DS1305 PDF File ( Datasheet )

DS1305 Serial Alarm Real Time Clock (RTC) www.dalsemi.com FEATURES Real time clock counts seconds, minutes, hours, date of the month, month, day of the week and year with leap year compensation valid up to 2100 96-byte nonvolatile RAM for data storage Two time-of-day alarms programmable on combination of seconds, minutes, hours and day of the week Serial interface supports Motorola serial peripheral interface (SPI) serial data ports or standard 3-wire interface Burst mode for reading, writing s