K4H510438G SAMSUNG [Samsung semiconductor], K4H510438G Datasheet - Page 16

• Manufacturer Part Number: K4H510438G
• Description: 512Mb G-die DDR SDRAM Specification
• Manufacturer: SAMSUNG [Samsung semiconductor]

K4H510438G
K4H510838G
K4H511638G
19.0 AC Timming Parameters & Specifications
Row cycle time
Refresh row cycle time
Row active time
RAS to CAS delay
Row precharge time
Row active to Row active delay
Write recovery time
Last data in to Read command
Clock cycle time
Clock high level width
Clock low level width
DQS-out access time from CK/CK
Output data access time from CK/CK
Data strobe edge to ouput data edge
Read Preamble
Read Postamble
CK to valid DQS-in
DQS-in setup time
DQS-in hold time
DQS falling edge to CK rising-setup time
DQS falling edge from CK rising-hold time
DQS-in high level width
DQS-in low level width
Address and Control Input setup time(fast)
Address and Control Input hold time(fast)
Address and Control Input setup
Address and Control Input hold time(slow)
Data-out high impedence time from CK/CK
Data-out low impedence time from CK/CK
Mode register set cycle time
DQ & DM setup time to DQS
DQ & DM hold time to DQS
Control & Address input pulse width
DQ & DM input pulse width
Exit self refresh to non-Read command
Exit self refresh to read command
Refresh interval time
Output DQS valid window
Clock half period
Data hold skew factor
DQS write postamble time
Active to Read with Auto precharge
command
Autoprecharge write recovery +
Precharge time
Power Down Exit Time
Parameter
CL=2.0
CL=2.5
CL=3.0
tWPRES
tDQSCK
Symbol
tDQSQ
tDQSS
tWPRE
tDQSH
tWPST
tRPRE
tDQSL
tXSNR
tXSRD
tPDEX
tRPST
tDIPW
tWTR
tMRD
tRCD
tRRD
tREFI
tQHS
tRFC
tRAS
tDSS
tDSH
tRAP
tIPW
tDAL
tWR
tRC
tRP
tCK
tCH
tAC
tDS
tDH
tQH
tHP
tCL
tHZ
tLZ
tIH
tIH
tIS
tIS
(tWR/tCK)
or tCHmin
(tRP/tCK)
(DDR400@CL=3.0)
tCLmin
-0.55
-0.65
-0.65
-0.65
-tQHS
0.45
0.45
0.72
0.35
1.75
0.25
0.35
Min
200
0.9
0.4
0.2
0.2
0.6
0.6
0.7
0.7
0.4
0.4
2.2
tHP
0.4
55
70
40
15
15
10
15
10
75
15
2
6
5
0
-
+
1
-
CC
16 of 24
+0.65
+0.55
+0.65
+0.65
Max
0.55
0.55
1.28
70K
0.4
1.1
0.6
7.8
0.5
0.6
12
10
-
-
-
(tWR/tCK)
or tCHmin
(tRP/tCK)
(DDR333@CL=2.5)
tCLmin
-tQHS
0.45
0.45
0.75
0.25
0.35
0.35
0.75
0.75
0.45
0.45
1.75
Min
-0.6
-0.7
-0.7
-0.7
200
0.2
0.2
7.5
0.9
0.4
0.8
0.8
2.2
tHP
0.4
18
18
15
12
75
18
60
72
42
12
1
6
0
+
1
-
-
B3
+0.7
+0.7
Max
0.55
0.55
+0.6
+0.7
1.25
0.55
70K
0.4
1.1
0.6
7.8
0.6
12
12
-
-
-
Rev. 1.1 November 2009
or tCHmin
(tWR/tCK)
(tRP/tCK)
(DDR266@CL=2.5)
tCLmin
-0.75
-0.75
-0.75
-0.75
-tQHS
0.45
0.45
0.75
0.25
0.35
0.35
1.75
Min
200
7.5
0.9
0.4
0.2
0.2
0.9
0.9
1.0
1.0
0.5
0.5
2.2
tHP
0.4
65
75
45
20
20
15
15
10
15
75
20
1
0
+
1
-
-
B0
DDR SDRAM
+0.75
+0.75
120K
+0.75
+0.75
Max
0.55
0.55
1.25
0.75
0.5
1.1
0.6
7.8
0.6
12
12
-
-
-
Unit
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
tCK
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
us
ns
ns
ns
15, 17~19
15, 17~19
16~19
16~19
20, 21
Note
j, k
j, k
13
18
18
14
21
21
12
23
22
11
11