Maxim Integrated Page 3 of 15
Introduction
The MAX32664A is a variant of the MAX32664 sensor-hub family that enables users to capture
raw data as well as calculated heart-rate and SpO
2
data through finger contact. The MAX32664A
is preprogrammed with the firmware, drivers, and algorithm that are required to interface with the
MAX30101 sensor device through an I
2
C master port. The I
2
C slave interface is dedicated to
establishing communication with a host microcontroller.
In order to properly capture and calculate the data, it is recommended that accelerometer data be
provided to the MAX32664A. The MAX32664A firmware includes the required drivers for the
Kionix
®
KX122 accelerometer, which is wired together with the MAX30101 to the same I
2
C port.
Alternatively, a host-side accelerometer can be used. In this case, the sampled accelerometer
data must be periodically reported to the MAX32664A by the host microcontroller.
This document provides the instructions necessary to create a solution with the MAX32664A
based on the MAXREFDES220# reference design.
Kionix is a registered trademark of Kionix, Inc.
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