Analog Devices / Maxim Integrated MAX3262x Arm® Cortex®-M4F Microcontroller

Analog Devices MAX3262x Arm® Cortex®-M4F Microcontroller (MCU) is a 32-bit RISC (M4 plus Floating Point Unit) microcontroller. The Analog Devices MAX3262x is ideally suited for the emerging category of medical and fitness applications. The architecture combines high-efficiency signal-processing functionality with low cost and ease of use.

The device features four powerful & flexible power modes. Built-in dynamic clock gating and firmware-controlled power gating minimize power consumption for any application. Multiple SPI, UART, and I2C serial interfaces, and a 1-Wire® master and USB, allow for interconnection to a wide variety of external sensors. A four-input 10-bit ADC with selectable references is provided.

The Analog Devices MAX32621 is a secure version of the MAX32620, incorporating a trust protection unit (TPU) with encryption and advanced security features.

Features

  • High-efficiency microcontroller for rechargeable devices
    • Internal oscillator operates up to 96MHz
    • Floating point unit
    • Memory protection unit
    • 2MB Flash memory
    • 256KB SRAM
    • 8KB instruction cache
    • 1.2V ±5% core supply voltage
    • 1.8V ±5% I/O and analog supply voltage
    • Optional 3.3V ±5% USB supply voltage
  • Tiny 81-ball WLP minimizes board space (3.9mm x 3.9mm WLP, 0.4mm pitch)
    • Optimal peripheral mix provides platform scalability
    • Three SPI masters, four UARTs, three I2C masters, and one 1-wire master
    • 49 general-purpose I/O pins
    • SPI execute in place engine for memory expansion with minimal footprint
    • Full-speed USB 2.0 with internal transceiver
    • Sixteen pulse train engines
    • Four-input, 10-bit sigma-delta ADC operating at 7.8kS/s
  • Power management maximizes uptime for battery applications
    • 95μA/MHz active executing from Flash
    • 600nA low power (LP0) mode with RTC enabled
    • 2.5μA ultra-low power data retention mode (LP1) with fast 5μs (typ) wakeup to 96MHz
    • Peripheral Management Unit (PMU) reduces power consumption in measurement mode (LP2)
  • Trust Protection Unit (TPU) secures valuable IP and data (MAX32621 only)
    • Robust hardware internal security
    • High-speed Modular Arithmetic Accelerator (MAA) supports fast ECDSA
    • AES hardware engine
    • Hardware PRNG entropy generator
    • Secure boot loader

Applications

  • Sport watches
  • Fitness monitors
  • Wearable medical patches
  • Portable medical devices
  • Sensor hub

Videos

Published: 2015-08-26 | Updated: 2023-04-13