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.
- 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
- Two Δ-Σ ADCs
- 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
- 4-20mA Industrial Sensors and Transmitters
- Industrial Pressure, Temperature, Flow, and Level Sensors/Transmitters
- Medical Pressure, Temperature, and Flow Sensors
Arm and Cortex are registered trademarks of
Arm Limited (or its subsidiaries) in the US and/or elsewhere.
CoreMark is a registered trademark of EEMBC.
Motorola is a trademark of Motorola Trademark Holdings, LLC.19-101222; Rev 1; 1/22