MAX32675

Obsolete

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

Data Sheet (Rev. 1)

Product Selection Table

Viewing:

Overview

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 V_DDIO = 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

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.

Applications

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

There is a newer version of this part available

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

Documentation

Data Sheet 1

MAX32675: Ultra-Low-Power Arm Cortex-M4F with Precision Analog Front-End for Industrial and Medical Sensors Data Sheet (Rev.1) 02/10/2022
- Open Interactive Page

User Guide 1

UG-7594: MAX32675 User Guide 01/28/2022

This is the most up-to-date revision of the Data Sheet.

Software Resources

Evaluation Software 1

MAX32xxx-MAX78xxx MSDK Software

Can't find the software or driver you need?

Evaluation Kits

Evaluation Kit for the MAX32675, MAX32675C

Buy Now View Details

Features and Benefits

HART Compatible Secondary Master with the Ability to Connect to Existing 4-20mA Current Loop and Communicate with HART Enabled Devices
USB 2.0 Micro B to Serial UART
Two On-Board, High-Precision Voltage References
All GPIOs Signals Accessed Through 0.1in Headers
Access to 4 Analog Inputs Through SMA Connectors Configured as Differential
Access to 8 Analog Inputs Through 0.1in Headers Configured as Single-Ended
DAC Output Accessed Through SMA Connector or Test Point
10-Pin SWD and Connector
Board Power Provided by USB Port
On-Board 1.0V, 1.8V, and 3.3V LDO Regulators
Individual Power Measurement on all IC Rails Through Jumpers
Two General-Purpose LEDs and Two General- Purpose Pushbutton Switches

Product Details

The MAX32675 evaluation kit (EV kit) provides a platform for evaluation capabilities of the MAX32675 microcontroller, which is a highly integrated, mixed-signal, ultra-low-power microcontroller designed for industrial and medical sensors. It contains an integrated, low-power HART modem which enables the bidirectional transfer of digital data over a current loop, to/from industrial sensors for configuration and diagnostics

Applications

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

Software

MAX32xxx-MAX78xxx MSDK Software

Latest Discussions

1 Years Ago

3 Years Ago