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