K4J55323QG
7.0 FUNCTIONAL DESCRIPTION
7.1 Simplified State Diagram
Power
Applied
256M GDDR3 SDRAM
Power
On
Precharge
PREALL
Self
Refresh
REFS
REFSX
MRS
EMRS
MRS
Idle
REFA
Auto
Refresh
CKEH
CKEL
Active
Power
Down
CKEH
CKEL
ACT
Precharge
Power
Down
Row
Active
Write
Write A
Write
Write
Read A
Read
Read
Read
Write A
Read
A
PRE
Read A
Write
A
PRE
PRE
Read
A
PRE
Precharge
PREALL
Automatic Sequence
Command Sequence
PREALL = Precharge All Banks
MRS = Mode Register Set
EMRS = Extended Mode Register Set
REFS = Enter Self Refresh
REFSX = Exit Self Refresh
REFA = Auto Refresh
CKEL = Enter Power Down
CKEH = Exit Power Down
ACT = Active
Write A = Write with Autoprecharge
Read A = Read with Autoprecharge
PRE = Precharge
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Rev. 1.1 November 2005
SAMSUNG [ SAMSUNG SEMICONDUCTOR ]
