
DS1554 256k, Nonvolatile, Y2K-Compliant Timekeeping RAM
18 of 18
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REVISION HISTORY
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
9/10
Updated the Ordering Information table to include only lead-free parts and changed the pin-
package for EMOD to EDIP; updated the Absolute Maximum Ratings section to include the
storage temperature range and lead and soldering temperatures for EDIP and PowerCap
packages; added Note 11 to the ICC parameter in the DC Electrical Characteristics tables
(for 5.0V and 3.3V) and the Notes section; replaced the package outline drawings with the
Package Information
table
2, 11, 12, 17