M48T86

M48T86 5.0 V PC real-time clock Not For New Design Features ■ Drop-in replacement for PC computer clock/calendar ■ Counts seconds, minutes, hours, days, day of )the week, date, month, and year with leap year t(scompensation c■ Clock accuracy better than ±1 minute per umonth rod )■ Interfaced with software as 128 RAM locations: P t(s– 14 bytes of clock and control registers te c– 114 bytes of general purpose RAM le u■ Selectable bus timing (Intel/Motorola) so rod■ Three interrupts are separately software- maskable and testable b P– Time-of-day alarm (once/second to - O teonce/day) ) le– Periodic rates from 122 µs to 500 ms t(s so– End-of-clock update cycle c b■ Programmable square wave output du - O■ 10 years of data retention and clock operation ro )in the absence of power P t(s■ Self-contained battery and crystal in the te cCAPHAT™ DIP package le u■ Packaging includes a 28-lead SOIC and so rodSNAPHAT® top (to be ordered separately) ■ SOIC pack...