fm3808 Ramtron Corporation, fm3808 Datasheet - Page 27

• Manufacturer Part Number: fm3808
• Description: 256kb Bytewide Fram W/ Real-time Clock
• Manufacturer: Ramtron Corporation

Revision History
Rev. 1.3 (EOL)
Feb. 2006
1.3 (EOL)
Revision
0.1
0.2
1.0
1.1
1.2
1.3
Date
Dec 19, 2000
Sept 19, 2001
July 31, 2002
May 2, 2003
Feb 11, 2004
Sept. 9, 2005
Feb. 10, 2006
Summary of Changes
Initial Release
Changed I
temperature condition. General cleanup.
Fixed shading in Table 1, registers 7FF1h–7FF4h. Increased storage
temperature range. Changed input data hold time t
Changed t
Removed all references to the use of a capacitor as a backup source. Added
Recommended Power-Up Sequence section. Changed Mechanical Drawing
title.
Not Recommended for New Designs.
End of Life. No Direct Replacement. Alternate solution is FM1808 with
FM4005. Last time buy is Sept. 2006.
CA
SB
(max) spec. Reworded notes 2 and 3 in DC Operating table.
spec, redefined crystal capacitance specs, data retention
DH
to 5ns.
Page 27 of 27
FM3808