Inquiry Regarding Power Modes for R5F10RGCGFB in a Digital Timer Application

Dear Renesas Support Team,

We are currently using the R5F10RGCGFB microcontroller in our digital timer application. While reviewing the datasheet, we came across the following power-saving modes:

• Ultra-low power consumption technology
  • VDD = single power supply voltage of 1.6 to 5.5 V
  • HALT mode
  • STOP mode
  • SNOOZE mode

Our concern is as follows:

If the power supply to the digital timer is cut off, we need to ensure that the current time and user-inputted data are retained while consuming the least amount of battery power. Among the available power-saving modes, which one would be the most suitable for achieving this requirement?

We would appreciate your guidance on the best approach for our application.

Best regards,

LEE