©2011 Silicon Storage Technology, Inc. DS25051A 09/11
33
4 Mbit SPI Serial Flash
SST25VF040B
Data Sheet
Microchip Technology Company
Table 17:Revision History
Revision Description Date
00
• Initial release of data sheet
Sep 2005
01
• Migrated document to a Data Sheet
• Updated Surface Mount Solder Reflow Temperature information
Jan 2006
02
• Added 8-Lead SOIC (150 mils) package drawing.
• Updated Features and Product Description to include new package infor-
mation.
• Updated Pin-Assignment, Figure 2
• Revised Figure 10 and Figure 11
Jul 2007
03
• Updated document to reflect upgraded clock frequency to 80 MHz glob-
ally
• Updated Features
• Changed maximum frequency to 80 MHz in Table 5 on page 9
• Added IDDR3 to Table 10 on page 22
• Added 80 MHz column to Table 14 on page 24
• Updated Product Ordering Information and Valid Combinations on page 29
Mar 2009
04
• Updated Product Ordering Information and Valid Combinations on page 29
• Added “Power-Up Specifications” on page 27
• Modified High-Speed-Read values in Table 5 on page 9 and “High-
Speed-Read (50/80 MHz)” on page 11
Jun 2009
05
• Added 50/33 MHz information throughout.
• Separated AC and DC Characteristics for SST25VF040B-50-4C-xxxF &
SST25VF040B-80-4I-xxxE
Oct 2009
06
• Updated “Auto Address Increment (AAI) Word-Program”, “End-of-Write
Detection”, and “Hardware End-of-Write Detection” on page 12.
• Revised Figures 10 and 11 on page 14.
• Updated document to new format.
Feb 2011
A
• Removed “Recommended System Power-up Timings” from page 29.
• Released document under letter revision system.
• Updated Spec number from S71295 to DS25051
Sep 2011
