1. General description
The LPC546xx is a family of ARM Cortex-M4 based microcontrollers for embedded
applications featuring a rich peripheral set with very low power consumption and
enhanced debug features.
The ARM Cortex-M4 is a 32-bit core that offers system enhancements such as low power
consumption, enhanced debug features, and a high level of support block integration. The
ARM Cortex-M4 CPU incorporates a 3-stage pipeline, uses a Harvard architecture with
separate local instruction and data buses as well as a third bus for peripherals, and
includes an internal prefetch unit that supports speculative branching. The ARM
Cortex-M4 supports single-cycle digital signal processing and SIMD instructions. A
hardware floating-point processor is integrated into the core.
The LPC546xx family includes up to 512 KB of flash, 200 KB of on-chip SRAM, up to
16 kB of EEPROM memory, a quad SPI Flash Interface (SPIFI) for expanding program
memory, one high-speed and one full-speed USB host and device controller, Ethernet
AVB, LCD controller, Smart Card Interfaces, SD/MMC, CAN FD, an External Memory
Controller (EMC), a DMIC subsystem with PDM microphone interface and I
2
S, five
general-purpose timers, SCTimer/PWM, RTC/alarm timer, Multi-Rate Timer (MRT), a
Windowed Watchdog Timer (WWDT), ten flexible serial communication peripherals
(USART, SPI, I
2
S, I
2
C interface), Secure Hash Algorithm (SHA), 12-bit 5.0 Msamples/sec
ADC, and a temperature sensor.
2. Features and benefits
ARM Cortex-M4 core (version r0p1):
ARM Cortex-M4 processor, running at a frequency of up to 220 MHz.
The LPC5460x/61x devices operate at CPU frequencies of up to 180 MHz. The
LPC54628 device operates at CPU frequencies of up to 220 MHz.
Floating Point Unit (FPU) and Memory Protection Unit (MPU).
ARM Cortex-M4 built-in Nested Vectored Interrupt Controller (NVIC).
Non-maskable Interrupt (NMI) input with a selection of sources.
Serial Wire Debug (SWD) with six instruction breakpoints, two literal comparators,
and four watch points. Includes Serial Wire Output and ETM Trace for enhanced
debug capabilities, and a debug timestamp counter.
System tick timer.
LPC546xx
32-bit ARM Cortex-M4 microcontroller; up to 512 KB flash and
200 kB SRAM; High-speed USB device/host + PHY; Full-speed
USB device/host; Ethernet AVB; LCD; EMC; SPIFI; CAN FD,
SDIO; SHA; 12-bit 5 Msamples/s ADC; DMIC subsystem
Rev. 1.8 — 14 June 2017 Product data sheet
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