MAX32675CALZ+

MAX32675CALZ+ 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 ultrareliable code execution for demanding applications. An analogue 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. Applications include 4-20mA industrial sensors and transmitters, industrial pressure, temperature, flow, and level sensors/transmitters, medical pressure, temperature, and flow sensors.

• Digital supply voltage range from 2.7V to 3.63V
• 375μA typical full memory retention current in BACKUP (IDD-FBKUS)
• Smart integration reduces BOM, cost, and PCB size
• Four 32-bit timers, two 32-bit low-power timers, two windowed watchdog timers
• UART ROM bootloader, AES 128/192/256 hardware acceleration engine
• Persistent key storage, 32-bit CRC acceleration engine
• System clock frequency is 12MHz maximum at (TA = +25°C)
• Input noise is 208nVRMS typical at (FIR50Hz/60Hz, 16.8sps, PGA = 128)
• Power supply rejection ratio is 94dB typical at (TA = +25°C)
• Operating temperature range from -40°C to +105°C, 72-lead LGA package