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DS1553, DS1553P
64kB、非易失、Y2K兼容的时钟RAM


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状态
型号 状态
DS1553 状况:生产中,但该系列产品中的某些型号已经停产。请查看订购信息
DS1553P 状况:生产中,但该系列产品中的某些型号已经停产。请查看订购信息

概述
完整的数据资料 (PDF, 460kB)
英文 下载数据资料(PDF)下载
The DS1553 is a full-function, year-2000-compliant (Y2KC) real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and "8k x 8 nonvolatile static RAM (NV SRAM)." User access to all registers within the DS1553 is accomplished with a bytewide interface as shown in Figure 1. The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour BCD format. Corrections for day of month and leap year are made automatically.

本产品包含金属锂电池。 参见含电池设备的运输要求使用标准。

关键特性
  • Integrated NV SRAM, RTC, Crystal, Power-Fail Control Circuit, and Lithium Energy Source
  • Clock Registers are Accessed Identically to the Static RAM; These Registers are Resident in the 16 Top RAM Locations
  • Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
  • Precision Power-On Reset
  • Programmable Watchdog Timer and RTC Alarm
  • BCD-Coded Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap Year Compensation Valid Up to the Year 2100
  • Battery Voltage Level Indicator Flag
  • Power-Fail Write Protection Allows for ±10% VCC Power-Supply Tolerance
  • Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
  • 通过美国保险商实验室协会(UL®)认证

Key Specifications:  Timekeeping & Real-Time Clocks
Part Number Functions Date/ Time Format Interface VSUPPLY
(V)
Memory Type Memory Size
(Bytes)
Time of Day Alarms Price
hh = sec/100 See Notes
DS1553  Watchdog Timekeeper YYYY-MM-DD/ HH:MM:SS Bytewide
3.3
5
NV SRAM 8K 1 $10.01 @1k
查看所有Timekeeping & Real-Time Clocks (80)

图表
DS1553、DS1553P:原理框图
原理框图

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    2005-07-14
    本页最后一次更新: 2009-09-24


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