DARWIN is the name we give to our extensive range of Arm® microcontrollers, which are designed to provide maximum performance with minimal power consumption. This range of highly integrated, secure, ultra-low-power microcontrollers provide a choice of memory size and cores, giving you the flexibility to pick the microcontroller that best suits your application. Notable features of this range of ultra-low-power microcontrollers include:

  • Energy Efficient: The ultra-low-power active/retention modes (SRAM maintained) of the MCUs maximize the uptime of battery-powered devices
  • High Performance: With up to 3MB flash, 1MB SRAM, scalable memory architecture and multi core options, these ultra-low-power microcontrollers are capable of storing, processing, and acting on the vast amounts of data used by these devices.
  • Security & Reliability: Using a modular arithmetic accelerator (MAA) with a hardware entropy source for advanced security features (AES, ECDSA, RSA, DSA, TRNG) while providing support for secure boot loading, the level of security provided by these microcontrollers is comparable to those used by financial and government institutions.
  • Smart Integration: Feature-rich microcontrollers available in miniscule packages save real estate in your design.
  • Wireless Connectivity: Wireless protocols like BLE 5 allows interconnection of devices without needing to rely on a separate chip.

Featured Content

Darwin Features Enlarge+

Meet DARWIN: A New Breed of Low-Power IoT MCUs
1:45 March 30, 2018

Featured Technical Documents

Customer Testimonials

Technical Documentation


Technical Documentation

Technical Documents

Showing 10 of View Top 100 Results View All Results

Part Number Title Document Type Date


How to Set Up a Microcontroller Project with the Maxim Arm® Cortex® Toolchain in Eclipse
7:25 October 04, 2019

Introduction of Bluetooth Low Energy—Part 1
7:20 July 16, 2018

Using the LCD Controller on the MAX32650, Part 1: What’s an LCD Controller Anyway?
6:38 August 17, 2018


Understand When and Why System Reliability Matters

October 13, 2021

Get a better understanding of when and why system reliability is important and how a low-power microcontroller can enhance reliability.

When Smarter Gets Smaller, Only a Dual-Core Micro Will Do

September 03, 2020

Learn how a dual-core Bluetooth Low Energy microcontroller meets the size, power, and security demands of wireless, battery-operated IoT designs.

How Miromico Designed the Industry’s Smallest LoRaWAN Module for the IoT

June 30, 2020

To create the industry’s smallest LoRaWAN module for the IoT, Miromico met its size, power, security, and cost targets with MAX32625/MAX32626 microcontrollers.

Virtual Sensors Show Brings Latest Technologies to You

June 22, 2020

Preview Maxim Integrated’s Sensors Experience, a virtual show featuring the latest health sensor ICs, low-power microcontrollers, and Essential Analog ICs.

Putting Intelligence in the IoT

July 05, 2018

Learn why processors with the right horsepower, memory, and security make all the difference in unleashing the invisible intelligence around us.

Meet DARWIN, a New Breed of Microcontrollers for the IoT

April 24, 2018

Meet DARWIN, a new breed of microcontrollers that addresses the demanding power, memory, and security needs of IoT designs.

Get to Market Quickly with Your Secure Wearable Health Designs

March 28, 2017

Learn how the MAX32600MBED development platform helps you get your secure, low-power wearable health designs to market quickly.

Ants Have Their Own Smart Cities—Why Can’t We?

March 07, 2017

Building a more efficient, resilient, and sustainable city? See how technologies like low-power sensors from ARM can help.

MakeWithMaxim Design Contest

February 16, 2017

Got a creative IoT design idea? Enter the contest hosted by All About Circuits, Digi-Key, and Maxim. Use a MAX32630FTHR# Pegasus board to implement your idea.

Read All Blogs

Ultra-Low-Power Microcontroller Featured Products

Part Number Flash SRAM No. of GPIOs Active Current (µA/MHz) Standby Current (µA)[1] Security Features Buy EV Kit Sample
MAX32621 Up to 2MB 256kB Up to 49 102 @ 1.2V 0.7 @ 1.8V
1.1 @ 1.2V
  • Low retention power
  • Memory lite variants available
  • Memory expansion interfaces
Buy Buy Sample
MAX32626 Up to 512kB Up to 160kB Up to 40 106 @ 1.2V AES, TPU[2], Secure Boot Buy Buy Sample
MAX32632 2MB 512kB Up to 66 106 @ 1.2V 0.6 @ 1.8V
1.9 @ 1.2V
AES, TPU[2], Secure Boot Buy Buy Sample
MAX32651 3MB 1MB Up to 105 95 @ 1.1V 0.9 @ 1.8V[5] AES, TPU[2], Secure Bootloader
  • High-speed peripherals
  • Fast clock speed (120MHz)
Buy Buy Sample
MAX32660 Up to 256kB Up to 96kB Up to 14 50 @ 0.9V[4] 1.9 @ 1.8V  
  • Tiny package
  • UART/SPI/I2C bootloader
Buy Buy Sample
MAX32666 1MB Up to 560kB Up to 48 27 @ 3.3V 6.3 @ 3.3V[5] AES, TPU[2], Secure Bootloader
  • BLE 5.0
  • Integrated SIMO
  • Dual core
Buy Buy Sample
MAX32670 384kB 160kB Up to 31 44 @ 1.8V[3] 3.0 @ 1.8V AES, TPU[2], Secure Bootloader
  • Error Correcting Code (ECC)
  • Integrated LDO
Buy Buy Sample

[1] RTC enabled and SRAM retained.
[2] TPU = Trust Protection Unit with encryption and advanced security features.
[3] Running at 12MHz.
[4] Running at 24MHz.
[5] 32kB of SRAM retained.

Reference Designs

Design Tools

Ultra-Low-Power Microcontroller Tools Supported

Ultra-Low-Power Microcontroller Development Boards

Our microcontroller development boards allow you to quickly get up and running so that you can spend less time debugging and more time exploring the features of our ultra-low-power MCUs. Our prototyping boards can be easily integrated into your own product development projects. Code development is made easy with prototyping environments such as Mbed® and Arduino® plus full-featured IDEs such as GCC/Eclipse

Product Image


Mbed-enabled development platform for the MAX32630 ultra-low-power microcontroller. On-board PMI...
Product Image


Mbed-enabled development platform for the MAX32620 ultra-low-power microcontroller. On-board PMI...
Product Image


Power-optimized Arm® Cortex®-M4F. Optimal peripheral mix provides platform scalability. On-board...
Product Image


Power-optimized Arm Cortex-M4F. Optimal peripheral mix provides platform scalability. On-board B...
Product Image


Platform to evaluate the MAX32650 ultra-low-power memory-scalable microcontroller designed speci...
Product Image


The MAX30003WING2 evaluation kit demonstrates the use of the MAX32663A MCU as an ECG sensor hub....
Product Image


Evaluation platform for the super reliable MAX32670 microcontroller which enables ECC on its mem...
Product Image


Feather form factor prototyping platform for the MAX32666 BLE 5 DARWIN microcontroller.
Product Image


Platforms to evaluate the MAX32665/MAX32666 high-efficiency Arm® microcontroller and audio DSP f...
Product Image


Compact development platform that provides access to all the features of the MAX32660 in a tiny,...