LPC55S6X datasheet(62/128 Pages) NXP

62 / 128 page

LPC55S6x

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Product data sheet

Rev. 1.9 — 10 February 2020

62 of 128

NXP Semiconductors

LPC55S6x

32-bit ARM Cortex-M33 microcontroller

• Eight 32-bit general purpose registers can retain data in deep power-down. These

registers are reset only on software reset of the RTC.

7.28.5 Multi-Rate Timer (MRT)

The Multi-Rate Timer (MRT) provides a repetitive interrupt timer with four channels. Each

channel can be programmed with an independent time interval, and each channel

operates independently from the other channels.

7.28.5.1 Features

• 24-bit interrupt timer.

• Four channels independently counting down from individually set values.

• Repeat interrupt, one-shot interrupt, and one-shot bus stall modes.

7.28.6 OS Timer

42-bit free running timer with individual match/capture and interrupt generation logic used

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.

7.28.6.1 Features

• Central 42-bit, free-running gray-code event/timestamp timer.

• Match registers compared to the main counter to generate an interrupt and/or

wake-up event.

• Capture registers triggered by CPU command, readable via the AHB/IPS bus.

• APB interface for register access.

• IRQ and wake-up.

• Reads of gray-encoded timers are accomplished with no synchronization latency.

7.28.7 Micro-tick timer (UTICK)

The ultra-low power Micro-tick Timer, running from the Watchdog oscillator, can be used

to wake up the device from sleep and deep-sleep modes.

7.28.7.1 Features

• Ultra simple timer.

• Write once to start.

• Interrupt or software polling.

• Four capture registers that can be triggered by external pin transitions.

7.29 Digital peripherals

7.29.1 DMA controller

The DMA controller allows peripheral-to memory, memory-to-peripheral, and

memory-to-memory transactions. Each DMA stream provides unidirectional DMA

transfers for a single source and destination.

LPC55S6X Datasheet(PDF) 62 Page - NXP Semiconductors

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