Availability
Published
Product Code
DDT-2210-813
Product Item Code
FTB-FB521
Device Manufacturer
Fitbit
Device Type
Wearable
Deep Dive Teardown of the Fitbit Sense 2 FB521 Smartwatch
The Fitbit Sense 2 FB521 smartwatch and activity tracker is based on the Ambiq Micro programmable Apollo4 Plus SoC controller. The controller has a built-in one-core 96 -192 MHz ARM Cortex-M4 processor. The IC package measures 5 x 5 mm and has 146 connections.
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