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Data Sheet

ADuCM4050

Rev. A | Page 3 of 46

GENERAL DESCRIPTION

The ADuCM4050 microcontroller unit (MCU) is an ultra low

power integrated microcontroller system with integrated power

management for processing, control, and connectivity. The MCU

system is based on the ARM® Cortex®-M4F processor. The

MCU also has a collection of digital peripherals, embedded

static random access memory (SRAM) and embedded flash

memory, and an analog subsystem that provides clocking, reset,

and power management capabilities in addition to an analog-

to-digital converter (ADC) subsystem.

This data sheet describes the ARM Cortex-M4F core and

memory architecture used on the ADuCM4050 MCU. It does

not provide detailed programming information about the ARM

processor.

The system features include an up to 52 MHz ARM Cortex-

M4F processor, 512 kB of embedded flash memory with error

correction code (ECC), an optional 4 kB cache for lower active

power, and 128 kB system SRAM with parity. The ADuCM4050

features a power management unit (PMU), multilayer advanced

microcontroller bus architecture (AMBA) bus matrix, central

direct memory access (DMA) controller, and beeper interface.

The ADuCM4050 features cryptographic hardware supporting

advanced encryption standard (AES)-128 and AES-256 with

secure hash algorithm (SHA)-256 and the following modes:

electronic code book (ECB), cipher block chaining (CBC),

counter (CTR), and cipher block chaining-message

authentication code (CCM/CCM*) modes.

The ADuCM4050 has protected key storage with key wrap/

unwrap, and keyed hashed message authentication code (HMAC)

with key unwrap.

The ADuCM4050 supports serial port (SPORT), serial peripheral

interface (SPI), I2C, and universal asynchronous receiver/

transmitter (UART) peripheral interfaces.

The ADuCM4050 features a real-time clock (RTC), general-

purpose and watchdog timers, and programmable general-purpose

input/output (GPIO) pins. There is a hardware cyclic redundancy

check (CRC) calculator with programmable generator polynomial.

The device also features a power on reset (POR) and power supply

monitor (PSM), a 12-bit successive approximation register (SAR)

ADC, a red/green/blue (RGB) timer for driving RGB LED, and a

true random number generator (TRNG).

To support low dynamic and hibernate power management, the

ADuCM4050 MCU provides a collection of power modes and

features such as dynamic- and software-controlled clock gating

and power gating.

For full details on the ADuCM4050 MCU, refer to the

ADuCM4050 Ultra Low Power ARM Cortex-M4F MCU with

Integrated Power Management Hardware Reference.

PRODUCT HIGHLIGHTS

1. Ultra low power consumption.

2. Robust operation.

3. Full voltage monitoring in deep sleep modes.

4. ECC support on flash.

5. Parity error detection on SRAM memory.

6. Leading edge security.

7. Fast encryption provides read protection to user algorithms.

8. Write protection prevents device reprogramming by

unauthorized code.

9. Failure detection of 32 kHz low frequency external crystal

oscillator (LFXTAL) via interrupt.

10. 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.

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