RTC DS1307 vs Arduino EEPROM

Forum 2005-2010 (read only) General Frequently-Asked Questions
1

Hello

I'm preparing an alarm module.
I would like to know if values like HourAlarmON,HourAlarmOFF, MinuteAlarmON,MinuteAlarmOFF... is better to save them on RTC EEPROM or Arduino EEPROM? Or no difference on behaviour or lifetime...

Please let me know
Thanks on advance
Best regards
Pedro Ferrer

2

You can save these values in the RTC's (DS1307) RAM. They will persist there as long as the backup battery is in place. The library for DS1307 does support this.

3

As suggested by florinc, the DS1307 does NOT have EEPROM. It is battery-backed RAM.