k4j55323qf-gc Samsung Semiconductor, Inc., k4j55323qf-gc Datasheet - Page 8
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k4j55323qf-gc
Manufacturer Part Number
k4j55323qf-gc
Description
256mbit Gddr3 Sdram
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.K4J55323QF-GC.pdf
(49 pages)
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K4J55323QF-GC
FUNCTIONAL DESCRIPTION
Simplified State Diagram
Applied
Power
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
Write
CKEL
MRS
PRE
CKEH
Write A
Write
Precharge
PREALL
Active
Row
Idle
PRE
ACT
Read
Read A
- 8 -
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 1.7 (Jan. 2005)