Analog Devices Inc./Maxim Integrated MAX32625ITK+T

Overview

MAX32625ITK+T from Maxim Integrated is an ultra-low-power Arm® Cortex®-M4 with FPU microcontroller designed for wearable and IoT edge nodes. It delivers 96MHz peak performance, 512KB flash/160KB SRAM, 10-bit delta-sigma ADC (7.8ksps), hardware AES-128/192/256, and operates from 1.2V core / 1.8–3.3V I/O across –30°C to +85°C - enabling multi-year battery life in sports watches and medical patches.

For engineers reviewing the MAX32625ITK+T datasheet, MAX32625ITK+T pinout, MAX32625ITK+T application, or MAX32625ITK+T equivalent, key selection criteria include LP1 sleep current (1.06μA), 5μs wake-up from ultra-low-power retention mode, SPIX engine for external memory expansion, and integrated USB 2.0 full-speed transceiver with no external PHY required.

Technical Context

The MAX32625ITK+T implements a dual-oscillator clock architecture: a factory-trimmed 96MHz internal relaxation oscillator for high-performance execution and a 4MHz RC oscillator optimized for always-on sensor monitoring. Its Peripheral Management Unit (PMU) enables dynamic power gating across six low-power modes (LP0–LP3), with LP1 delivering 2.56μW data-retentive sleep and sub-5μs wake-up latency.

It integrates a 10-bit delta-sigma ADC with selectable input ranges (0.05–5.5V), four analog inputs, and programmable reference scaling. The MCU supports up to 40 GPIO with individually configurable VDDIO/VDDIOH supplies, three SPI masters, two I²C masters, three UARTs, 1-Wire master, and full-speed USB 2.0 with internal transceiver - all managed via AHB/APB bus matrix and NVIC interrupt controller.

Key Specifications

Pinout & Package

MAX32625ITK+T is housed in a 63-ball Wafer-Level Package (WLP), 3.3mm × 3.3mm, 0.4mm pitch, with 40 general-purpose I/O pins supporting multiple peripheral functions. Ball mapping includes dedicated USB DP/DM, JTAG/SWD debug, RTC crystal, ADC inputs (AIN0–AIN3), and flexible power domains (VDD12, VDD18, VDDIO, VDDIOH, VRTC).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M4 microcontroller applications.

Compared with Nordic nRF52840 and TI MSP432E401Y, the MAX32625ITK+T uniquely balances ultra-low-power analog acquisition (10-bit ΔΣ ADC), integrated USB 2.0, hardware AES, and sub-1μA retention sleep - making it optimal for regulated medical wearables where security, precision, and battery longevity are co-primary constraints.

Availability

MAX32625ITK+T is available at Aetrix Electronics and suitable for sports watches, wearable medical patches, and portable diagnostic devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MAX32625ITK+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, power management, and secure microcontrollers for demanding industrial, medical, and IoT applications.

The MAX32625/MAX32626 family was engineered specifically for battery-constrained wearable and medical edge devices - prioritizing sub-μA sleep, integrated security, and analog signal integrity over raw compute throughput.

FAQ

What is the package type and footprint of the MAX32625ITK+T?

The MAX32625ITK+T uses a 63-ball Wafer-Level Package (WLP) with 3.3mm × 3.3mm body size and 0.4mm ball pitch. Its land pattern follows Maxim's Application Note 1891 (Outline 21-100084). This ultra-compact package enables high-density layouts in space-constrained wearables like smart rings and ECG patches, and supports reflow soldering at 260°C peak temperature.

Does the MAX32625ITK+T support USB without external components?

Yes, the MAX32625ITK+T integrates a full-speed USB 2.0 transceiver with on-die termination and a programmable 1.5kΩ DP pullup resistor. No external PHY, resistors, or capacitors are required for basic USB device operation - significantly reducing BOM count and PCB area compared to discrete USB solutions. VDDB must be supplied at 3.3V ±5%.

What are the lowest-power operating modes of the MAX32625ITK+T?

The MAX32625ITK+T offers four low-power modes. LP0 draws 600nA with RTC enabled; LP1 consumes 1.06μA while retaining full SRAM and waking in 5μs; LP2 draws 27μA/MHz in sleep with selective peripheral wake-up. These modes are controlled via the PMU and support dynamic voltage/frequency scaling - critical for extending battery life in always-on biosensors.

Can the MAX32625ITK+T interface directly with 5V sensors?

Yes - the AIN0 and AIN1 inputs tolerate up to 5.5V regardless of VDDIO level, enabling direct connection to legacy 5V analog sensors (e.g., thermistors, pressure bridges) without external level-shifting circuitry. AIN2/AIN3 are limited to 3.6V. Input leakage remains below 4nA, preserving accuracy in high-impedance sensor networks.

Is hardware AES acceleration available on the MAX32625ITK+T?

Yes, the MAX32625ITK+T includes a dedicated hardware AES-128/192/256 engine that operates independently of the CPU. This enables zero-overhead encryption of firmware images, BLE link keys, and patient health data - meeting HIPAA and ISO 13485 requirements for secure medical device communication without degrading real-time sensor processing performance.