NE555/LM555 - Timer IC
The 555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by..
DS1307 - Real Time Clock
DS1307 - Serial Real Time Clock
Real-time clock counts seconds, minutes, hours, date, month, day, year, and leap year to 2100
56-bytes general-purpose NV RAM
Accuracy > 2 minutes/month at 25oC
Automatic power management circuitry&nb..