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Ultra-Low-Power Arm Cortex-M4 with FPU-Based Microcontroller (MCU) with 2MB Flash and 256KB SRAM

DARWIN Generation U MCUs Are Perfect for Engineers Who Are Serious About Power and Performance

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 would not dream of sending other micro controllers.

Generation U microcontrollers are perfect for wearables and IoT applications that cannot afford to compromise power or performance. The MAX32620/MAX32621 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 MAX32621 is 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 MAX32620L provides a reduced 1MB of flash memory.

This data sheet applies to revision C and later. Legacy mode operation provides compatibility with revision A.

MAX32620 User's Guide

Maxim Low Power ARM Micro Toolchain (Mac)

Maxim Low Power ARM Micro Toolchain (Windows)

Key Features

  • High-Efficiency Microcontroller for Wearable Devices
    • Internal Oscillator Operates Up to 96MHz
    • Low Power 4MHz Option for Always-On Monitoring
    • 2MB/1MB Flash Memory
    • 256KB SRAM
    • 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
    • 122µW/MHz Active Executing from Cache
    • 62µW/MHz Active Executing from Flash
    • Wake-Up to 96MHz Clock or 4MHz Clock
    • 1.06µW Low Power Mode (LP0) Mode with RTC
    • 2.67µW Ultra-Low Power Data Retention Sleep Mode (LP1) with Fast 5µs (typ) Wakeup on 96MHz
    • 28µW/MHz Low Power Mode (LP2) Current
  • Optimal Peripheral Mix Provides Platform Scalability
    • Three SPI Masters, One SPI Slave
    • Four UARTs
    • Up to Three I2C Masters, One I2C Slave
    • 1-Wire® Master
    • Up to 49 General-Purpose I/O Pins
    • SPI Execute in Place (SPIX) Engine for Memory Expansion with Minimal Footprint
    • Full-Speed USB 2.0 with Internal Transceiver
    • Sixteen Pulse Train Engines
    • Six 32-Bit or 12 16-Bit Timers
    • Three Watchdog Timers with Independent Sources
    • Four-Input, 10-Bit Sigma-Delta ADC Operating at 7.8 kS/s, 5.5V and 1.8V Tolerant Inputs
    • AES-128, -192, -256 Hardware Engine
    • RTC Calibration Output
    • JTAG 1149.1 Compatible with Serial Wire Debug
  • Secure Valuable IP and Data with Robust Internal Hardware Security (MAX32621 Only)
    • Trust Protection Unit (TPU) Provides ECDSA and Modular Arithmetic Acceleration Support
    • True Random Number Generator (TRNG)
    • Secure Boot Loader

Applications/Uses

  • Fitness Monitors
  • Portable Medical Devices
  • Sensor Hub
  • Sport Watches
  • Wearable Medical Patches

Simplified Block Diagram

Arm® Cortex®-M4F Microcontroller (MCU) with 2MB Flash and 256KB SRAM Arm® Cortex®-M4F Microcontroller (MCU) with 2MB Flash and 256KB SRAM Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX32620 and MAX32621 evaluation kits (EV kits) provide a convenient platform for evaluating the capabilities of the MAX32620 and MAX32621 microcontrollers, respectively. While the MAX32620 EV kit includes a MAX32620 soldered directly to the board, the MAX32621 EV kit features a socketed MAX32621. Each EV kit also provides a complete, functional system ideal for development and debugging applications. Except where stated otherwise, the following sections apply to both EV kits.

