W942508CH Datasheet, PDF (20/47 Pages) Winbond – 8M x 4 BANKS x 8 BIT DDR SDRAM

W942508CH
8.4 Simplified State Diagram
MODE
REGISTER
SET
MRS/EMRS
ACTIVE
POWERDOWN
PDEX
PD
Write
Write
SREF
SREFX
AREF
IDLE
PD
ACT
PDEX
SELF
REFRESH
AUTO
REFRESH
POWER
DOWN
ROW
ACTIVE
BST
Read
Read
Write
Write A
Write A
Read
Write A
PRE
Read A
PRE
Read A
PRE
Read
Read A
Read A
POWER
APPLIED
POWER
ON
PRE
PRE
CHARGE
Automatic Sequence
Command Sequence
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