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IS42S32400D-6B-TR
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
P40-P42
P43-P45
P46-P48
P49-P51
P52-P54
P55-P57
P58-P60
34
Integrated Silicon Solution, Inc. — www.issi.com
Rev.
F
03/03/09
IS42S32400D
READ - FULL-PAGE BURST
DON'T CARE
UNDEFINED
CLK
CKE
COMMAND
DQM0 - DQM3
A0-A9, A11
A10
BA0, BA1
DQ
t
CMS
t
CMH
ACTIVE NOP
READ
NOP
NOP
NOP
NOP
NOP
BURST TERM
NOP
NOP
t
AS
t
AH
t
AS
t
AH
t
AS
t
AH
ROW
ROW
BANK
COLUMN m
(2)
t
CH
t
CL
t
CK
t
CMS
t
CMH
t
CKS
t
CKH
BANK
t
RCD
CAS Latency
t
AC
t
AC
t
AC
t
AC
t
AC
t
HZ
t
LZ
t
AC
t
OH
t
OH
t
OH
t
OH
t
OH
t
OH
D
OUT
m
D
OUT
m+
1
D
OUT
m+
2
D
OUT
m-
1
D
OUT
m
D
OUT
m+
1
each row (x4) has
1,024 locations
Full page
completion
Full-page burst not self-terminating.
Use BURST
TERMINA
TE command.
T0 T1 T2 T3
T4 T5 T6
Tn+1
Tn+2
Tn+3
Tn+4
Notes:
1)
CAS
latency = 2, Burst Length = Full Page
2) X32: A8, A9, A11 = "Don't Care"
IS42S32400D
Integrated Silicon Solution, Inc. — www.issi.com
35
Rev.
F
03/03/09
READ - DQM OPERATION
DON'T CARE
UNDEFINED
CLK
CKE
COMMAND
DQM0 - DQM3
A0-A9, A11
A10
BA0, BA1
DQ
t
CMS
t
CMH
A
CTIVE
NOP
READ
NOP NOP NOP
NOP
NOP NOP
t
AS
t
AH
t
AS
t
AH
t
AS
t
AH
ENABLE A
UT
O PRECHARGE
DISABLE A
UT
O PRECHARGE
ROW
ROW
BANK
t
RCD
CAS Latency
D
OUT
m
D
OUT
m+
2
D
OUT
m+
3
COLUMN m
(2)
BANK
t
CH
t
CL
t
CK
t
CMS
t
CMH
t
CKS
t
CKH
t
OH
t
OH
t
OH
t
AC
t
AC
t
AC
t
HZ
t
HZ
t
LZ
t
LZ
T0 T1 T2 T3
T4 T5 T6 T7
T8
Notes:
1)
CAS
latency = 2, Burst Length = 4
2) X32: A8, A9, A11 = "Don't Care"
36
Integrated Silicon Solution, Inc. — www.issi.com
Rev.
F
03/03/09
IS42S32400D
DON'T CARE
CLK
COMMAND
ADDRESS
DQ
T0 T1 T2 T3
T4 T5 T6 T7
READ
NOP
NOP
NOP
NOP
A
CTIVE
NOP
D
OUT
n
D
OUT
n+1
D
OUT
n+2
D
OUT
n+3
BANK a,
COL n
BANK a,
ROW
BANK
(a or all)
CAS Latency - 2
t
RP
PRECHARGE
t
RQL
High-Z
DON'T CARE
CLK
COMMAND
ADDRESS
DQ
T0 T1 T2 T3
T4 T5 T6 T7
READ
NOP NOP NOP
NOP NOP
ACTIVE
D
OUT
n
D
OUT
n+1
D
OUT
n+2
D
OUT
n+3
BANK,
COL n
BANK,
COL b
CAS Latency - 3
t
RP
t
RQL
BANK a,
ROW
PRECHARGE
High-Z
READ to PRECHARGE
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P30
P31-P33
P34-P36
P37-P39
P40-P42
P43-P45
P46-P48
P49-P51
P52-P54
P55-P57
P58-P60
IS42S32400D-6B-TR
Mfr. #:
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Manufacturer:
Description:
IC DRAM 128M PARALLEL 90TFBGA
Lifecycle:
New from this manufacturer.
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