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
    • 512KB Flash Memory (256KB "L" Version)
    • 160KB SRAM (128KB "L" Version)
    • 8KB Instruction Cache
    • 1.2V Core Supply Voltage
    • 1.8V to 3.3V I/O
    • Optional 3.3V ±5% USB Supply Voltage
    • Wide Operating Temperature: -30°C to +85°C
  • Power Management Maximizes Uptime for Battery Applications
    • 106µA/MHz Active Current Executing from Cache
    • 49µA/MHz Active Current Executing from Flash
    • Wakeup to 96MHz Clock or 4MHz Clock
    • 600nA Low Power Mode (LP0) Current with RTC Enabled
    • 2.56µW Ultra-Low Power Data Retention Sleep Mode (LP1) with Fast 5μs Wakeup on 96MHz Clock Source
    • 27µA/MHz Low Power Mode (LP2) Current
  • Optimal Peripheral Mix Provides Platform Scalability
    • SPI Execute in Place (SPIX) Engine for Memory Expansion with Minimal Footprint
    • Three SPI Masters, One SPI Slave
    • Three UARTs
    • Up to Two I2C Masters, One I2C Slave
    • 1-Wire Master
    • Full-Speed USB 2.0 Device with Internal Transceiver
    • Sixteen Pulse Train (PWM) Engines
    • Six 32-Bit Timers and 3 Watchdog Timers
    • Up to 40 General-Purpose I/O Pins
    • 10-Bit Delta-Sigma ADC Operating at 7.8ksps
    • AES -128, -192, -256
    • RTC Calibration Output
  • Secure Valuable IP and Data with Robust Internal Hardware Security (MAX32626 Only)
    • Trust Protection Unit (TPU) Provides ECDSA and Modular Arithmetic Acceleration Support
    • True Random Number Generator
    • Secure Boot Loader

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 MAX32625/MAX32626 feature an Arm® Cortex®-M4 with FPU CPU that delivers high-efficiency signal processing, ultra-low power consumption and ease of use.

Flexible power modes, an intelligent PMU, and dynamic clock and power gating optimize performance and power consumption for each application. Internal oscillators run at 96MHz for high-performance or 4MHz to maximize battery life in applications requiring always-on monitoring.

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.

All versions provide a hardware AES engine. The MAX32626 provides a secure trust protection unit (TPU) with a modular arithmetic accelerator (MAA) for fast ECDSA, a hardware PRNG entropy generator, and a secure boot loader. The MAX32625L provides a reduced 256kB of flash memory and 128kB of SRAM.

MAX32625 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 Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (7)

Product Recommendations

MAX32626 Companion Parts

Recommended Related Parts

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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.

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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.