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DS1553

Dallas Semiconducotr
Part Number DS1553
Manufacturer Dallas Semiconducotr
Description Year-2000-Compliant Timekeeping RAM
Published Sep 21, 2005
Detailed Description 19-5480; Rev 8/10 www.maxim-ic.com DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM GENERAL DESCRIPTION ...
Datasheet PDF File DS1553 PDF File

DS1553
DS1553

Overview
19-5480; Rev 8/10 www.
maxim-ic.
com DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM GENERAL DESCRIPTION The DS1553 is a full-function, year-2000compliant (Y2KC) real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and 8k x 8 nonvolatile static RAM.
User access to all registers within the DS1553 is accomplished with a byte-wide 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.
FEATURES  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 Pin Configurations appear at end of data sheet.
ORDERING INFORMATION  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 PART VOLTAGE (V) TEMP RANGE DS1553-85+ DS1553-100+ 5.
0 0°C to +70°C 5.
0 0°C to +70°C DS1553W-120+ 3.
3 0°C to +70°C DS1553W-150+ 3.
3 0°C to +70°C DS1553P-85+ 5.
0 0°C to +70°C DS1553P-100+ 5.
0 DS1553WP-120+ 3.
3 0°C to +70°C 0°C to +70°C DS1553WP-150+ 3.
3 0°C to +70°C DS9034PCX+ 3 0°C to +70°C +Denotes a lead(Pb)-free/RoHS-compliant package.
*PowerCap required, must be ordered separately **A “+” symbol anywhere on the top mark indicates a lead(Pb)-free package.
PIN-PACKAGE 28 EDIP (0.
740) 28 EDIP (0.
740) 28 EDIP (0.
740) 28 EDIP (0.
740) 34 PowerCap* 34 PowerCap* 34 Pow...


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