Full PDF Text Transcription for DS1287 (Reference)
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DS1287. For precise diagrams, and layout, please refer to the original PDF.
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC SQW NC NC NC IRQ RESET DS NC R/W AS CS • Drop-in replacement for IBM AT computer clock/calendar • Pin compatible with the MC146818A • Totally nonvolatile with over 10 years of operation in the absence of power • Self-contained • Counts subsystem includes lithium, quartz, and support circuitry seconds, minutes, hours, day of the week, date, month, and year with leap year compensation alarm • Binary or BCD representation of time, calendar, and • 12- or 24-hour clock with AM and PM in 12-hour mode • Daylight Savings Time option • Selectable between Motorola an
DS1287 Datasheet