View Details

Features

  • Easily Load and Debug Code Using the Supplied Olimex ARM-USB-TINY-H JTAG Debugger Connected Through a Standard 20-Pin ARM JTAG Header
  • Headers for Accessing the IC’s Pins and Analog Front End (AFE) Input Signals
  • Micro-USB Type-B Connection to the IC’s USB Device Controller
  • Micro-USB Type-B Connection to USB-UART Bridge Selectable Between the IC’s Internal UART 0 and UART 1
  • On-Board Bluetooth® 4.0 BLE Transceiver with Chip Antenna

Description

The MAX32620 and MAX32621 evaluation kits (EV kits) provide a convenient platform for evaluating the capabilities of the MAX32620 and MAX32621 microcontrollers, respectively. While the MAX32620 EV kit includes a MAX32620 soldered directly to the board, the MAX32621 EV kit features a socketed MAX32621. Each EV kit also provides a complete, functional system ideal for development and debugging applications. Except where stated otherwise, the following sections apply to both EV kits.

View Details

Features

  • Easily Load and Debug Code Using the Supplied Olimex ARM-USB-TINY-H JTAG Debugger Connected Through a Standard 20-Pin ARM JTAG Header
  • Headers for Accessing the IC’s Pins and Analog Front End (AFE) Input Signals
  • Micro-USB Type-B Connection to the IC’s USB Device Controller
  • Micro-USB Type-B Connection to USB-UART Bridge Selectable Between the IC’s Internal UART 0 and UART 1
  • On-Board Bluetooth® 4.0 BLE Transceiver with Chip Antenna

Description

The MAX35103EVKIT2 provides an application example using the MAX35103 time-to-digital converter to measure water flow as part of an off-the-shelf residential irrigation system. The kit includes a PCB and ultrasonic transducer assembly that can be added to standard 24VAC irrigation systems to provide enhanced shut-off irrigation control.

The kit features a MAX32620 Arm® Cortex®-M4 low-power MCU that executes application firmware. Debug support is provided by a 10-pin JTAG connector and a 3.3V TTL UART connector. Future Mbed™ support is provided by the included MAX32625PICO module.

The kit is designed to be inserted between a 24VAC irrigation controller and an irrigation valve. The valve and controller are optional and are not included but can easily be obtained at most home improvement retailers.

View Details

Features

  • Easy Evaluation of the MAX35103 in an Embedded Environment.
  • Audiowell Ultrasonic DN20 Ultrasonic Transducer Assembly
  • IAR Arm Development Environment Supported
  • Flexible Input Power Options for Desktop or Field Development Enabled by the MAX15062

Description

The MAX32620FTHR board is a rapid development platform designed to help engineers quickly implement battery-optimized solutions with the MAX32620 Arm® Cortex®-M4 microcontroller with FPU. The board also includes the MAX77650 ultra-low power PMIC and MAX17055 fuel gauge to provide efficient power conversion and battery management with minimal board space. The form factor is a small 0.9in x 2.0in dual-row header footprint that is compatible with breadboards and off-theshelf peripheral expansion boards. In addition to the dualrow headers, there are also two 12-pin Pmod™-compatible socket connectors for more expansion options. Also on board are common user-interface peripherals including two RGB indicator LEDs and two pushbuttons. These provide a power-optimized flexible platform for quick proofs-of-concept and early software development to enhance time to market.


Introducing the MAX32620FTHR Prototyping Platform




How to Program the MAX7360 Key Switch Controller using the Arduino IDE

View Details

Features

  • Convenient Development Platform
    • 0.9in x 2.0in DIP Form Factor
      • Breadboard Compatible
      • Feather Wing Compatible
    • Pmod-Compatible Sockets
      • Supports SPI, UART, I2C, and GPIO
      • Accessible from Both Sides of Board
    • Integrated Battery Management
      • Single-Cell Li+ Charger
      • Fuel Gauge
    • User Interface Peripherals
      • Two RGB LEDs
      • Two Pushbuttons
  • MAX32620 Microcontroller Features
    • 96MHz Arm Cortex-M4 Microcontroller with FPU
    • 2048KB Flash
    • 256KB SRAM
    • Full-Speed USB
    • SPI, I2C, UART, and 1-Wire
    • 4-Channel 10-Bit ADC
    • 49 Dual Voltage GPIO
    • 3.9mm x 4.1mm, 81-Bump WLP
  • MAX77650 Ultra-Low Power PMIC Features
    • Smart Power Selector Charger
      • Supports Li+/Li-Poly Batteries
      • 7.5mA to 300mA Charge Current
    • Single Inductor Multiple Output (SIMO) Buck-Boost Regulator
      • 3 Outputs from a Single Inductor
    • 150mA LDO Regulator
    • I2C Configurable
    • 2.75mm x 2.15mm, 30-Bump WLP
  • MAX17055 Fuel Gauge Features
    • ModelGauge m5 EZ
      • Eliminates Battery Characterization
      • Eliminates Coulomb Counter Drift
    • 7µA Operating Current
    • 1.4mm x 1.5mm, 9-Bump WLP

