LPC55S2X datasheet(3/132 Pages) NXP

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NXP Semiconductors

LPC55S2x/LPC552x

32-bit Arm Cortex®-M33 microcontroller

– Physical Unclonable Function (PUF) using dedicated SRAM for silicon fingerprint. PUF can generate, store,

and reconstruct key sizes from 64 to 4096 bits. Includes hardware for key extraction.

– True Random Number Generator (TRNG).

– 128 bit unique device serial number for identification (UUID).

– Secure GPIO.

• Timers:

– Five 32-bit standard general purpose asynchronous timers/counters, which support up to four capture inputs

and four compare outputs, PWM mode, and external count input. Specific timer events can be selected to

generate DMA requests.

– 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. 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 support simultaneous

conversions, on 2 ADC input channels belonging to a differential pair.

– 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 -40 C to 105 C. For devices with date code 2041

(yyww)and onwards, the FRO is trimmed to +/- 1% accuracy over the entire voltage and 0 C to 85 C.

– 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 16 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. 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.

LPC55S2X_LPC552X

All information provided in this document is subject to legal disclaimers.

Data sheet

Rev. 2.3 — 29 August 2024

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