Datasheet
LPC55S6x All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2019. All rights reserved.
Product data sheet Rev. 1.0 — 26 February 2019 4 of 123
NXP Semiconductors
LPC55S6x
32-bit ARM Cortex-M33 microcontroller
One SCTimer/PWM with 8 input and 10 output functions (including 16 capture and
match registers). Inputs and outputs can be routed to or from external pins and
internally to or from selected peripherals. Internally, the SCTimer/PWM supports 16
captures/matches, 16 events, and 32 states.
32-bit Real-time clock (RTC) with 1 s resolution running in the always-on power
domain. A 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 +/- 65%
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 25 MHz.
Crystal oscillator with 32.768 KHz operating frequency.
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.
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.
Configurable wake-up options from peripherals interrupts.