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关键词:ARM Cortex-M4 MCU 可穿戴 手持设备

时间:2017-08-31 09:33:10       作者:Maxim       来源:中电网

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

图1.MAX32625框图

图2.MAX32625/6时钟图

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
40 GPIOs
Four Input 10-Bit ADC
Expansion Connections
Arduino Form-Factor Headers
MicroSD Card Connector
Micro-USB Connectors
Prototyping Area
Integrated Peripherals
4x User Indicator LED
2x User Pushbutton
Integrated DAPLink Programming Adapter
Drag-and-Drop Programming
CMSIS-DAP SWD Debugger
USB Virtual UART
开发平台MAX32625MBED应用:
Fitness Monitors
Portable Medical Devices
Sensor Hubs
Sports Watches
Wearable Medical Patches

图3.开发平台MAX32625MBED特性图

图4.开发平台MAX32625MBED电路图(1)

图5.开发平台MAX32625MBED电路图(2)

图6.开发平台MAX32625MBED电路图(3)
开发平台MAX32625MBED材料清单:


详情请见:
https://datasheets.maximintegrated.com/en/ds/MAX32625-MAX32626.pdf
https://datasheets.maximintegrated.com/en/ds/MAX32625MBED.pdf
MAX32625MBED.pdf
MAX32625-MAX32626.pdf

 

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