DS12885S

real -time clock plus RAM, PLCC, -0.3V to +6.0V, DS12885S, 114 bytes

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Price:: US $0.40~0.85 / piece [Get Latest Price]

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	US $0.40~0.85

PartNumber:: DS12885S

Brand:: Maxim Integrated Products - Maxim | Pack: SOP | D/C: 11+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2012-08-24

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Part Number:DS12885S
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Product Summary

The DS12885S is a real -time clock plus RAM designed to be a direct replacement for the DS1285. The DS12885S 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. An external crystal and battery are the only components required to maintain time-of-day and memory status in the absence of power.

Parametrics

DS12885S absolute maximum ratings: (1)Voltage Range on VCC Pin Relative to Ground: -0.3V to +6.0V; (2)Operating Temperature Range: 0℃ to +70℃; (3)Operating Temperature Range: -40℃ to +85℃; (4)Storage Temperature Range: -55℃ to +125℃; (5)Soldering Temperature (leads, 10s): +260℃.

Features

DS12885S features: (1)Drop- in replacement for IBM AT computer clock/calendar; (2)Pin configuration closely matches MC146818B and DS1285; (3)Counts seconds, minutes, hours, days, day of the week, date, month, and year with leap-year compensation valid up to 2100; (4)Binary or BCD representation of time, calendar, and alarm ; (5)12-hour or 24-hour clock with AM and PM in 12-hour mode; (6)Daylight Savings Time option; (7)Selectable between Motorola and Intel bus timing; (8)Multiplex bus for pin efficiency; (9)Interfaced with software as 128 RAM locations; (10)14 bytes of clock and control registers; (11)114 bytes of general purpose RAM; (12)Programmable square-wave output signal bus-compatible interrupt signals ( IRQ ); (13)Three interrupts are separately software-maskable and testable; (14)Time-of-day alarm once/second to once/day; (15)Periodic rates from 122μs to 500ms; (16)End-of-clock update cycle; (17)Optional 28-pin PLCC surface mount package or 32-pin TQFP; (18)Optional industrial temperature range available; (19)Underwriters Laboratory (UL) recognized.