Maxim Integrated MAX32664 Microcontroller User Guide

This user guide details the operation, programming modes, and I2C communication protocols for the Maxim Integrated MAX32664 low-power microcontroller sensor…

Brand: Maxim Integrated
Category: microcontrollers
Document type: User Manual
Language: English
Pages: 35
File format: PDF
File size: 840 KB
Published: 13 October, 2026
Updated: 13 October, 2026
MD5 checksum: 9A5F939576D055F4F52472EDBD38225C
PDF: Maxim Integrated MAX32664 Microcontroller User Guide PDF

About this manual

The document serves as a comprehensive user guide for the MAX32664, a pre-programmed microcontroller designed to act as a sensor hub. It provides processed data such as heart rate and SpO2 when combined with appropriate optical sensors. The device features a fast-mode I2C slave interface for host communication and a dedicated I2C interface for connecting to sensors.

What's inside

Introduction
MAX32664 Variants
Maxim Reference Designs
GPIOs and RSTN Pin
Bootup and Application Mode
Communications over I2C
In-Application Programming

Specifications

Form Factor	1.6mm x 1.6mm 16-bump WLP
I2C Write Address	0xAA
I2C Read Address	0xAB
Maximum I2C Data Rate	3400 Kbps

Frequently asked questions

How do you enter bootloader mode?

Set the RSTN pin low for 10ms, then set the MFIO pin to low while RSTN is low. After 10ms, set RSTN high and wait an additional 50ms.

How do you enter application mode?

Set the RSTN pin low for 10ms, then set the MFIO pin to high while RSTN is low. After 10ms, set RSTN high and wait an additional 50ms.

What are the GPIO functions for I2C communication?

GPIO P0.2 is used as the SCL line and GPIO P0.3 is used as the SDA line.

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