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Description
Real Time Clock (RTC) IC Clock/Calendar 114B Parallel 24-DIP Module (0.600", 15.24mm)
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FEATURES
● Drop-in replacement for IBM AT computer clock/calendar
● Pin-compatible with the MC146818Band DS1287
● Totally nonvolatile with over 10 years of operation in the absence of power
● Self contained subsystem includes lithium,quartz, and support circuitry
● Counts seconds, minutes, hours, days, day of the week, date, month, and year with leap year compensation valid up to 2100
● Binary or BCD representation of time, calendar, and alarm
● 12-or 24-hour clock with AM and PM in 12-hour mode
● Daylight Savings Time option
● Selectable between Motorola and Intel bus timing
● Multiplex bus for pin efficiency
● Interfaced with software as128RAM locations
- 14 bytes of clock and control registers
- 114 bytes of general purpose RAM
● Programmable square wave output signal
● Bus-compatible interrupt signals ( RQ )
● Three interruptsare separately software-maskable and testable
- Time-of day alarm once/second to once/day
- Periodic rates from 122 ms to 500 ms-End of clock update cycle
DESCRIPTION
The DS12887 Real Time Clock plus RAM is designed to be a direct replacement for the DS1287.The DS12887 is identical in form, fit, and function to the DS1287, and has an additional 64 bytes of general purpose RAM. Access to this additional RAM space is determined by the logic level presented on AD6 during the address portion of an access cycle. A lithium energy source, quartz crystal, and write-protection circuitry are contained within a 24-pin dual in-line package.As such,the DS12887 is a complete subsystem replacing 16 components in a typical application. The functions include a nonvolatile time-of-day clock, an alarm, a one-hundred-year calendar, programmable interrupt, square wave generator, and 114 bytes of nonvolatile static RAM. The real time clock is distinctive in that time-of-day and memory are maintained even in the absence of power.
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10000 buyer reviews from United States
Amanda Cox
Length of registration:7 years
I recently purchased the DS12887A+ integrated circuit from Utsource and I am very pleased with the product. The circuit arrived quickly and was well packaged. After testing the circuit, I found that it performed exactly as expected and was of high quality. I am very satisfied with my purchase and would highly recommend Utsource to anyone looking for integrated circuits.
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03/17/2023
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All UTSOURCE purchases have a 60 days money back return policy, plus a 90 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
DS12887
DS12887 has several brands around the world that may have alternate names for DS12887 due to regional differences or acquisition. DS12887 may also be known as the following names:
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Unit Price:3.35280
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