Analog Devices Inc./Maxim Integrated MAX32625ITK+

Overview

MAX32625ITK+ 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, hardware AES-128/-192/-256 encryption, and operates from 1.2V core supply with -30°C to +85°C industrial temperature range - enabling multi-year battery life in sports watches and medical patches.

For engineers reviewing the MAX32625ITK+ datasheet, MAX32625ITK+ pinout, MAX32625ITK+ application, or MAX32625ITK+ equivalent, this page provides verified technical context, low-power mode current values (600nA LP0, 2.56μW LP1), USB 2.0 full-speed interface with internal transceiver, 10-bit delta-sigma ADC at 7.8ksps, and confirmed WLP-63 package mapping - all essential for power-constrained embedded design validation.

Technical Context

The MAX32625ITK+ 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 monitoring. Its Peripheral Management Unit (PMU) enables dynamic clock/power gating across six low-power modes (LP0–LP3), with sub-microamp retention (600nA LP0, 1.06μA LP1) and 5μs wake-up from LP1 using the 96MHz clock source.

It integrates a 10-bit delta-sigma ADC with selectable references (0.05V–5.5V input range on AIN0–AIN1), three SPI masters (including SPIX for external memory expansion), three UARTs, two I²C masters, 1-Wire master, full-speed USB 2.0 device controller with integrated PHY, and sixteen pulse train engines - all accessible via up to 40 GPIO pins with individually configurable VDDIO/VDDIOH supplies.

Key Specifications

Pinout & Package

MAX32625ITK+ is packaged in a 2.13mm × 2.28mm, 0.4mm pitch Wafer-Level Package (WLP-63) with 63 solder bumps. The package supports fine-pitch PCB assembly and is RoHS-compliant (indicated by '+' suffix).

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-QIAA and TI MSP432E401Y, MAX32625ITK+ uniquely balances ultra-low static power (600nA LP0), integrated USB 2.0, and analog-rich peripheral set in a miniature WLP - making it optimal for space-constrained, USB-requiring, long-life wearable medical and fitness devices where RF is handled externally.

Availability

MAX32625ITK+ 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+ 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, designs precision analog, mixed-signal, and high-reliability semiconductor solutions for industrial, medical, and communications markets.

The MAX32625/MAX32626 DARWIN family targets ultra-low-power wearable and IoT endpoints, emphasizing battery longevity, cryptographic security, and integrated analog front-ends - reducing bill-of-materials and PCB area versus discrete MCU + PMU + ADC + USB PHY solutions.

FAQ

What is the package type and pin count of the MAX32625ITK+?

The MAX32625ITK+ uses a 2.13mm × 2.28mm wafer-level package (WLP-63) with 63 solder bumps. This ultra-compact, RoHS-compliant package supports fine-pitch PCB assembly and is optimized for space-constrained wearable applications. Pin assignments are documented in the MAX32625/MAX32626 datasheet Section 14 (Pin Configurations) and Section 16 (Pin Description). The MAX32625ITK+ shares the same WLP-63 footprint as other variants in the family.

Does the MAX32625ITK+ include hardware AES encryption?

Yes, the MAX32625ITK+ includes a dedicated hardware AES engine supporting AES-128, AES-192, and AES-256 encryption and decryption. This offloads cryptographic operations from the Cortex-M4 CPU, preserves real-time performance, and ensures deterministic execution time for secure firmware updates and data-at-rest protection. The MAX32625ITK+ does not include the Trust Protection Unit (TPU) found in the MAX32626 variant, so ECDSA and modular arithmetic acceleration are not available.

What are the key low-power operating modes and their current consumption for MAX32625ITK+?

The MAX32625ITK+ offers six low-power modes. Key values include: LP0 mode draws 600nA with RTC enabled; LP1 mode consumes 2.56μW with full SRAM/flash retention and 5μs wake-up; LP2 mode draws 27μA/MHz during peripheral-active sleep. All values are measured at TA = +25°C with VDD12 = 1.2V and confirmed in the Electrical Characteristics table (pages 6–7 of the datasheet). These modes are managed by the integrated Peripheral Management Unit (PMU).

Is the MAX32625ITK+ compatible with USB 2.0 full-speed communication without external components?

Yes, the MAX32625ITK+ integrates a full-speed USB 2.0 device controller with an internal transceiver. It requires only standard USB termination (1.5kΩ pull-up on DP) and compliant 3.3V ±5% VDDB supply - no external PHY, resistors, or capacitors are needed. The internal oscillator is factory-trimmed to ±0.25% for USB compliance, and timing parameters (rise/fall times, differential sensitivity) meet USB 2.0 specification limits as verified in the Electrical Characteristics-USB section (page 11).

What is the ADC resolution, sampling rate, and input voltage range supported by MAX32625ITK+?

The MAX32625ITK+ features a 10-bit delta-sigma ADC with 7.8ksps maximum sample rate, ±2 LSB integral nonlinearity, and 58.5dB SNR. Input voltage range is configurable: AIN0–AIN1 accept 0.05V–5.5V (buffered) or 0.05V–VDD18 (unbuffered); AIN2–AIN3 accept 0.05V–VDD18. These specifications are fully characterized and guaranteed over -30°C to +85°C, as detailed in the Electrical Characteristics-ADC section (pages 10–11).