Datasheet > M48T86_07

M48T86_07

更新时间： 2024-11-11 03:12:35

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		PC 时钟
页数	文件大小	规格书
36页	319K
描述
5.0 V PC real-time clock

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中文翻译

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数据手册

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M48T86_07 数据手册

M48T86

5.0 V PC real-time clock

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

compensation

■ Clock accuracy better than 1 minute per

month

■ Interfaced with software as 128 RAM locations:

– 14 bytes of clock and control registers

– 114 bytes of general purpose RAM

PCDIP24 (PC)

Battery/Crystal

CAPHAT

■ Selectable bus timing (Intel/Motorola)

■ Three interrupts are separately software-

maskable and testable

– Time-of-day alarm (once/second to

once/day)

SNAPHAT (SH)

Battery/Crystal

– Periodic rates from 122µs to 500ms

– End-of-clock update cycle

■ Programmable square wave output

■ 10 years of data retention and clock operation

in the absence of power

■ Self-contained battery and crystal in the caphat

dip package

■ Packaging includes a 28-lead SOIC and

Snaphat top (to be ordered separately)

■ SOIC package provides direct connection for a

SOH28 (MH)

snaphat top contains the battery and crystal

■ Pin and function compatible with bq3285/7A

and DS12887

February 2007

Rev 5

1/36

www.st.com

12 3 4 5 6 7...36

中文翻译

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