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