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DS12885T/TR

更新时间： 2024-09-21 22:18:51

品牌	Logo	应用领域
达拉斯 - DALLAS		时钟
页数	文件大小	规格书
4页	134K
描述
Real-Time Clock

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中文翻译

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数据手册

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DS12885T/TR 数据手册

DS12885/DS12885Q/DS12885T

Real-Time Clock

www.maxim-ic.com

FEATURES

§ Drop-in replacement for IBM AT computer

clock/calendar

PIN ASSIGNMENT (Top View)

§ Pin configuration closely matches

MC146818B and DS1285

§ 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-hour 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 as 128 RAM

locations

DS12885Q

28 PLCC

§ 14 bytes of clock and control registers

§ 114 bytes of general purpose RAM

§ Programmable square-wave output signal

bus-compatible interrupt signals (IRQ )

§ Three interrupts are separately software-

maskable and testable

§ Time-of-day alarm once/second to once/day

§ Periodic rates from 122ms to 500ms

§ End-of-clock update cycle

§ Optional 28-pin PLCC surface mount package

or 32-pin TQFP

DS12885T

32 TQFP

§ Optional industrial temperature range

available

§ Underwriters Laboratory (UL) recognized

Package Dimension Information

http://www.maxim-ic.com/TechSupport/DallasPackInfo.htm

Note:Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: http://www.maxim-ic.com/errata.

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