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DS1644 - Nonvolatile Timekeeping RAM

DS1644 Description

19-5203; Rev 4/10 DS1644/DS1644P Nonvolatile Timekeeping RAM www.maxim-ic.com .
PIN PDIP PowerCap NAME 1 32 A14 2 30 A12 3 25 A7 4 24 A6 5 23 A5 6 22 A4 7 21 A3 8 20 A2 9 19 A1 10 18 A0 11 16 DQ0 12 15 DQ.

DS1644 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 Abs

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Nonvolatile Timekeeping RAM Maxim Integrated
Maxim Integrated DS1644-like datasheet