MAX32675C

RECOMMENDED FOR NEW DESIGNS

MAX32675C

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

The MAX32675C 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.

RECOMMENDED FOR NEW DESIGNS

Part Details

72L Land Grid Array Package Drawing slide

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Part Models 2

1ku List Price Starting From $6.29

Features

Low-Power, High-Performance for Industrial Applications
- 12MHz Arm Cortex-M4 with FPU
- 384KB (376KB User) Flash Memory
- 160KB SRAM (128KB with ECC Enabled)
  - Optionally Retained in Low-Power Modes
- ACTIVE Current (I_{DD_ACTS}) ≤ 2.1mA at T_A = +85°C
  - Ideal for 4-20mA Current Sense Loops
- Startup Current Typical (I_{DD_STRT}) of 1.02mA
- 375μA Full Memory Retention Current in BACKUP(I_{DD_FBKUS})
Smart Integration Reduces BOM, Cost, and PCB Size
- Integrated HART Modem
- Two Δ-Σ ADCs
  - 12 Channels, Assignable to Either ADC
  - Flexible Resolution and Sample Rates
    - 24-Bits at up to 0.4ksps
- 12-Bit DAC
- Internal Reference

Digital Peripherals
- Up to Two SPI
- Up to Three I²C
- Up to Three 4-Wire UART
- Up to One 4-Wire Low-Power UART (LPUART)
8-Channel Standard DMA Controller
Up to 36 GPIOs
Timers
- Four 32-Bit Timers
- Two 32-Bit Low-Power Timers (LPTMR)
- Two Windowed Watchdog Timers
Robust Security and Reliability
- UART ROM Bootloader
- AES 128/192/256 Hardware Acceleration Engine
- Persistent Key Storage
- 32-Bit CRC Acceleration Engine
- Wide, -40°C to +105°C Operating Temperature Range

Additional Details

The MAX32675C 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 (376KB user) 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) with an integrated, low-power HART modem enables the bidirectional transfer of digital data over a current loop with industrial sensors for configuration and diagnostics. The AFE also 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 to128x 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, including an AES engine and persistent key storage.

APPLICATIONS

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