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Support & Training

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Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for Microcontrollers
MCU Core ARM Cortex-M4F
Internal Flash (KBytes) 2000
Core Clock Speed (MHz) (max) 96
Data Processing 32-bit
Internal SRAM (KBytes) 256
Package/Pins TQFP/100
WLP/81
Budgetary
Price (See Notes)
$5.01 @1k

Key Features

  • High-Efficiency Microcontroller for Wearable Devices
    • Internal Oscillator Operates Up to 96MHz
    • Low Power 4MHz Option for Always-On Monitoring
    • 2MB/1MB Flash Memory
    • 256KB SRAM
    • 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
    • 122µW/MHz Active Executing from Cache
    • 62µW/MHz Active Executing from Flash
    • Wake-Up to 96MHz Clock or 4MHz Clock
    • 1.06µW Low Power Mode (LP0) Mode with RTC
    • 2.67µW Ultra-Low Power Data Retention Sleep Mode (LP1) with Fast 5µs (typ) Wakeup on 96MHz
    • 28µW/MHz Low Power Mode (LP2) Current
  • Optimal Peripheral Mix Provides Platform Scalability
    • Three SPI Masters, One SPI Slave
    • Four UARTs
    • Up to Three I2C Masters, One I2C Slave
    • 1-Wire® Master
    • Up to 49 General-Purpose I/O Pins
    • SPI Execute in Place (SPIX) Engine for Memory Expansion with Minimal Footprint
    • Full-Speed USB 2.0 with Internal Transceiver
    • Sixteen Pulse Train Engines
    • Six 32-Bit or 12 16-Bit Timers
    • Three Watchdog Timers with Independent Sources
    • Four-Input, 10-Bit Sigma-Delta ADC Operating at 7.8 kS/s, 5.5V and 1.8V Tolerant Inputs
    • AES-128, -192, -256 Hardware Engine
    • RTC Calibration Output
    • JTAG 1149.1 Compatible with Serial Wire Debug
  • Secure Valuable IP and Data with Robust Internal Hardware Security (MAX32621 Only)
    • Trust Protection Unit (TPU) Provides ECDSA and Modular Arithmetic Acceleration Support
    • True Random Number Generator (TRNG)
    • Secure Boot Loader

Applications/Uses

  • Fitness Monitors
  • Portable Medical Devices
  • Sensor Hub
  • Sport Watches
  • Wearable Medical Patches

Description

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 would not dream of sending other micro controllers.

Generation U microcontrollers are perfect for wearables and IoT applications that cannot afford to compromise power or performance. The MAX32620/MAX32621 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 MAX32621 is 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 MAX32620L provides a reduced 1MB of flash memory.

This data sheet applies to revision C and later. Legacy mode operation provides compatibility with revision A.

MAX32620 User's Guide

Maxim Low Power ARM Micro Toolchain (Mac)

Maxim Low Power ARM Micro Toolchain (Windows)

Simplified Block Diagram

Arm® Cortex®-M4F Microcontroller (MCU) with 2MB Flash and 256KB SRAM Arm® Cortex®-M4F Microcontroller (MCU) with 2MB Flash and 256KB SRAM Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal