Maxim Integrated MAX32664, Руководство пользователя

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MAX32664 Variants
The MAX32664 is pre-programmed with bootloader software that accepts in-application programming of
Maxim application code which consists of algorithms and the associated sensor driver. The MAX32664 is
used as a sensor hub controller.
The algorithm/application code provides processed and/or raw data through the I 2 C interface. Several
variants of the MAX32664 exist based on the target application. These variants come pre-programmed
with a bootloader that only accepts the matching encryption keys for the part (e.g., the MAX32664GWEA
bootloader is pre-programmed with the A encryption key, reference designs are programmed with Z
keying, etc.). Designers should use the table below in order to select the correctly keyed part
..
Table 1. MAX32664 Variants, Matching Algorithms, and Reference Designs
PART NUMBER APPLICATION ALGORITHM/FIRMWARE BOOTLOADER
KEY
MAXIM REFERENCE
DESIGN
MAX32664GWEA MaximFast: Maxim Integrated
®
finger-based heart-
rate and SpO
2
monitoring algorithm (100Hz
sampling). The MaximFast algorithm is compatible
with the sensor hub combination of the
MAX32
44 6 64 GWEA, MAX30101 AFE, and KX-122
accelerometer. It is recommended, but not
mandatory, to use an accelerometer with the
MaximFast algorithm. Do not enable the
accelerometer if there is no accelerometer in your
design. If the KX-122 accelerometer is not installed
in the design and external accelerometer data is
supplied, then the accelerometer should use the
100Hz sampling rate.
Automatic gain control (AGC)
for MaximFast . If the
AGC is enabled, the LED currents and pulse width
are automatically determined by the algorithm. If
the AGC is not enabled, the LED currents and pulse
width registers should be configured by the host
software.
A MAXREFDES220#