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DS12885Q+

报警实时时钟芯片, 时期时间格式 (星期/日/月/年 时:分:秒), 多路复用, 4.5V至5.5V, PLCC-28

MAXIM INTEGRATED PRODUCTS DS12885Q+
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制造商产品编号:
DS12885Q+
库存编号
2515409
技术数据表:
DS12885Q+   Datasheet
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DS12885Q+ 的替代之选

产品概述

The DS12885Q+ is a real time clock (RTC) in 28 pin PLCC package. This RTC is designed to be direct replacements for the DS1285. The device provide a real time clock/calendar, one time of day alarm, three maskable interrupts with a common interrupt output, a programmable square wave and 114 bytes of battery backed static RAM. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years. The device also operate in either 24-hour or 12-hour format with an AM/PM indicator. A precision temperature-compensated circuit monitors the status of VCC. If a primary power failure is detected device automatically switches to a backup supply. A lithium coin-cell battery can be connected to VBAT input pin on IC to maintain time and date operation when primary power is absent. It is used in embedded systems, utility meters and network hubs, bridges and routers.
  • Supply voltage range is 4.5V to 5.5V
  • Operating temperature range from 0°C to 70°C & periodic rates from 122µs to 500ms
  • Drop-in replacement for IBM AT computer clock/calendar, 14 bytes of clock and control registers
  • Counts seconds, minutes, hours, day, date, month and year with leap year compensation through 2099
  • Binary or BCD time representation, daylight saving time option & end of clock update cycle flag
  • Selectable intel or motorola bus timing, interfaced with software as 128 RAM locations
  • Time of day alarm once per second to once per day, RAM clear function
  • Programmable square-wave output
  • UL recognized

应用

时钟与计时

产品信息

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:
星期;日;月;年

:
时:分:秒

:
实时时钟闹钟

:
4.5V

:
5.5V

:
PLCC

:
28引脚

:
复用

:
0°C

:
70°C

:
-

:
-

:
MSL 1 -无限制
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技术文档 (1)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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