EVALUATION KIT AVAILABLE
MAX32630/MAX32631
Ultra-Low Power, High-Performance
Cortex-M4F Microcontroller for Wearables
General Description
Benefits and Features
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The MAX32630/MAX32631 is an ARM Cortex -M4F
32-bit microcontroller with a floating point unit, ideal for
the emerging category of wearable medical and fitness
applications. The architecture combines ultra-low power
high-efficiency signal processing functionality with signifi-
cantly reduced power consumption and ease of use. 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,
● High-Efficiency Microcontroller for Wearable Devices
• Internal Oscillator Operates Up to 96MHz
• Low Power 4MHz Oscillator System Clock Option
for Always-On Monitoring Applications
• 2MB Flash Memory
• 512KB SRAM
• 8KB Instruction Cache
• 1.2V Core Supply Voltage
• 1.8V to 3.3V I/O
• Optional 3.3V ±5% USB Supply Voltage
● Power Management Maximizes Uptime for Battery
Applications
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UART and I C serial interfaces, as well as 1-Wire mas-
ter and USB, allow for interconnection to a wide variety of
external sensors. A four-input, 10-bit ADC with selectable
references is available to monitor analog input from exter-
nal sensors and meters. The small 100-ball WLP package
provides a tiny, 4.37mm x 4.37mm footprint.
• 106μA/MHz Active Current Executing from Cache
• Wakeup to 96MHz Clock or 4MHz Clock
• 600nA Low Power Mode (LP0) Current with RTC
Enabled
• 3.5μW Ultra-Low Power Data Retention Sleep
Mode (LP1) with Fast 5μs Wakeup to 96MHz
The MAX32630/MAX32631 include a hardware AES
engine. The MAX32631 is a secure version of the
MAX32630. It incorporates a trust protection unit (TPU)
with encryption and advanced security features. These
features include a modular arithmetic accelerator (MAA)
for fast ECDSA, a hardware PRNG entropy generator,
and a secure boot loader.
● Optimal Peripheral Mix Provides Platform Scalability
• SPIX Execute in Place (XIP) Engine for Memory
Expansion with Minimal Footprint
• Three SPI Masters, One SPI Slave
• Four UARTs
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• Three I C Masters, One I C Slave
• 1-Wire Master
• Full-Speed USB 2.0 Engine with Internal
Transceiver
Applications
● Sports Watches
• 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
• AES-64, -128, -256
● Fitness Monitors
● Wearable Medical Patches
● Portable Medical Devices
● Sensor Hubs
• CMOS-Level 32kHz RTC Output
● Secure Valuable IP and Data with Robust Internal
Hardware Security (MAX32631 Only)
• Trust Protection Unit (TPU) Including MAA Sup-
ports ECDSA and Modular Arithmetic
• PRNG Seed Generator
Ordering Information appears at end of data sheet.
ARM is a registered trademark and registered service mark and
Cortex is a registered trademark of ARM Limited.
• Secure Boot Loader
1-Wire is a registered trademark of Maxim Integrated Products,
Inc.
19-8478; Rev 0; 3/16