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The MAX32675CALZ is a highly integrated, mixed-signal, ultra-low power microcontroller for 4-20mA loop-powered sensors and transmitters.

Product Description:

The MAX32675 is based on an ultra-low-power Arm® Cortex-M4 with a floating-point unit (FPU) and contains 384KB of flash memory and 160KB of SRAM. Error Correcting coding (ECC) supports single and double error correcting (SEC-DED) and can be used across flash memory, SRAM, and cache to ensure highly reliable code execution in demanding applications.

The analog front end (AFE) offers two 12-channel Delta-Sigma analog-to-digital converters (ADCs) whose characteristics and specifications are optimized for precision sensor measurements. Each Delta-Sigma ADC digitizes the external analog signal as well as the system temperature. Each ADC is preceded by a PGA with a gain of 1x to 128x. ADC output can also be converted dynamically from integer to single-precision floating-point format. A 12-bit DAC is also included.

The device also provides powerful security features such as AES engine, TRNG, and secure boot.

Features:

Low power consumption, high performance, suitable for industrial applications

100MHz Arm Cortex-M4 with FPU

384KB internal flash memory

160KB SRAM

128kB The ECC is enabled

44.1μA/MHz at 0.9V and 12MHz in operating mode (Coremark®)

64.5μA/MHz at 1.1V and 100MHz in operating mode (Coremark)

In backup mode, when VDDIO = 3.3V, the holding current of the entire memory is 2.84μA

Ultra-low power analog peripherals

Intelligent integration helps to reduce BOM, cost and PCB size

Two Delta-Sigma ADCs

12 channels that can be assigned to any ADC

Flexible resolution and sampling rate

24 bits, 0.4ksps

16 bits, 4ksps

12-bit DAC

On-chip temperature sensor

Digital peripheral

SPI (M/S)

Up to two I2C

Maximum two UART

Up to 23 GPIOs

timer

Up to five 32-bit timers

Two window watchdog timers

8-channel standard DMA controller

One I2S slave for digital audio interface

Robust safety and reliability

TRNG is SP800-90B compliant

Secure non-volatile key storage and AES-128/192/256

Secure boot loaders to protect IP/ firmware

Wide operating temperature range: -40°C to +105°C

Applications:

• 4-20mA industrial sensors and transmitters

• Industrial pressure, temperature, flow and level sensors/emitters

• Medical pressure, temperature and flow sensors