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MAX32625：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 Applications/Uses Fitness Monitors Portable Medical Devices Sensor Hubs Sports Watches Wearable Medical Patches

DataSheet

Parametrics

Design kits & evaluation modules

• MAX32625-EVKIT
• MAX32626-EVKIT
• MAX32625NEXPAQ

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

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