LPC55S6X datasheet(4/128 Pages) NXP

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LPC55S6x

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Product data sheet

Rev. 1.9 — 10 February 2020

4 of 128

NXP Semiconductors

LPC55S6x

32-bit ARM Cortex-M33 microcontroller



32-bit Real-time clock (RTC) with 1 s resolution running in the always-on power

domain. Another timer in the RTC can be used for wake-up from all low power

modes including deep power-down, with 1 ms resolution. The RTC is clocked by

the 32 kHz FRO or 32.768 kHz external crystal.



Multiple-channel multi-rate 24-bit timer (MRT) for repetitive interrupt generation at

up to four programmable, fixed rates.



Windowed Watchdog Timer (WWDT) with FRO 1 MHz as clock source.



The Micro-Tick Timer running from the watchdog oscillator can be used to wake-up

the device from sleep and deep-sleep modes. Includes 4 capture registers with pin

inputs.



42-bit free running OS Timer as continuous time-base for the system, available in

any reduced power modes. It runs on 32kHz clock source, allowing a count period

of more than 4 years.



Analog peripherals:



16-bit ADC with five differential channel pair (or 10 single-ended channels), and

with multiple internal and external trigger inputs and sample rates of up to 1.0

MSamples/sec. The ADC supports two independent conversion sequences.



Integrated temperature sensor connected to the ADC.



Comparator with five input pins and external or internal reference voltage.



Clock generation:



Internal Free Running Oscillator (FRO). This oscillator provides a selectable 96

MHz output, and a 12 MHz output (divided down from the selected higher

frequency) that can be used as a system clock. The FRO is trimmed to +/- 2%

accuracy over the entire voltage and temperature range.



32 kHz Internal Free Running Oscillator FRO. The FRO is trimmed to +/- 2%

accuracy over the entire voltage and temperature range.



Internal low power oscillator (FRO 1 MHz) trimmed to +/- 15% accuracy over the

entire voltage and temperature range.



Crystal oscillator with an operating frequency of 12 MHz to 32 MHz. Option for

external clock input (bypass mode) for clock frequencies of up to 24 MHz.



Crystal oscillator with 32.768 KHz operating frequency. Option for external clock

input (bypass mode) for clock frequencies of up to 100 kHz.



PLL0 and PLL1 allows CPU operation up to the maximum CPU rate without the

need for a high-frequency external clock. PLL0 and PLL1 can run from the internal

FRO 12 MHz output, the external oscillator, internal FRO 1 MHz output, or the

32.768 KHz RTC oscillator.



Clock output function with divider to monitor internal clocks.



Frequency measurement unit for measuring the frequency of any on-chip or

off-chip clock signal.



Each crystal oscillator has one embedded capacitor bank which can be used as an

integrated load capacitor. Using APIs, the capacitor banks on each crystal pin can

tune the frequency for crystals with a Capacitive Load (CL) which conserves board

space and reduces costs.



Power-saving modes and wake-up:



Integrated PMU (Power Management Unit) to minimize power consumption.



Reduced power modes: Sleep, deep-sleep with RAM retention, power-down with

RAM retention and CPU0 retention, and deep power-down with RAM retention.



Configurable wake-up options from peripherals interrupts.

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