k4d263238e-gc Samsung Semiconductor, Inc., k4d263238e-gc Datasheet - Page 13
k4d263238e-gc
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k4d263238e-gc
Description
1m X 32bit X 4 Banks Graphic Double Data Rate Synchronous Dram With Bi-directional Data Strobe And Dll
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.K4D263238E-GC.pdf
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AC CHARACTERISTICS
*1.
CK cycle time
CK high level width
CK low level width
DQS out access time from CK
Output access time from CK
Data strobe edge to Dout edge
Read preamble
Read postamble
CK to valid DQS-in
DQS-In setup time
DQS-in hold time
DQS write postamble
DQS-In high level width
DQS-In low level width
Address and Control input setup
Address and Control input hold
DQ and DM setup time to DQS
DQ and DM hold time to DQS
Clock half period
Data Hold skew factor
Data output hold time from DQS
Jitter over 1~6 clock cycle error
Cycle to cyde duty cycle error
Rise and fall times of CK
Simplified Timing @ BL=2, CL=4
K4D263238E-GC
COMMAND
The cycle to cycle jitter over 1~6 cycle short term jitter.
CK, CK
DQS
CS
DM
DQ
Parameter
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tCHmin
tCLmin
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2.5
0.9
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0.4
0.8
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0.55
0.55
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1.15
0.55
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1.1
0.6
0.6
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75
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tCLmin
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2.86
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0.55
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0.6
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75
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4
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x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
4
tDQSCK
Max
0.55
0.55
0.55
0.55
0.35
1.15
0.55
0.55
700
Qa1
1.1
0.6
0.6
0.4
85
85
10
-
-
-
-
-
-
-
-
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x x x x x x
tDQSQ
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
x x x x x x x x x x x
tCHmin
tCLmin
t
Min
0.45
0.45
0.85
0.35
0.45
0.45
0.40
0.40
tHP-
tRPST
Qa2
-0.6
-0.6
3.6
0.9
0.4
0.4
0.9
0.9
QHS
or
0
-
-
-
-
-
-
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
x x x x x x x x x x
-36
5
Max
0.55
0.55
0.40
1.15
0.55
0.55
0.45
700
0.6
1.1
0.6
0.6
0.6
10
95
95
-
-
-
-
-
-
-
-
tIS
tCHmin
tIH
tCLmin
t
tHP-
Min
0.45
0.45
0.35
0.45
0.45
0.40
0.40
-0.6
-0.6
128M GDDR SDRAM
QHS
WRITEB
4.0
0.9
0.4
0.8
0.4
0.9
0.9
or
0.
-
-
-
-
-
-
6
-40
t
WPRES
Max
0.55
0.55
0.40
0.55
0.55
0.45
-0.6
100
100
700
0.6
1.1
0.6
1.2
0.6
10
-
-
-
-
-
-
-
-
tDQSS
Rev 1.7 (Nov. 2003)
t
WPREH
tCLmin
tCHmin
t
Min
0.45
0.45
0.45
0.45
0.45
0.45
tHP-
-0.7
-0.7
QHS
4.5
0.9
0.4
0.8
0.3
0.4
1.0
1.0
0.
or
-
-
-
-
-
-
7
tDS tDH
-45
Db0
Max
0.55
0.55
0.45
0.55
0.55
105
105
700
tDQSH
0.7
0.7
1.1
0.6
1.2
0.6
0.5
10
-
-
-
-
-
-
-
-
Db1
Unit Note
tDQSL
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
ps
ps
8
1
1
1