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DS17287-3+

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, 2.7V至3.7V, EDIP-24

MAXIM INTEGRATED PRODUCTS DS17287-3+
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制造商产品编号:
DS17287-3+
库存编号
2515434
技术数据表:
DS17287-3+   Datasheet
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产品概述

The DS17287-3+ is a real time clock in 24 pin EDIP package. It provides a real time clock/calendar, one time of day alarm, three maskable interrupts with a common interrupt output, a programmable square wave and 114bytes of battery-backed NV SRAM. It integrates a quartz crystal and lithium energy source. The power control circuitry allows the system to be powered on by an external stimulus such as a keyboard or by a time and date (wake-up) alarm. The active-low power-on reset output pin is triggered by one or either of these events and is used to turn on an external power supply. This pin is under software control so that when a task is complete, the system power can shut down. The date at the end of the month is automatically adjusted for months with fewer than 31 days including correction for leap years. A precision temperature-compensated circuit monitors the status of VCC. If a primary power failure is detected, the device automatically switches to a backup supply.
  • Supply voltage range is 2.7V to 3.7V
  • Operating temperature range from 0°C to 70°C
  • RTC counts seconds, minutes, hours, day, date, month & year with leap year compensation through 2099
  • SMI recovery stack
  • Crystal select bit allows operation with 6pF or 12.5pF crystal
  • 12hour or 24hour clock with AM and PM in 12hour mode
  • UL recognized
  • RAM clear function
  • Interrupt output with six independently maskable interrupt flags
  • Programmable square wave output

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

:
2.7V

:
3.7V

:
EDIP

:
24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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