AM29DL400B datasheet(46/47 Pages) AMD

46 / 47 page

Am29DL400B

REVISION SUMMARY

Revision A (January 1998)

Initial release.

Revision B (March 1998)

Expanded data sheet from Advance Information to

Preliminary version.

Revision C (April 1998)

Global

Changed -70R speed option to -70.

Figure 1, In-system Sector Protect/Unprotect

Algorithm

Added “PSLSCNT=1” to sector protect algorithm.

Reset Command

Deleted last paragraph; applies only to hardware

reset.

DQ6: Toggle Bit I

First and second para., clarified that the toggle bit

may be read “at any address within the program-

ming or erasing bank,” not at “any address.” Fourth

para., clarified “device” to “bank”

Operating Ranges

Deleted reference to regulated voltage range

DC Characteristics

Added Note 4 reference to ICC6 and ICC7.

Erase and Program Operations

Corrected note references for tWHWH1, tWHWH2,

and tVCS

Temporary Sector Unprotect

Added note reference to tVIDR.

Figure 24, Sector Protect/Unprotect Timing

Diagram

Updated figure to correct address waveform—valid ad-

dress not required in first cycle.

Alternate CE# Controlled Erase/Program

Operations

Corrected note references for tWHWH1, tWHWH2

Erase and Programming Performance

In Note 2, changed worst case endurance to 1 million

cycles.

Revision D (June 1999)

Distinctive Characterisitics

Added 20 Year data retention at 125° C bullet.

Ordering Information

Corrected TSOP description to 48-pin.

Revision D+1 (March 23, 1999)

AC Characteristics, Read-only Operations table

Corrected tRC, tACC, and tCE for 90 ns speed option to

90 ns.

Revision E (December 7, 1999)

AC Characteristics—Figure 17. Program

Operations Timing and Figure 18. Chip/Sector

Erase Operations

Deleted tGHWL and changed OE# waveform to start

at high.

Physical Dimensions

Replaced figures with more detailed illustrations.

Revision E+1 (May 12, 2000)

Ordering Information

Optional processing: Deleted the burn-in option

AC Characteristics—Read-Only Operations

Changed tDF to 16 ns for all speeds.

Revision E+2 (November 21, 2000)

Added table of contents.

Revision E+3 (January 7, 2005)

Global

Added Colophon

Updated Trademark

Updated fonts

Ordering Information

Added temperature ranges for Pb-free (Lead-free)

Packages

Added new valid combinations.

Revision E+4 (June 7, 2005)

Cover page and Title page

Updated EOL disclaimers. Added notation to

superseding documents.

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