Features and Benefits

  • High-Efficiency Microcontroller for Low-Power, High-Reliability Devices
    • Arm Cortex-M4 Core with FPU up to 100MHz
    • 384KB Flash Memory with Error Correction
    • 160KB SRAM (128KB with ECC Enabled), Optionally Preserved in Lowest Power Modes
    • 16KB Unified Cache with ECC
    • UART Bootloader
    • Dual- or Single-Supply Operation
      • Ultra-Low 0.9V to 1.1V VCORE Supply Voltage
      • Internal LDO Operation from 1.7V to 3.6V Single Supply
    • Wide Operating Temperature: -40°C to +105°C
  • Flexible Clocking Schemes
    • Internal High-Speed 100MHz Oscillator
    • Internal Low-Power 7.3728MHz and Ultra-Low-Power 80kHz Oscillators
    • 16MHz to 32MHz Oscillator (External Crystal Required)
    • 32.768kHz Oscillator (External Crystal Required)
    • External Clock Input for the Core
    • External Clock Input for the LPUART and LPTMR
  • Power Management Maximizes Uptime for Battery Applications
    • 44µA/MHz Active at 0.9V up to 12MHz
    • 50µA/MHz Active at 1.1V up to 100MHz
    • 2.6µA Full Memory Retention Power in BACKUP Mode at VDD = 1.8V
    • 350nA Ultra-Low-Power RTC at VDD = 1.8V
    • Wake from LPUART or LPTMR
  • Optimal Peripheral Mix Provides Platform Scalability
    • Up to 31 General-Purpose I/O Pins
    • Up to Three SPI Master/Slave (up to 50MHz)
    • Up to Three 4-Wire UART
    • One Low-Power UART (LPUART)
    • Up to Three I²C Master/Slave 3.4Mbps High Speed
    • 8-Channel Standard DMA Controller
    • Up to Four 32-Bit Timers (TMR)
    • Up to Two Low-Power 32-Bit Timers (LPTMR)
    • Two Windowed Watchdog Timers
    • One I²S Slave for Digital Audio Interface
  • Security and Integrity
    • Available Secure Boot
    • AES 128/192/256 Hardware Acceleration Engine
    • 32-Bit CRC Acceleration Engine

Product Details

In the Darwin family, the MAX32670/MAX32671 are ultra-low-power, cost-effective, high-reliability 32-bit microcon- trollers enabling designs with complex sensor processing without compromising battery life. They combine a flexible and versatile power management unit with the powerful Arm® Cortex®-M4 processor with a floating point unit (FPU). The MAX32670/MAX32671 also offer legacy de- signs an easy and cost optimal upgrade path from 8- or 16-bit microcontrollers.

The devices integrate up to 384KB of flash and 160KB of SRAM to accommodate application and sensor code. Error correction coding (ECC), capable of single error correction and double error detection (SEC-DED), is implemented over the entire flash, RAM, and cache to ensure ultra-reliable code execution for demanding applications. Additional features such as the two windowed watchdog timers with fully flexible and independent clocking have been added to further enhance reliable operation. Brown- out detection ensures proper operation during power-down/power-up events and unexpected supply transients.

Multiple high-speed peripherals such as 3.4MHz I2C, 50MHz SPI, and 4MBd UARTs are included to maximize communication bandwidth. In addition, a low-power UART is available for operation in the lowest power sleep modes to facilitate wakeup on activity without any loss of data. A total of six timers with I/O capability are provided, including two low-power timers to enable pulse counting, capture/compare and PWM generation even in the lowest power sleep modes. All of this capability is packaged in a tiny form factor: 5mm x 5mm, 40-pin TQFN-EP.


  • Algorithm Coprocessor
  • Battery-Powered Medical Devices
  • Industrial Sensors
  • Optical Communication Modules
  • Secure Radio Modem Controller
  • Smart Sensor Controller
  • System Housekeeping Controller

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 (1)

Product Recommendations

MAX32670 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.