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參數(shù)資料
| 型號： | K4N51163QC-ZC33 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 512Mbit gDDR2 SDRAM |
| 中文描述： | 512MB的GDDR2 SDRAM的 |
| 文件頁數(shù)： | 14/64頁 |
| 文件大小： | 1420K |
| 代理商： | K4N51163QC-ZC33 |
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- 14 -
Rev 1.5 Oct. 2005
512M gDDR2 SDRAM
K4N51163QC-ZC
5. AC timings are for linear signal transitions.
6. These parameters guarantee device behavior, but they are not necessarily tested on each device.
They may be guaranteed by device design or tester correlation.
7. All voltages are referenced to VSS.
8. Tests for AC timing, IDD, and electrical (AC and DC) characteristics, may be conducted at nominal reference/supply voltage levels, but the related
specifications and device operation are guaranteed for the full voltage range specified.
: Specific Notes for dedicated AC parameters
9. User can choose which active power down exit timing to use via MRS(bit 12). tXARD is expected to be used for fast active power down exit timing.
tXARDS is expected to be used for slow active power down exit timing.
10. AL = Additive Latency
11. This is a minimum requirement. Minimum read to precharge timing is AL + BL/2 providing the tRTP and tRAS(min) have been satisfied.
12. A minimum of two clocks (2 * tCK) is required irrespective of operating frequency
13. Timings are guaranteed with command/address input slew rate of 1.0 V/ns.
14. These parameters guarantee device behavior, but they are not necessarily tested on each device. They may be guaranteed by
device design or
tester correlation.
15. Timings are guaranteed with data, mask, and (DQS in singled ended mode) input slew rate of 1.0 V/ns.
16. Timings are guaranteed with CK/CK differential slew rate of 2.0 V/ns. Timings are guaranteed for DQS signals with a differential slew rate of 2.0 V/ns
in differential strobe mode and a slew rate of 1V/ns in single ended mode.
17. tDS and tDH (data setup and hold) derating
1) Input waveform timing is referenced from the input signal crossing at the V
IH
(AC) level for a rising signal and V
IL
(AC) for a falling signal applied to
the device under test.
2) Input waveform timing is referenced from the input signal crossing at the V
IH
(DC) level for a rising signal and V
IL
(DC) for a falling signal applied to
the device under test.
For all input signals the total tDS (setup time) and tDH(hold time) required is calculated by adding the datasheet tDS(base) and tDH(base) value to the
delta tDS and delta tDH derating value respectively. Example : tDS (total setup time) = tDS(base) + delta tDS.
tDS,
tDH Derating Values of gDDR2-550 (ALL units in ‘ps’, Note 1 applies to entire Table)
DQS,DQS Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4V/ns
1.2V/ns
1.0V/ns
0.8V/ns
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
DQ
Slew
rate
V/ns
2.0
125
45
125
45
125
45
-
-
-
-
-
-
-
-
-
-
-
-
1.5
83
21
83
21
83
21
95
33
-
-
-
-
-
-
-
-
-
-
1.0
0
0
0
0
0
0
12
12
24
24
-
-
-
-
-
-
-
-
0.9
-
-
-11
-14
-11
-14
1
-2
13
10
25
22
-
-
-
-
-
-
0.8
-
-
-
-
-25
-31
-13
-19
-1
-7
11
5
23
17
-
-
-
-
0.7
-
-
-
-
-
-
-31
-42
-19
-30
-7
-18
5
-6
17
6
-
-
0.6
-
-
-
-
-
-
-
-
-43
-59
-31
-47
-19
-35
-7
-23
5
-11
0.5
-
-
-
-
-
-
-
-
-
-
-74
-89
-62
-77
-50
-65
-38
-53
0.4
-
-
-
-
-
-
-
-
-
-
-
-
-127
-140
-115
-128
-103
-116
tDS,
tDH Derating Values for gDDR2-600/700/800 (ALL units in ‘ps’, Note 1 applies to entire Table)
DQS,DQS Differential Slew Rate
4.0 V/ns
3.0 V/ns
2.0 V/ns
1.8 V/ns
1.6 V/ns
1.4V/ns
1.2V/ns
1.0V/ns
0.8V/ns
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
tDS
tDH
DQ
Slew
rate
V/ns
2.0
100
45
100
45
100
45
-
-
-
-
-
-
-
-
-
-
-
-
1.5
67
21
67
21
67
21
79
33
-
-
-
-
-
-
-
-
-
-
1.0
0
0
0
0
0
0
12
12
24
24
-
-
-
-
-
-
-
-
0.9
-
-
-5
-14
-5
-14
7
-2
19
10
31
22
-
-
-
-
-
-
0.8
-
-
-
-
-13
-31
-1
-19
11
-7
23
5
35
17
-
-
-
-
0.7
-
-
-
-
-
-
-10
-42
2
-30
14
-18
26
-6
38
6
-
-
0.6
-
-
-
-
-
-
-
-
-10
-59
2
-47
14
-35
26
-23
38
-11
0.5
-
-
-
-
-
-
-
-
-
-
-24
-89
-12
-77
0
-65
12
-53
0.4
-
-
-
-
-
-
-
-
-
-
-
-
-52
-140
-40
-128
-28
-116
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