Features and Benefits

  • EEMBC ULPMark-CP score: 245.5
  • Ultra low power active and hibernate mode
  • Active mode dynamic current: 30 µA/MHz (typical)
  • Flexi mode: 300 µA (typical)
  • Hibernate mode: 750 nA (typical)
  • Shutdown mode: 60 nA (typical)
  • ARM Cortex-M3 processor with MPU
  • Up to 26 MHz with serial wire debug interface
  • Power management
    • Single-supply operation(VBAT): 1.74 V to 3.6 V
    • Optional buck converter for improved efficiency
  • Memory options
    • 128 kB/256 kB of embedded flash memory with ECC
    • 4 kB of cache memory to reduce active power
    • 64 kB of configurable system SRAM with parity up to 32 kB of SRAM retained in hibernate mode
  • Safety
    • Watchdog with dedicated on-chip oscillator
    • Hardware CRC with programmable polynomial
    • Multiparity bit protected SRAM
    • ECC protected embedded flash
  • Security
    • TRNG
    • User code protection
    • Hardware cryptographic accelerator supporting AES-128, AES-256, and SHA-256
  • Digital peripherals
    • 3 SPI interfaces to enable glueless interface to sensors, radios, and converters
    • I2C and UART interfaces
    • SPORT for natively interfacing with converters and radios
    • Programmable GPIOs (44 in LFCSP and 36 in WLCSP)
    • 3 general-purpose timers with PWM support
    • RTC and FLEX_RTC with SensorStrobe and time stamping
    • Programmable beeper
    • 25-channel DMA controller
  • Clocking features
    • 26 MHz clock: on-chip oscillator, external crystal oscillator
    • 32 kHz clock: on-chip oscillator, low power crystal oscillator integrated PLL with programmable divider
  • Analog peripherals
    • 12-bit SAR ADC, 1.8 MSPS, 8 channels, and digital comparator

Product Details

The ADuCM3027/ADuCM3029 microcontroller units (MCUs) are ultra low power microcontroller systems with integrated power management for processing, control, and connectivity. The MCU system is based on the ARM Cortex-M3 processor, a collection of digital peripherals, embedded SRAM and flash memory, and an analog subsystem which provides clocking, reset, and power management capability in addition to an analog-to-digital converter (ADC) subsystem.

The following are the key features of the ADuCM3027/ADuCM3029 MCUs:

  • Industry leading ultralow power consumption. 
  • SensorStrobe for precise time synchronized sampling of external sensors. 
    • Works in hibernate mode, resulting in drastic current reduction in system solutions. Current consumption reduces by 10 times when using, for example, the ADXL363 accelerometer. 
    • Software intervention is not required after setup. 
    • No pulse drift due to software execution. 
  • Leading edge security. 
    • Fast encryption provides read protection to customer algorithms. 
    • Write protection prevents device reprogramming by unauthorized code. 
  • Robust operation. 
    • Full voltage monitoring in deep sleep modes. 
    • ECC support on flash. 
    • Parity error detection on SRAM memory. 
  • Failure detection of 32 kHz LFXTAL via interrupt.


  • Internet of Things (IoT)
    • Smart machine, smart metering, smart building, smart city, smart agriculture
  • Wearables
    • Fitness and clinical

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.

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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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Evaluation Boards Pricing displayed is based on 1-piece.
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.