MAX32626:Ultra-Low Power, High-Performance ARM Cortex-M4F Microcontroller for Wearables

Ultra-Low Power Cortex-M4F Ideally Suited for Emerging Wearable Medical and Fitness Applications

The MAX32625/MAX32626 is a 32-bit RISC ARM® Cortex®-M4 with FPU-based microcontroller, 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. Multiple SPI, UART, and I2C serial interfaces are provided, as well as a 1-Wire® master and USB, allowing for interconnection to a wide variety of external sensors. A four-input, 10-bit delta-sigma ADC monitors analog input from external sensors. The MAX32625L is a lower-cost version of the MAX32625, providing 256kB of flash and 128kB of SRAM. The MAX32626 is a secure version of the MAX32625. It incorporates a trust protection unit (TPU) with encryption and advanced security features. These features include a modular arithmetic accelerator (MAA) for ECDSA, a hardware PRNG entropy generator, and a secure boot loader. Both the MAX32626 and the MAX32625 provide a hardware AES engine.

Key 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
    • Wakeup 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 Wakeup 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
MAX32625, MAX32626: Simplified Block Diagram
MAX32625, MAX32626: Simplified Block Diagram
Applications/Uses
  • Fitness Monitors
  • Portable Medical Devices
  • Sensor Hubs
  • Sports Watches
  • Wearable Medical Patches
DataSheet
titleDownload file
MAX32625-MAX32626 Data SheetMAX32625-MAX32626.pdf
Parametrics
Part NumberMCU CoreCore Clock Speed
(MHz)
Data ProcessingInternal Flash
(KBytes)
Internal SRAM
(KBytes)
USARTsSPI BusI2C BusUSBGPIO PinsPWMTimer FeaturesPackage/PinsBudgetary
Price
maxmaxSee Notes
MAX32625ARM Cortex-M4F9632-bit512160332 Master & 1 Slave1 x 2.0 FS Device406Capture/Compare
RTC
Wake Up Timer
Watchdog
Windowed Watchdog
WLP/63$4.52 @5k
MAX32626WLP/63$4.98 @5k
Design kits & evaluation modules
Related Products
  • MAX32630:Ultra-Low Power, High-Performance Cortex-M4F Microcontroller for Wearables
  • MAX32620:High-Performance, Ultra-Low Power ARM Cortex-M4F with FPU-Based Microcontroller for Rechargeable Devices
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX32626IWY+ActiveWLP,;63 pin;WLP;-40°C to +85°CLead Free
MAX32626IWY+TActiveWLP,;63 pin;WLP;-40°C to +85°CLead Free
MAX32625-MAX32626.pdf MAX32626
MAX32625 User's Guide MAX32626