MAX32625 Datasheet, PDF (1/27 Pages) Maxim Integrated Products – High-Efficiency Microcontroller for Wearable Devices

MAX32625/MAX32626
Ultra-Low Power, High-Performance
ARM Cortex-M4F Microcontroller for Wearables
General Description
The MAX32625/MAX32626 is an ARM^® Cortex^®-M4F
32-bit microcontroller with an unconnected point unit,
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 oscil-
lator supports minimal power consumption for applica-
tions 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 pro-
vided, 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.
Applications
●● Sports Watches
●● Fitness Monitors
●● Wearable Medical Patches
●● Portable Medical Devices
●● Sensor Hubs
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.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
Benefits and 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
• Wake-Up 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 Wake-Up 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
19-8596; Rev 0; 8/16