MAX32660 Arm® Cortex®-M4 Microcontroller Analog Devices MAX32660 Arm® Cortex®-M4 Microcontroller is designed for battery-powered devices and wearable wireless sensors. The MAX32660 features ultralow power and combines a flexible and versatile power management unit with the powerful Arm Cortex-M4 floating point unit (FPU). The MAX32660 offers an easy and cost-optimal upgrade path for legacy designs from 8- or 16-bit microcontrollers.