AM29BDS640G datasheet(76/77 Pages) AMD

76 / 77 page

Am29BDS640G

25903C2 May 9, 2006

Data

Sheet

Revision A + 4 (July 26, 2002)

Table 1, Device Bus Operations

Changed Synchronous Write to rising edge of CLK.

Writing Commands/Command Sequences

Added CLK as part of the asynchronous write operation system drive. Added VCC

and VIO Power-up and Power-down Sequencing section.

AC Characteristics

Changed tCHW erase/program time from Min to Max.

Figure 20, Asynchronous Program Operation Timings

Changed tCSW1 reference to WE# from AVD#.

Figure 21, Alternate Asynchronous Program Operation Timings

Changed to show CLK low after tCHW time.

Figure 22, Synchronous Program Operation Timings

Removed tACH. Changed tAHW to tAVSW and added tCSW2.

Figure 23, Alternate Synchronous Program Operation Timings

Changed tAVCH to tAVHC. Removed tACH.

DC Characteristics, CMOS Compatible

Corrected ICCB OE# = VIL to = VIH; switched Typ. and Max. values.

Revision B (October 31, 2002)

Global

Renamed Handshaking Enabled to Reduced Wait-State Handshaking. Renamed

non-Handshaking to Standard Handshaking

Product Selector Guide

Revised with renamed speed options and added Synchronous Access Time with

Reduced Wait-state Handshaking. Added Asynchronous Access Time.

Connection Diagram

Corrected pin numbers on bottom row.

Ordering Information

Revised with global changes. Revised Valid Combinations with updated ordering

information.

FBGA Capacitance

Added BGA Capacitance Table after Erase and Programming Performance.

Revision C (August 13, 2003)

Global

Updated formatting to new Spansion template. Changed data sheet status from

Advance Information to Preliminary.

Sector Lock/Unlock Command Sequence

Modified description of write cycles.

Reset Command

Modified last paragraph of section.

Table 13, Command Definitions

Added note references to Erase Suspend and Sector Lock/Unlock rows in table.

Replaced addresses “XXX” with “BA” in first and second cycles of Sector Lock/Un-

lock table row. Modified description of BA in legend.

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