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W9725G6IB
8.5
Simplified Stated Diagram
OCD
Initialization
Sequence
CKEL
calibration
Self Refreshing
SELF
Setting
MR,EMR (1)
EMR (2)
EMR (3)
(E)MRS
PRE
Idle
All banks
Precharged
CKEH
REF
Refreshing
CKEL
ACT
CKEH
Precharge
CKEL
Power
Down
CKEL
Activating
Autoomatic Sequence
CKEL
Active
Power
Down
CKEL
CKEL
CKEH
Write
Bank
Active
Read
Command Sequence
Write
WRITA
READA
Read
Writing
Write
Read
Reading
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
WRITA
READA
SELF = Enter Self Refresh
REF = Refresh
READA
WRITA
Writing
with
Auto-precharge
PRE, PREA
Reading
with
Auto-precharge
PRE, PREA
PRE, PREA
Precharging
Publication Release Date: Oct. 23, 2009
- 36 -
Revision A04
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