Ultra Low Power Arm Cortex-M3 MCU with

Integrated Power Management

Data Sheet

ADuCM3027/ADuCM3029

Rev. B

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FEATURES

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

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

SPORT for natively interfacing with converters and radios

Programmable GPIOs (44 in LFCSP and 34 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

APPLICATIONS

Internet of Things (IoT)

Electronic shelf label (ESL) and signage

Smart infrastructure

Smart lock

Asset tracking

Smart machine, smart metering, smart building, smart city,

and smart agriculture

Wearables

Fitness and clinical

Machine learning and neural network

FUNCTIONAL BLOCK DIAGRAM

PLL

26MHz CORE RATE

SERIAL WIRE

INSTRUCTION

RAM/CACHE

(32kB)

POWER

MANAGEMENT

BUCK

FLASH

(256kB)

SRAM0

(16kB)

SRAM1

(16kB)

NVIC

MPU

REF BUFFER

ADC

TEMPERATURE

SENSOR

DMA

SPORT

SPI

PROGRAMMABLE

CRC POLYNOMIAL

SPI

SPI

UART

TMR2

TMR0

WDT

TMR1

BEEPER

RTC0

GPIO

RTC1

TRNG

MULTI-

LAYER

AMBA

BUS

MATRIX

AHB-APB

BRIDGE

WIC

ARM

CORTEX-M3

HFXTAL

LFXTAL

HFOSC

LFOSC

CRYPTO

(AES 128/256,

SHA 256)

Figure 1.