DS1643, DS1643P - Nonvolatile Timekeeping RAMs

Maxim Integrated Products

DS1643 Datasheet Preview — This datasheet PDF includes multiple part numbers: DS1643, DS1643P. Please refer to the document for exact specifications by model.

Datasheet Details

Part number	DS1643, DS1643P
Manufacturer	Maxim Integrated ↗ Products
File Size	254.49 KB
Description	Nonvolatile Timekeeping RAMs
Datasheet	DS1643P_MaximIntegratedProducts.pdf
Note	This datasheet PDF includes multiple part numbers: DS1643, DS1643P. Please refer to the document for exact specifications by model.

DS1643 Product details

Description

PDIP 1 2 3 4 5 6 7 8 9 10 21 23 24 25 11 12 13 15 16 17 18 19 20 22 26 27 28 14 PIN PowerCap 1, 2, 3, 31 34 30 25 24 23 22 21 20 19 18 28 29 27 26 16 15 14 13 12 11 10 9 8 7 6 5 4 17 NAME N.C.

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 Reside in the Eight Top RAM Locations.
Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power.
Access Times of 85ns and 100ns.
BCD-Coded Year, Month, Date, Day, Hours, Minutes, and Seconds with Leap Year Compensation Valid Up to 2100.
Power-Fail Write Protection Allows f.

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Published: Jul 19, 2010 |