W9812G2IB Datasheet, PDF (13/43 Pages) Winbond – 1M × 4 BANKS × 32BITS SDRAM

W9812G2IB
8.1 Simplified Stated Diagram
Mode
Register
Set
MRS
IDLE
Self
Refresh
SELF
SELF
exit
REF
CBR
Refresh
CKE
CKE
Power
Down
ROW
ACTIVE
CKE
CKE
Active
Power
Down
Write
WRITE
SUSPEND
CKE
CKE
WRITE
Read
Write
Read
READ
CKE
CKE
READ
SUSPEND
WRITEA
SUSPEND
CKE
CKE
WRITEA
READA
CKE
CKE
READA
SUSPEND
POWER
ON
Precharge
Precharge
MRS = Mode Register Set
REF = Refresh
ACT = Active
PRE = Precharge
WRITEA = Write with Auto-precharge
READA = Read with Auto-precharge
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Automatic sequence
Manual input
Publication Release Date: Mar. 09, 2010
Revision A04