Maxim公司的MAX32631是用于可穿戴設(shè)備的超低功耗高性能具有FPU的ARM MCU，提供容易使用的超低功耗高效信號處理功能，其靈活的功率模式，智能外設(shè)管理單元（PMU），動態(tài)時鐘門和固件控制的功率門優(yōu)化功率，并提供多個SPI，UART，I2C，1-Wire?主和USB接口，器件四輸入可選基準的10位ADC能監(jiān)測外接傳感器.MCU工作頻率96MHz，集成了2MB閃存，512KB SRAM，8KB指令緩存，1.2V CPU核電壓，1.8-3.3V I/O，主要用在運動手表，健身監(jiān)視器，可穿戴醫(yī)療貼片，手持醫(yī)療設(shè)備和傳感器集線器。本文介紹了MAX32631主要優(yōu)勢和特性，功能框圖和時鐘方案，以及評估板MAX32630 EVK主要優(yōu)勢和特性，框圖，電路圖，材料清單和PCB設(shè)計圖。

　　DARWIN is a new breed of low-power microcontrollers built to thrive in the rapidly evolving Internet of Things （IoT）。 They are smart， with the biggest memories in their class and a massively scalable memory architecture. They run forever， thanks to wearable-grade power technology. They are also tough enough to withstand the most advanced cyberattacks. DARWIN microcontrollers are designed to run any application imaginable—in places where you wouldn’t dream of sending other microcontrollers.

　　Generation U microcontrollers are perfect for wearables and IoT applications that cannot afford to compromise power or performance. The MAX32630–MAX32632 fea-ture an Arm? Cortex?-M4 with FPU CPU that delivers ultra-low power， high-efficiency signal processing func-tionality with significantly reduced power consumption and ease of use.

　　Flexible power modes， an intelligent peripheral management unit （PMU）， dynamic clock gating and firmware-controlled power gating optimizes power for the specific application.Multiple SPI， UART， I2C， 1-Wire? master， and USB inter-faces are provided. The four-input， 10-bit ADC with select-able references can monitor external sensors.

　　The MAX32631/MAX32632 are secure versions of the MAX32630. They provide a trust protection unit （TPU） with encryption and advanced security features. These include a modular arithmetic accelerator （MAA） for fast ECDSA， a true random number generator， and a hardware AES engine. The MAX32632 also provides a secure bootloader for additional security and life-cycle management.

　　MAX32631主要優(yōu)勢和特性：

　　High-Efficiency Microcontroller for Wearable DevicesInternal Oscillator Operates Up to 96MHz

　　Low Power 4MHz Oscillator System Clock Optionfor Always-On Monitoring Applications

　　2MB Flash Memory

　　512KB SRAM

　　8KB Instruction Cache

　　1.2V CPU Core Supply Voltage

　　1.8V to 3.3V I/O

　　Optional 3.3V ±5% USB Supply Voltage

　　Power Management Maximizes Uptime for BatteryApplications106μA/MHz Active Current Executing from Cache

　　Wakeup to 96MHz Clock or 4MHz Clock

　　600nA Low Power Mode （LP0） Current with RTCEnabled

　　3.5μW/MHz Ultra-Low Power Data Retention SleepMode （LP1） with Fast 5μs Wakeup to 96MHz

　　Optimal Peripheral Mix Provides Platform ScalabilitySPIX Execute in Place （XIP） Engine for MemoryExpansion with Minimal Footprint

　　Up to Three SPI Masters， One SPI Slave

　　Four UARTs

　　Up to Three I2C Masters， One I2C Slave

　　1-Wire Master

　　Full-Speed USB 2.0 Engine with InternalTransceiver

　　Sixteen Pulse Train （PWM） Engines

　　Six 32-Bit Timers and 3 Watchdog Timers

　　Up to 66 General-Purpose I/O Pins

　　One 10-Bit Delta-Sigma ADC Operating at 7.8ksps

　　CMOS-Level 32kHz RTC Output

　　Secure Valuable IP and Data with Robust InternalHardware Security （MAX32631 and MAX32632 Only）Trust Protection Unit （TPU） Including MAASupports ECDSA and Modular Arithmetic

　　True Random Number Generator

　　AES-128， -192， -256

　　Secure Bootloader （MAX32632 Only）

　　MAX32631應(yīng)用：

　　Sports Watches

　　Fitness Monitors

　　Wearable Medical Patches

　　Portable Medical Devices

　　Sensor Hubs

　　圖1.MAX32631簡化框圖

　　圖2.MAX32630-2時鐘方案

　　MAX32631應(yīng)用：

　　Fitness Monitors

　　Portable Medical Devices

　　Sensor Hubs

　　Sports Watches

　　Wearable Medical Patches

　　評估板MAX32630 EVK

　　The MAX32630 and MAX32631 evaluation kits （EV kits） provide a convenient platform for evaluating the capa-bilities of the MAX32630–MAX32632 microcontrollers， respectively. While the MAX32630 EV kit includes a MAX32630 soldered directly to the board， the MAX32631 EV kit features a socketed MAX32631. This version can be used to evaluate the MAX32632， but contact the fac-tory for samples. Each EV kit also provides a complete， functional system ideal for development and debugging applications. Except where stated otherwise， the follow-ing sections apply to both EV kits.

　　評估板MAX32630 EVK主要優(yōu)勢和特性：

　　Easily Load and Debug Code Using the Supplied Olimex Arm-USB-TINY-H JTAG Debugger Connected Through a Standard 20-Pin ARM JTAG Header

　　Headers for Accessing the IC’s I/O Pins and Analog Front End （AFE） Input Signals

　　USB Micro-B Connection to the IC’s USB Device Controller

　　USB Micro-B Connection to USB-UART Bridge Selectable Between the IC’s Internal UART 0 and UART 1

　　On-Board Bluetooth? 4.0 BLE Transceiver with Chip Antenna

　　評估板MAX32630 EVK包括：

　　EV kit board with a soldered MAX32630 （MAX32630-EVKIT#）

　　EV kit board with a socketed MAX32631 （MAX32631-EVKIT#）

　　Olimex? Arm?-USB-TINY-H JTAG debugger with JTAG ribbon cable （for connecting from debugger to EV kit header J1） and USB standard A-to-B cable （for connecting from PC to debugger）

　　Two standard-A to Micro-B USB cables （for connecting from a PC or stand-alone USB power supply to EV kit connectors CN1 and CN2）

　　MAX32630/MAX32631 EV Kit Quick Start

　　Hex Keys for the Socket （MAX32631 EV Kit Only）

　　圖3.評估板MAX32630 EVK外形圖

　　圖4.評估板MAX32630 EVK套件圖

　　圖5.評估板MAX32630 EVK框圖

　　圖6.評估板MAX32630 EVK電路圖（1）

　　圖7.評估板MAX32630 EVK電路圖（2）

　　圖8.評估板MAX32630 EVK電路圖（3）

　　圖9.評估板MAX32630 EVK電路圖（4）

　　圖10.評估板MAX32630 EVK電路圖（5）

　　圖11.評估板MAX32630 EVK電路圖（6）

　　評估板MAX32630 EVK材料清單：

　　圖12.評估板MAX32630 EVK默認開關(guān)設(shè)置圖

　　詳情請見：

　　https://datasheets.maximintegrated.com/en/ds/MAX32630-MAX32632.pdf

　　和https://datasheets.maximintegrated.com/en/ds/MAX32630-EVKIT-MAX32631-EVKIT.pdf

　　MAX32630-MAX32632.pdf

　　MAX32630-EVKIT-MAX32631-EVKIT.pdf