Internet of Things
Low-power connected nodes require appropriate local timing for battery life, wake-up scheduling, size and operating conditions.
Engineering selection notes
Low power
Review current and timing in run, standby, shutdown and wake-up states. Calculate average power using the actual duty cycle.
Size
Check package, pinout and layout against PCB constraints, including decoupling, routing and manufacturability.
Time reference
Define accuracy and resynchronization intervals, then review reference, temperature error and power-loss behavior in the full timekeeping chain.
From requirements to validation
- Record frequency, stability, interface, supply, package and temperature requirements.
- Filter local catalog models and download the manufacturer datasheet to verify full test conditions.
- Confirm configuration, qualification and lead time for the ordering code, then validate schematic, layout and prototype.
Industry applications
Smart Watches and Fitness Trackers
Smart Watches and Fitness Trackers：Timing considerations for Smart Watches and Fitness Trackers. Low-power connected nodes require appropriate local timing for battery life, wake-up scheduling, size and operating conditions.
View details →Prepared from public SiTime information with original overviews and reading notes. Consult the local manufacturer PDFs for device conditions.