Features and Benefits

  • High-Efficiency Microcontroller for Wearable Devices
    • Internal Oscillator Operates Up to 96MHz
    • Low Power 4MHz Oscillator System Clock Option for Always-On Monitoring Applications
    • 2MB Flash Memory
    • 512KB SRAM
    • 8KB Instruction Cache
    • 1.2V Core Supply Voltage
    • 1.8V to 3.3V I/O
    • Optional 3.3V ±5% USB Supply Voltage
  • Power Management Maximizes Uptime for Battery Applications
    • 106µA/MHz Active Current Executing from Cache
    • Wakeup to 96MHz Clock or 4MHz Clock
    • 600nA Low Power Mode (LP0) Current with RTC Enabled
    • 3.5µW Ultra-Low Power Data Retention Sleep Mode (LP1) with Fast 5µs Wakeup to 96MHz
  • Optimal Peripheral Mix Provides Platform Scalability
    • SPIX Execute in Place (XIP) Engine for Memory Expansion with Minimal Footprint
    • Three SPI Masters, One SPI Slave
    • Four UARTs
    • Three I²C Masters, One I²C Slave
    • 1-Wire Master
    • Full-Speed USB 2.0 Engine with Internal Transceiver
    • Sixteen Pulse Train (PWM) Engines
    • Six 32-Bit Timers and 3 Watchdog Timers
    • Up to 66 General-Purpose I/O Pins
    • One 10-Bit Delta-Sigma ADC Operating at 7.8ksps
    • RTC Calibration Output
  • Secure Valuable IP and Data with Robust Internal Hardware Security (MAX32631 and MAX32632 Only)
    • Trust Protection Unit (TPU) Including MAA Supports ECDSA and Modular Arithmetic
    • True Random Number Generator
    • AES-128, -192, -256
    • Secure Bootloader (MAX32632 Only)

Product Details

DARWIN is a new breed of low-power microcontrollers built to thrive in the rapidly evolving Internet of Things (IoT). They are smart, with the biggest memories in their class and a massively scalable memory architecture. They run forever, thanks to wearable-grade power technology. They are also tough enough to withstand the most advanced cyberattacks. DARWIN microcontrollers are designed to run any application imaginable—in places where you wouldn’t dream of sending other microcontrollers.

Generation U microcontrollers are perfect for wearables and IoT applications that cannot afford to compromise power or performance. The MAX32630-MAX32632 feature an Arm® Cortex®-M4 with FPU CPU that delivers ultra-low power, high-efficiency signal processing functionality with significantly reduced power consumption and ease of use.

Flexible power modes, an intelligent peripheral management unit (PMU), dynamic clock gating and firmware-controlled power gating optimizes power for the specific application.

Multiple SPI, UART, I2C, 1-Wire® master, and USB interfaces are provided. The four-input, 10-bit ADC with selectable references can monitor external sensors.

The MAX32631/MAX32632 are secure versions of the MAX32630. They provide a trust protection unit (TPU) with encryption and advanced security features. These include a modular arithmetic accelerator (MAA) for fast ECDSA, a true random number generator, and a hardware AES engine. The MAX32632 also provides a secure bootloader for additional security and life-cycle management.

Design Solution: Take a Weight Off Your Chest with a Wrist-Worn ECG Monitor ›

MAX32630 User's Guide

Maxim Low Power ARM Micro Toolchain (Mac)

Maxim Low Power ARM Micro Toolchain (Windows)


  • Fitness Monitors
  • Portable Medical Devices
  • Sensor Hubs
  • Sports Watches
  • Wearable Medical Patches

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (4)

Documentation & Resources

  • View All (12)
  • Data Sheets (1)
  • User Guides (4)
  • Application Notes (5)
  • Design Notes (1)
  • Technical Articles (1)
  • Reference Designs (5)

    Product Recommendations

    MAX32630 Companion Parts

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    PCN-PDN Information

    Sample & Buy

    Ordering FAQs

    See our Ordering FAQs for answers to questions about online orders, payment options and more.


    Buy Now Pricing

    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.


    List Pricing

    (*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


    Lead Times

    Please see the latest communication from our CCO regarding lead times.



    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

    Price Table Help


    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.