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DS1644

Maxim Integrated
Part Number DS1644
Manufacturer Maxim Integrated
Description Nonvolatile Timekeeping RAM
Published Mar 27, 2020
Detailed Description 19-5203; Rev 4/10 DS1644/DS1644P Nonvolatile Timekeeping RAM www.maxim-ic.com FEATURES  Integrated NV SRAM, Real-Time...
Datasheet PDF File DS1644 PDF File

DS1644
DS1644

Overview
19-5203; Rev 4/10 DS1644/DS1644P Nonvolatile Timekeeping RAM www.
maxim-ic.
com FEATURES  Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit and Lithium Energy Source  Clock Registers are Accessed Identically to the Static RAM.
These Registers are Resident in the Eight Top RAM Locations.
 Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power  BCD-Coded Year, Month, Date, Day, Hours, Minutes, and Seconds with Leap Year Compensation Valid Up to 2100  Power-Fail Write Protection Allows for ±10% VCC Power Supply Tolerance  DS1644 Only (DIP Module) Upward Compatible with the DS1643 Timekeeping RAM to Achieve Higher RAM Density Standard JEDEC Bytew...


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