MAX32625/MAX32626 Ultra-Low-Power Arm Cortex-M4 with FPU-Based Microcontroller (MCU) with 512KB Flash and 160KB SRAM General Description Benefits and Features DARWIN is a new breed of low-power microcontrollers High-Efficiency Microcontroller for Wearable Devices built to thrive in the rapidly evolving Internet of Things (IoT). Internal Oscillator Operates Up to 96MHz They are smart, with the biggest memories in their class Low Power 4MHz Oscillator System Clock Option for Always-On Monitoring Applications and a massively scalable memory architecture. They run forever, thanks to wearable-grade power technology. They 512KB Flash Memory (256KB L Version) 160KB SRAM (128KB L Version) are also tough enough to withstand the most advanced cyberattacks. DARWIN microcontrollers are designed 8KB Instruction Cache 1.2V Core Supply Voltage to run any application imaginablein places where you 1.8V to 3.3V I/O wouldnt dream of sending other microcontrollers. Optional 3.3V 5% USB Supply Voltage Generation U microcontrollers are perfect for wearables Wide Operating Temperature: -30C to +85C and IoT applications that cannot afford to compromise Power Management Maximizes Uptime for Battery power or performance. The MAX32625/MAX32626 fea- Applications ture an Arm Cortex-M4 with FPU CPU that delivers 106A/MHz Active Current Executing from Cache high-efficiency signal processing, ultra-low power con- 49A/MHz Active Current Executing from Flash sumption and ease of use. Wake-Up to 96MHz Clock or 4MHz Clock Flexible power modes, an intelligent PMU, and dynamic 600nA Low Power Mode (LP0) Current with RTC clock and power gating optimize performance and power Enabled consumption for each application. Internal oscillators run 2.56W Ultra-Low Power Data Retention Sleep at 96MHz for high-performance or 4MHz to maximize Mode (LP1) with Fast 5s Wake-Up on 96MHz battery life in applications requiring always-on monitoring. Clock Source 2 Multiple SPI, UART, I C, 1-Wire master, and USB inter- 27A/MHz Low Power Mode (LP2) Current faces are provided. The four-input, 10-bit ADC with select- Optimal Peripheral Mix Provides Platform Scalability able references can monitor external sensors. SPI Execute in Place (SPIX) Engine for Memory All versions provide a hardware AES engine. The Expansion with Minimal Footprint MAX32626 provides a secure trust protection unit (TPU) Three SPI Masters, One SPI Slave with a modular arithmetic accelerator (MAA) for fast Three UARTs ECDSA, a hardware PRNG entropy generator, and a 2 2 Up to Two I C Masters, One I C Slave secure boot loader. The MAX32625L provides a reduced 1-Wire Master 256KB of flash memory and 128KB of SRAM. Full-Speed USB 2.0 Device with Internal Transceiver Sixteen Pulse Train (PWM) Engines Applications Six 32-Bit Timers and 3 Watchdog Timers Sports Watches Up to 40 General-Purpose I/O Pins Fitness Monitors 10-Bit Delta-Sigma ADC Operating at 7.8ksps Wearable Medical Patches AES -128, -192, -256 Portable Medical Devices RTC Calibration Output Sensor Hubs Secure Valuable IP and Data with Robust Internal Hardware Security (MAX32626 Only) Trust Protection Unit (TPU) Provides ECDSA and Modular Arithmetic Acceleration Support Ordering Information appears at end of data sheet. True Random Number Generator Arm and Cortex are registered trademarks of Arm Limited Secure Boot Loader (or its subsidiaries) in the US and/or elsewhere. 1-Wire is a registered trademark of Maxim Integrated Products, Inc. 19-8596 Rev 6 2/20MAX32625/MAX32626 Ultra-Low-Power Arm Cortex-M4 with FPU-Based Microcontroller (MCU) with 512KB Flash and 160KB SRAM TABLE OF CONTENTS General Description ............................................................................ 1 Applications .................................................................................. 1 Benefits and Features .......................................................................... 1 Simplified Block Diagram........................................................................ 4 Absolute Maximum Ratings ...................................................................... 5 Package Information ........................................................................... 5 63 WLP 5 68 TQFN . 5 Electrical Characteristics ........................................................................ 6 Electrical CharacteristicsADC ................................................................. 10 Electrical CharacteristicsUSB ..................................................................11 Electrical CharacteristicsSPI Master / SPIX Master ................................................ 12 Electrical CharacteristicsSPI Slave ............................................................. 13 2 Electrical CharacteristicsI C Bus............................................................... 13 Pin Configurations ............................................................................ 14 Pin Description ............................................................................... 16 Detailed Description........................................................................... 19 MAX32625/MAX32626 . 19 ARM Cortex-M4 with FPU Processor 19 Power Operating Modes 19 Low Power Mode 0 (LP0) 19 Low Power Mode 1 (LP1) . 19 Low Power Mode 2 (LP2) 19 Low Power Mode 3 (LP3) 19 Analog-to-Digital Converter . 19 Pulse Train Engine 20 Clocking Scheme . 20 Interrupt Sources . 21 Real-Time Clock and Wake-Up Timer . 21 General-Purpose I/O and Special Function Pins . 21 CRC Module . 21 Watchdog Timers . 21 Programmable Timers 22 Serial Peripherals . 22 USB . 22 2 I C Master and Slave 23 SPI (Master) . 23 Maxim Integrated 2 www.maximintegrated.com