General Description
In the DARWIN family, the MAX32662 is an ultra-low-power, cost-effective, highly integrated 32-bit microcontroller designed for small battery-powered devices. It combines a flexible peripheral and feature mix with the powerful Arm® Cortex®-M4 processor with floating point unit (FPU) in a small form factor.
The MAX32662 enables complex edge-based designs without compromising battery life, and it also offers legacy designs an easy and cost optimal upgrade path from 8- or 16-bit microcontrollers.
Integrating 256KB of flash memory and 80KB of SRAM, the MAX32662 easily accommodates sensor code and complex algorithms.
Peripherals include SPI, UART, I2C, I2S, CAN 2.0B, and a 12-bit ADC.
A ROM-based secure bootloader uses 256-bit elliptic curve digital signature algorithm (ECDSA-256) encryption to ensure trusted and authenticated updates of customer software.
The device is available in a 5mm x 5mm, 32-pin TQFN-EP.

Benefits and Features
•High-Efficiency Microcontroller for Low-Power, High-Reliability Devices
•256KB Flash
•80KB SRAM, Optionally Preserved in LowestPower BACKUP Mode
•16KB Unified Cache
•Memory Protection Unit (MPU)
•Dual- or Single-Supply Operation: 1.7V to 3.6V
•Wide Operating Temperature: -40°C to +105°C
•Flexible Clock Sources
•Internal High-Speed 100MHz
•Internal Low-Power 7.3728MHz
•Ultra-Low-Power 80kHz
•16MHz–32MHz (External Crystal Required)
•32.768kHz (External Crystal Required)
•External Clock Inputs for CPU and Low-PowerTimer
•Power Management Maximizes Uptime for BatteryApplications
•50μA/MHz at 0.9V up to 12MHz (CoreMark®) inACTIVE Mode
•44μA/MHz at 1.1V up to 100MHz (While(1)) inACTIVE Mode
•2.15μA Full Memory Retention Current in BACKUPMode at VDDIO = 1.8V
•2.4μA Full Memory Retention Current in BACKUPMode at VDDIO = 3.3V
•350nA Ultra-Low-Power RTC
•Wakeup from Low-Power Timer
•Optimal Peripheral Mix Provides Platform Scalability
•Up to 21 General-Purpose I/O Pins
•4-Channel, 12-Bit, 1Msps ADC
•Two SPI Controller/Target
•One I2S Controller/Target
•Two 4-Wire UART
•Two I2C Controller/Target
•One CAN 2.0B Controller
•4-Channel Standard DMA Controller
•Three 32-Bit Timers
•One 32-Bit Low-Power Timer
•One Watchdog Timer
•CMOS-Level 32.768kHz Calibration Output
•AES-128/192/256 Hardware Accelerator

Applications
•Sports Watches
•Fitness Monitors
•Wearable Medical Patches
•Portable Medical Devices
•Industrial Sensors
•IoT