SLYA068A May   2023  – December 2023 TMAG3001 , TMAG5253

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Low Power Modes
    1. 2.1 Power Cycling
      1. 2.1.1 Self Duty Cycled Low Power Operation
    2. 2.2 Conversion on Demand
    3. 2.3 Wake on Detection
    4. 2.4 Wake on Change
  6. 3Low Power Modes with Multiple Sensors
  7. 4Low Power Mode Design Examples
    1. 4.1 Design Example Scenario 2
    2. 4.2 Design Example Scenario 2
  8. 5Summary
  9. 6References
  10. 7Revision History

Wake on Detection

Additionally, in wake up and sleep mode, digital 3D Hall sensors similar to the TMAG5273 can be configured to generate an interrupt once a certain threshold is crossed. This process is particularly useful in cases, where the user interfaces like buttons or triggers are used to wake up the system. A device like TMAG5273 can be placed in wake up and sleep mode, where the sensor wakes up after a preconfigured sleep time interval, takes a measurement and goes back to sleep. If the measurement crosses a set threshold, the interrupt condition is met. The device can proceed to exit wake and sleep (W&S) mode and can go to stand-by mode as shown in Figure 2-5.

GUID-20210918-SS0I-SPCP-683X-1XP6PZWLHTXS-low.svgFigure 2-5 TMAG5273 in Wake and Sleep Mode, Responding to a Threshold Crossing