep mode independently of each other.
Wake-up from the Power-down modes, Deep-sleep, Power-down, and Deep power-down,
is caused by an event on the WAKEUP pins or an event from the RTC or alarm timer.
When waking up from Deep power-down mode, the part resets and attempts to boot.
7.23.10 Power control
The LPC435x/3x/2x/1x feature several independent power domains to control power to
the core and the peripherals (see Figure 9
). The RTC and its associated peripherals (the
alarm timer, the CREG block, the OTP controller, the back-up registers, and the event
router) are located in the RTC power-domain. The main regulator or a battery supply can
power the RTC. A power selector switch ensures that the RTC block is always powered
on.