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基于Maxim公司的MAX32625超低功耗高性能可穿戴开发平台

来源：中电网

2018-05-22

类别：消费电子

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原标题：Maxim MAX32625超低功耗高性能可穿戴开发平台

　　Maxim公司的MAX32625是具有FPU的超低功耗高性能ARM Cortex-M4 MCU,内部振荡器频率高达96MHz,集成了512KB闪存,160JB SRAM,8KB指令缓存,1.2V核电压,1.8V-3.3V I/O,可选择3.3V ±5% USB电源,具有低功耗4MHz振荡器用作常开的监视应用,主要用在运动手表,健身监视器,可穿戴医疗贴件,手持医疗设备和传感器集线器.本文介绍了MAX32625主要优势和特性,功能框图,时钟图以及用来评估的开发平台MAX32625MBED主要特性,电路图和材料清单.

　　The MAX32625/MAX32626 are ARM® Cortex®-M4with FPU-based microcontrollers, ideal for the emergingcategory of wearable medical and fitness applications.

　　The architecture combines ultra-low power,high-efficiency signal processing functionality and easeof use. An internal 96MHz oscillator provides highperformance capability, and the internal 4MHz oscillatorsupports minimal power consumption for applicationsrequiring always-on monitoring. The device provides512kB of flash and 160kB of SRAM.

　　The device features four powerful and flexible powermodes. A peripheral management unit (PMU) enablesintelligent peripheral control with up to six channels tosignificantly reduce power consumption. Built-in dynamicclock gating and firmware-controlled power gating allowsthe 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, allowingfor interconnection to a wide variety of external sensors.A four-input, 10-bit delta-sigma ADC monitors analoginput 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 encryptionand advanced security features. These features includea modular arithmetic accelerator (MAA) for ECDSA, a　hardware TRNG entropy generator, and a secure bootloader. Both the MAX32626 and the MAX32625 providea hardware AES engine.

　　MAX32625主要优势和特性:

　　●● High-Efficiency Microcontroller for Wearable Devices

　　• Internal Oscillator Operates Up to 96MHz

　　• Low Power 4MHz Oscillator System Clock Optionfor 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℃to +85℃

　　●● Power Management Maximizes Uptime for Battery

　　• 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 RTCEnabled

　　• 2.56μW Ultra-Low Power Data Retention SleepMode (LP1) with Fast 5μs Wake-Up on 96MHzClock Source

　　• 27μA/MHz Low Power Mode (LP2) Current

　　●● Optimal Peripheral Mix Provides Platform Scalability

　　• SPI Execute in Place (SPIX) Engine for MemoryExpansion 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 AllPower Modes

　　●● Secure Valuable IP and Data with Robust InternalHardware Security (MAX32626 Only)

　　• Trust Protection Unit (TPU) Provides ECDSA andModular Arithmetic Acceleration Support

　　• True Random Number Generator

　　• Secure Boot Loader

　　MAX32625应用:

　　●● Sports Watches

　　●● Fitness Monitors

　　●● Wearable Medical Patches

　　●● Portable Medical Devices

　　●● Sensor Hubs

　　开发平台MAX32625MBED

　　MAX32625MBED ARM mbed Enabled Development Platform

　　The MAX32625MBED provides a convenient platform for evaluating the capabilities of the MAX32625 microcontroller. The MAX32625MBED also provides a complete, functional system ideal for developing and debugging applications.

　　The MAX32625MBED includes a MAX32625 ARM® Cortex®-M4 microcontroller with FPU, prototyping area with adjacent access to precision analog front end (AFE) connections, I/O access through Arduino®-compatible connectors, additional I/O access through 100mil x 100mil headers, USB interface, and other general-purpose I/O devices.

　　开发平台MAX32625MBED主要特性:

　　Arduino-Compatible Headers and mbed Support Enable Rapid Prototyping of Low-Power Embedded Systems

　　MAX32625 Microcontroller

　　96MHz ARM Cortex-M4 Microcontroller with FPU

　　512KB Flash Memory

　　160KB SRAM

　　8KB Instruction Cache

　　Full-Speed USB 2.0

　　Three SPI Masters, One Slave

　　Two I2C Masters, One Slave

　　Three UARTs

　　1-Wire Master