ISSI
IS62WV51216HBLL-45TLI
SRAM 8Mb, Low Power/Power Saver,Async,512K x 16,45ns,2.2v~3.6v,44 Pin TSOP II, RoHS
$5.1
IS62WV2568FBLL-45HLI
SRAM 2Mb, Low Power/Power Saver,Async,256K x 8,45ns,2.2v~3.6v,32 Pin sTSOP I (8x13.4mm), RoHS
$2.84