AM29F004B datasheet(36/37 Pages) AMD

36 / 37 page

Am29F004B

8/5/05

AD VA NC E

IN FO RM AT ION

REVISION SUMMARY

Revision A (January 1999)

Initial release.

Revision B (March 10, 1999)

Global

Revised document into full data sheet.

Revision B+1 (March 18, 1999)

In-System Sector Protect/Sector Unprotect

Algorithms figure

Added requirements for asserting address A5 and setting

OE# to VIH during both algorithms.

Command Definitions table

Added A5 requirement to definition for SA+ in the legend. In

the fourth cycle of the Sector Relock sequence, changed

address from XXX to SA+.

Sector Protect/Unprotect Timing Diagram

Modified drawing to indicate that OE# should be dropped to

VIH during the third cycle.

Revision B+2 (May 14, 1999)

Ordering Information

Changed the temperature range in the example to I.

Device Bus Operation table

Corrected the highest bit in the address range column header

to A18.

Command Definitions table

In Note 4, changed the address range for bits that are don’t

care to A18–A12.

DC Characteristics table

In Note 5, deleted reference to ICC4.

Read Operations Timings and Alternate CE#

Controlled Write Operations figures

Deleted RESET# waveform.

Revision B+3 (July 12, 1999)

Global

Deleted all references to the PDIP package. Changed data

sheet status to Preliminary.

In-System Sector Protect/Unprotect Algorithms

figure

Added tolerance specifications to the 150 µs and 15 ms waits.

Clarified that reading from the sector address during either

sector protect or unprotect algorithm requires an access time

of 1 µs.

Revision C (November 12, 1999)

AC Characteristics—Figure 11, Program

Operations Timing and Figure 12, Chip/Sector

Erase Operations

Deleted tGHWL and changed OE# waveform to start at high.

Physical Dimensions

Replaced figures with more detailed illustrations.

Revision D (February 22, 2000)

Global

The “preliminary” designation was removed from the docu-

ment. Parameters are now stable, and only speed, package,

and temperature range combinations are expected to change

in future data sheet revisions.

Revision E (November 29, 2000)

Added table of contents.

Ordering Information

Deleted burn-in option.

Table , Command Definitions

In Note 4, corrected lower address bit of don’t care range to

A11.

Revision E+1 (March 28, 2005)

Global

Added Colophon

Updated Trademark

Ordering Information

Added Pb-free temperature ranges for Industrial and

Extended packaging

Added Valid Combination Codes

Revision E+2 (July 26, 2005)

Global

Removed all 55 ns information from the Datasheet.

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