Parallax 29125 DS1302 Real Time Clock Module provides a real time clock with a 32kHz crystal and an on-board battery backup. All of these are enclosed in a SIP module that can be plugged into a breadboard. DS1302 provides seconds, minutes, hours, date, day of the week, and year with leap year compensation upto the year 2100. This Real Time Clock uses a 24-hour mode or a 12-hour mode with an AM/PM indicator. DS1302 Real Time Clock Module also has 31 bytes of RAM and a battery backup. This Real Time Clock can show time, store time or make time based decisions in a small, compact form-factor.
