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DS1643 Datasheet - Maxim Integrated Products

Nonvolatile Timekeeping RAMs

DS1643 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 o

DS1643 General 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. A12 A7 A6 A5 A4 A3 A2 A1 A0 A10 A11 A9 A8 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6.

DS1643 Datasheet (254.49 KB)

Preview of DS1643 PDF

Datasheet Details

Part number:

DS1643

Manufacturer:

Maxim Integrated ↗ Products

File Size:

254.49 KB

Description:

Nonvolatile timekeeping rams.

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DS1643 Nonvolatile Timekeeping RAMs Maxim Integrated Products

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