General Description
The MAX32625/MAX32626 is an ARM® Cortex®-M4F 32-bit microcontroller with an unconnected point unit, ideal for the emerging category of wearable medical and fitness applications. The architecture combines ultra-low power, high-efficiency signal processing functionality and ease of use. An internal 96MHz oscillator provides high-performance capability, and the internal 4MHz oscillator supports minimal power consumption for applications requiring always-on monitoring. The device provides 512kB of flash and 160kB of SRAM.
The device features four powerful and flexible power modes. A peripheral management unit (PMU) enables intelligent peripheral control with up to six channels to significantly reduce power consumption. Built-in dynamic clock gating and firmware-controlled power gating allows the user to optimize power for the specific application.

Benefits and Features
● High-Efficiency Microcontroller for Wearable Devices
   • Internal Oscillator Operates Up to 96MHz
   • Low Power 4MHz Oscillator System Clock Option
      for Always-On Monitoring Applications
   • 512KB Flash Memory (256KB “L” Version)
   • 160KB SRAM (128KB “L” Version)
   • 8KB Instruction Cache
   • 1.2V Core Supply Voltage
   • 1.8V to 3.3V I/O
   • Optional 3.3V ±5% USB Supply Voltage
   • Wide Operating Temperature: -30°C to +85°C
● Power Management Maximizes Uptime for Battery
   Applications
   • 106μA/MHz Active Current Executing from Cache
   • 49μA/MHz Active Current Executing from Flash
   • Wake-Up to 96MHz Clock or 4MHz Clock
   • 600nA Low Power Mode (LP0) Current with RTC
      Enabled
   • 2.56μW Ultra-Low Power Data Retention Sleep
      Mode (LP1) with Fast 5μs Wake-Up on 96MHz
      Clock Source
   • 27μA/MHz Low Power Mode (LP2) Current
● Optimal Peripheral Mix Provides Platform Scalability
   • SPI Execute in Place (SPIX) Engine for Memory
      Expansion with Minimal Footprint
   • Three SPI Masters, One SPI Slave
   • Three UARTs
   • Up to Two I2C Masters, One I2C Slave
   • 1-Wire Master
   • Full-Speed USB 2.0 Device with Internal
      Transceiver
   • Sixteen Pulse Train (PWM) Engines
   • Six 32-Bit Timers and 3 Watchdog Timers
   • Up to 40 General-Purpose I/O Pins
   • 10-Bit Delta-Sigma ADC Operating at 7.8ksps
   • AES -128, -192, -256
   • CMOS-Level 32kHz RTC Output Available in All
      Power Modes
● Secure Valuable IP and Data with Robust Internal
   Hardware Security (MAX32626 Only)
   • Trust Protection Unit (TPU) Provides ECDSA and
      Modular Arithmetic Acceleration Support
   • PRNG Seed Generator
   • Secure Boot Loader

Applications
● Sports Watches
● Fitness Monitors
● Wearable Medical Patches
● Portable Medical Devices
● Sensor Hubs