The 25 series Serial Flash family features a four-wire, SPI-compatible interface that allows for a low pin-count package which occupies less board space and ultimately lowers total system costs. The SST25VF040B devices are enhanced with improved operating frequency and even lower power consumption.
SST25VF040B SPI serial flash memories are manufactured with proprietary, high-performance CMOS SuperFlash technology. The split-gate cell design and thick-oxide tunneling injector attain better reliability and manufacturability compared with alternate approaches.
This document provides supplemental information about the 80 MHz parts which are End-of-Life (EOL). Except for the information provided herein, the EOL parts behave as described in the SST25VF040B data sheet DS-20005051. See page 5 for specific part numbers.

Brand of Product：	MICROCHIP
Part#：	SST25VF040B 、 25 series 、 SST25VF040B-80-4I-SAE 、 SST25VF040B-80-4I-SAE-T 、 SST25VF040B-80-4I-S2AE 、 SST25VF040B-80-4I-S2AE-T 、 SST25VF040B-80-4I-QAE 、 SST25VF040B-80-4I-QAE-T 、 SST25VF040B-80-xx-xxE More Part#
Product Category：	SPI Serial Flash More
Application：	More
Data Type：	PCN/EOL More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2014
Version Number：
Data Encoding：	DS20005264A
Data Size：	171 KB