W972GG6JB Datasheet, PDF (36/87 Pages) Winbond – 16M  8 BANKS  16 BIT DDR2 SDRAM

W972GG6JB
8.5 Simplified Stated Diagram
OCD
calibration
Setting
MR,EMR (1)
EMR (2)
EMR (3)
CKEL
Active
Power
Down
(E)MRS
Initialization
Sequence
CKEL
Self Refreshing
PRE
SELF
Idle
All banks
Precharged
CKEH
REF
ACT
CKEL
CKEH
Precharge
Power
Down
Refreshing
CKEL
CKEL
CKEL
Activating
Autoomatic Sequence
Command Sequence
CKEH
CKEL
Write
Write
Writing
WRITA
Writing
with
Auto-precharge
Bank
Active
Read
WRITA
READA
Write
Read
WRITA
READA
PRE, PREA
Read
Reading
READA
CKEL = CKE LOW, enter Power Down
CKEH = CKE HIGH, exit Power Down
CKEH = CKE HIGH, exit Self Refresh
ACT = Activate
WRITA = Write with Auto-precharge
READA = Read (with Auto-precharge
PREA = Precharge All
(E)MRS = (Extended) Mode Register Set
SELF = Enter Self Refresh
REF = Refresh
Reading
with
Auto-precharge
PRE, PREA
PRE, PREA
Precharging
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Publication Release Date: Nov. 29, 2011
Revision A02