SST26WF040B/040BA SST26WF080B/080BA 1.8V 4 Mbit a.
SST26WF040BA - 1.8V 4 Mbit and 8 Mbit Serial Quad I/O (SQI) Flash Memory
SST26WF040B - 1.8V 4 Mbit and 8 Mbit Serial Quad I/O (SQI) Flash Memory