KMM372F804BS SAMSUNG [Samsung semiconductor], KMM372F804BS Datasheet - Page 18

• Manufacturer Part Number: KMM372F804BS
• Description: 8M x 72 DRAM DIMM with ECC using 4Mx16, 4Mx4 4K Refresh, 3.3V
• Manufacturer: SAMSUNG [Samsung semiconductor]

DRAM MODULE
CAS-BEFORE-RAS REFRESH COUNTER TEST CYCLE
READ CYCLE
WRITE CYCLE
READ-MODIFY-WRITE
NOTE : This timing diagram is applied to all devices besides 64M DRAM based modules.
DQ
RAS
CAS
DQ
DQ
OE
OE
OE
W
W
W
A
V
V
V
V
I/OH
I/OL
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
OH
OL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
t
t
t
t
WRP
WRP
WRP
CSR
t
t
t
WRH
WRH
WRH
t
CHR
t
CPT
t
ASC
t
t
RCS
WCS
t
t
RCS
ADDRESS
DS
COLUMN
t
t
CLZ
t
RAS
AA
DATA-OUT
t
VALID
CLZ
t
t
CAC
t
t
OEA
AWD
CAH
DATA-IN
t
WP
t
t
t
AA
CAC
CWL
t
t
t
OEA
CWD
WCH
t
t
t
OEZ
t
RAL
RWL
DH
t
DATA-IN
t
OED
VALID
CAS
t
RSH
t
DS
t
DH
t
WP
DATA-OUT
t
RWL
KMM372F804BS
t
CWL
t
t
OEZ
RCH
t
RRH
Don t care
Undefined
t
RP
t
t
CEZ
REZ
t
WEZ