k4j55323qi Samsung Semiconductor, Inc., k4j55323qi Datasheet - Page 7

• Manufacturer Part Number: k4j55323qi
• Description: 256mbit Gddr3 Sdram
• Manufacturer: Samsung Semiconductor, Inc.

K4J55323QI
7.0 FUNCTIONAL DESCRIPTION
Applied
Power
7.1 Simplified State Diagram
Power
On
Write A
Precharge
PREALL
EMRS
MRS
PREALL = Precharge All Banks
MRS = Mode Register Set
EMRS = Extended Mode Register Set
REFS = Enter Self Refresh
REFSX = Exit Self Refresh
REFA = Auto Refresh
Write
Write
A
Power
Active
Down
PRE
CKEL
Write
MRS
PRE
CKEH
Write A
Write
Precharge
PREALL
Active
Row
Idle
ACT
PRE
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Read
Read A
CKEH
REFS
Read
A
PRE
CKEL = Enter Power Down
CKEH = Exit Power Down
ACT = Active
Write A = Write with Autoprecharge
Read A = Read with Autoprecharge
PRE = Precharge
REFSX
Read
REFA
CKEL
Refresh
Self
Precharge
Power
Down
Read
Read
A
Command Sequence
Automatic Sequence
Read A
Refresh
Auto
256M GDDR3 SDRAM
Rev. 1.3 May 2007