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Ultra-Low-Power Arm Cortex-M4F with Precision Analog Front-End for Industrial and Medical Sensors

Highly Integrated, Mixed-Signal, Ultra-Low-Power Microcontroller Suitable for 4-20mA Loop-Powered Sensors and Transmitters

Product Details

Key Features

Parametric specs for Microcontrollers
MCU Core ARM Cortex-M4F
Internal Flash (KBytes) 384
Core Clock Speed (MHz) (max) 100
Data Processing 32-bit
Internal SRAM (KBytes) 160
Package/Pins TQFN/68
Budgetary
Price (See Notes)
4.45
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Parameters

Parametric specs for Microcontrollers
MCU Core ARM Cortex-M4F
Internal Flash (KBytes) 384
Core Clock Speed (MHz) (max) 100
Data Processing 32-bit
Internal SRAM (KBytes) 160
Package/Pins TQFN/68
Budgetary
Price (See Notes)
4.45

Key Features

  • Low-Power, High-Performance for Industrial Applications
    • 100MHz Arm Cortex-M4 with FPU
    • 384KB Internal Flash
    • 160KB SRAM
      • 128kB ECC Enabled
    • 44.1μA/MHz ACTIVE Mode at 0.9V up to 12MHz Coremark®
    • 64.5μA/MHz ACTIVE Mode at 1.1V up to 100MHz Coremark
    • 2.84μA Full Memory Retention Current in BACKUP Mode at VDDIO = 3.3V
    • Ultra-Low-Power Analog Peripherals
  • Smart Integration Reduces BOM, Cost, and PCB Size
    • Two Δ-Σ ADCs
      • 12 Channels, Assignable to Either ADC
      • Flexible Resolution and Sample Rates
        • 24 Bits at 0.4ksps
        • 16 Bits at 4ksps
    • 12-Bit DAC
    • On-Die Temperature Sensor
    • Digital Peripherals
      • SPI (M/S)
      • Up to Two I2C
      • Up to Two UARTs
      • Up to 23 GPIOs
    • Timers
      • Up to Five 32-Bit Timers
      • Two Windowed Watchdog Timers
    • 8-Channel Standard DMA Controller
    • One I2S Slave for Digital Audio Interface
  • Robust Security and Reliability
    • TRNG Compliant to SP800-90B
    • Secure Nonvolatile Key Storage and AES-128/192/256
    • Secure Bootloader to Protect IP/Firmware
    • Wide, -40°C to +105°C Operating Temperature Range

Applications/Uses

  • 4-20mA industrial Sensors and Transmitters
  • Industrial Pressure, Temperature, Flow, and Level Sensors/Transmitters
  • Medical Pressure, Temperature, and Flow Sensors

Description

​The MAX32675 is a highly integrated, mixed-signal, ultra-low-power microcontroller for industrial applications and is especially suitable for 4-20mA loop-powered sensors and transmitters. It is based on an ultra-low-power Arm® Cortex®- M4 with Floating Point Unit (FPU) and includes 384KB of flash and 160KB of SRAM. Error correction coding (ECC), capable of single error correction, double error detection (SEC-DED), is implemented over the entire flash, SRAM, and cache to ensure ultra-reliable code execution for demanding applications.

An analog front-end (AFE) provides two 12-channel delta-sigma (Δ-Σ) ADCs with features and specifications optimized for precision sensor measurement. Each Δ-Σ ADC can digitize external analog signals as well as system temperature. A PGA with gains of 1x to 128x precedes each ADC. ADC outputs can be optionally converted on the fly from integer to single-precision floating-point format. A 12-bit DAC is also included.

The device also provides robust security features such as an AES Engine, TRNG, and secure boot.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .