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NXP Semiconductors Arm Cortex-M33 Microcontrollers | Featured Product Spotlight

July 16, 2019 by Mouser Electronics

This series combines efficiency, functionality, and security, all optimized for low-cost IoT devices.

This Featured Product Spotlight is part of a video series exploring the specifications, applications, and market context of new products.

NXP Semiconductors Arm Cortex-M33 Microcontrollers

NXP Semiconductors’ LPC5500 series Arm® Cortex®-M33 Microcontrollers combine efficiency, functionality, and security supported by comprehensive enablement solutions, all optimized for low-cost IoT edge devices.

The Arm Cortex-M33 core operates at up to 100MHz and leverages the latest ARMv8-M architecture. It’s built on a low-power 40nm flash process with a current consumption of 32µA/MHz at 100MHz, and it’s offered with an optional second Cortex-M33 core to balance efficiency with performance. 

The MCU also includes a tightly-coupled proprietary DSP accelerator and a cryptographic processor significantly improving efficiency. 640KB of flash and 320KB of SRAM are available, and the peripheral set includes high-speed USB plus PHY, 50MHz high-speed SPI, and dual SDIO interfaces. To maximize efficiency, the MCU also has an integrated PMIC, multiple low-power modes, and flexible peripheral power management.

The primary core of the MCU includes Arm TrustZone technology, which provides system-wide hardware isolation for trusted software. Secure and non-secure context switching is performed in hardware, which results in faster switching than the software-based alternative and doesn’t compromise deterministic real-time response. 

The device includes an SRAM physically unclonable function based root of trust and provisioning and real-time execution is possible from encrypted images stored in the internal flash. Additional security features include secure boot, secure debug, and acceleration for AES-256 and SHA-2.

The LPCXpresso55S69 development board is a rapid development platform for the LPC5500 series and is fully supported by NXP’s MCUXpresso software and tools. The board includes a microSD card slot, NXP accelerometer, and stereo audio codec with line-in and line-out. Hardware expansion is possible using the MikroBus interface and PMod compatible connectors. 

To learn more about the evaluation board as well as the security features, efficiency, and capabilities of NXP’s LPC5500 series of microcontrollers, visit

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