Winbond W979H6KBVX2I, SDRAM 512Mbit Surface Mount, 400MHz, 134-Pin VFBGA

This is a 512Mb Low Power DDR2 SDRAM organized as 8M words x 4 banks x 16bits

Burst Type: Sequential or Interleave
Standard Self Refresh Mode
PASR, ATCSR, Power Down Mode、DPD
Programmable output buffer driver strength
Four internal banks for concurrent operation
Bidirectional, data strobe (DQS) is transmitted or received with data, to be used in capturing data at the receiver