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A perfect fit for power conscious designs that require high-performance capabilities

NXP Employee
NXP Employee
2 5 1,381

If you are searching for a high-performance, power efficient, yet cost sensitive MCU for your designs, then here is the exciting news: NXP recently introduced the LPC51U68 MCU.

LPC51U68 Chip Image.png

Power efficient solution for future IoT designs

Based on the Arm® Cortex®-M0+ core, the LPC51U68 MCU pushes the performance of the core to 100MHz, which is more than two times faster than current Cortex-M0+-based products. The LPC51U68 MCU also provides expanded memory resources of up to 96KB on-chip SRAM and 256 KB on-chip flash programming memory with flash accelerator. It also features unparalleled design flexibility and integration including a USB 2.0 full-speed device controller supporting crystal-less operations, eight flexible serial communication peripherals, each of which can be enabled as UART, SPIs or I2C and up to two I2S interfaces. The LPC51U68 MCU integrates a variety of timers including three general purpose timers, one versatile timer with PWM (SCTimer/PWM), one RTC/alarm timer, a multi-rate timer and watchdog timers. On the analog side, an on-chip 12-channel ADC with a 12-bit resolution and conversion rates at up to 5Msps and temperature sensors are provided. With all the features integrated, the LPC51U68 MCU brings unparalleled design flexibility, computing performance and integration into today’s demanding IoT and industrial applications.

LPC51U68 Block Diagram.jpg

Extraordinary compatibility

While considering the LPC51U68 MCU as an upgrade of the LPC11U68 MCU family, it provides pin-function compatibility with Arm® Cortex®-M4 based LPC5410x and LPC5411x MCU families in the same packages and pinout versions enabling a smooth transition to the power-efficient MCUs based on Arm® Cortex®-M4 core.


Low power design for energy efficiency

While providing excellent computing power with the Arm Cortex-M0+ core, the LPC51U68 MCU displays ultra-low-power consumption and a unique low-power design. The microcontroller supports four low-power modes and API-driven power profiles, providing developers with easy-to-use dynamic current management at runtime and fast wake-up times from the microcontroller’s reduced power modes.

LPC51U68 Run Currents.png


Make your design easier with tools supported

LPC51U68 MCUs are fully supported by NXP’s MCUXpresso software and tools which brings together the best of NXP’s software enablement into one enablement platform for a shared software experience across a broader set of Arm® Cortex®-M MCUs. In addition, this new MCU is supported by the LPCXpresso51U68 development board, designed to enable evaluation and prototyping with the LPC51U68 MCU. The board features an on-board, CMSIS-DAP / SEGGER J-Link compatible debug probe, expansion options based on Arduino UNO and PMod, plus additional expansion port pins and more


LPCXpresso51U68 Development Board

 LPC51U68 Development Board Image.png

To learn more about LPC51U68 MCU, visit


Live at Computex 2018 this week is: The High Performance Gaming Mouse Controlling Hundreds of Full Color LEDs Powered by LPC51U68

  • A 100MHz Arm® Cortex®-M0+ delivering real-time response for game player
  • 96K SRAM for LED pattern allows for a smooth transition 
  • Built-in USB drivers in ROM and supports 1K report rate
  • 8 Flexcomm serial channels to drive up to 800 LEDs with full color control at the same time

Tags (1)
Contributor III

I would like to switch to NXP MCUs, but technical support scares me.

NXP Employee
NXP Employee

Hi Fabian,
We're making it easier to switch and we're happy to help from the technical side as well! carlosmendoza

NXP Employee
NXP Employee

Hi Fabian, 

You are in good hands with NXP!  There's a lot of technical content for LPC here on our Technical Forum Community, as well as our website, including a lot of webinars. 


Contributor I

Great but please make this in smaller packages! (e.g. HVQFN)

Contributor II

Facing a pretty rough start with the error prone documentation for the new OM40005 kit. Invested most of yesterday to get the front end USB to SWD bridge working as advertised to reflash the target with a simple blinky code. What should have taken seconds to install has consumed hours and still no resolution.

Can anyone help with this open thread?