Sleep Mode Operation

This section captures the power profile of the WLR089 device measured during the Standby Sleep mode under various clock sources for the RTC and the main clock. The following plots illustrate the power consumption values captured during the Standby Sleep mode with various clock sources used for the RTC and main clock.

• Case 1
  • Main clock source (GCLK0) – DFLL (pre-scaled to 8 MHZ with XOSC32K as a reference)
  • RTC clock source – XOSC32K
  Figure 1. Standby Sleep Mode Operation with DFLL Source to Main Clock and XOSC32K Source to RTC

  
  
  

• Case 2
  • Main clock source (GCLK0) – DFLL (pre-scaled to 8 MHZ with XOSC32K as reference)
  • RTC clock source – ULP32K
  Figure 2. Standby Sleep Mode Operation with ULP32K Source to RTC and DFLL Source to Main Clock

  
  
  

• Case 3
  • Main clock source – OSC16M
  • RTC clock source – ULP32K
  Figure 3. Standby Sleep mode Operation with ULP32K Source to RTC and OSC16M Source to Main Clock