IS43TR16256A-093NBL(2016) 查看數據表（PDF） - Integrated Silicon Solution

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IS43TR16256A-093NBL
(Rev.:2016)

512Mx8, 256Mx16 4Gb DDR3 SDRAM

Integrated Silicon Solution 

IS43/46TR16256A, IS43/46TR16256AL,

IS43/46TR85120A, IS43/46TR85120AL

9.6.8 Derating values [ps] for DDR3-800/1066/1333/1600 tDS/tDH - AC/DC based AC135 Threshold

AC135 Threshold -> VIH(ac) = VREF(dc) + 135mV, VIL(ac) = VREF(dc) - 135mV

DC100 Threshold -> VIH(dc) = VREF(dc) + 100mV, VIL(dc) = VREF(dc) - 100mV

DQS, DQS# Differential Slew Rate

DDR3

4.0V/ns

3.0V/ns

2.0V/ns

1.8V/ns

1.6V/ns

1.4V/ns

1.2V/ns

ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH ΔtDS ΔtDH

2 68 50 68 50 68 50

-

-

-

-

-

-

-

-

1.5 45 34 45 34 45 34 53 42

-

-

-

-

-

-

1

0

0

0

0

0

0

8

8

16 16

-

-

-

-

DQ Slew 0.9 -

-

2

-4

2

-4

10

4

18 12 26 20

-

-

Rate 0.8 -

-

-

-

3

-10 11

-2

19

6

27 14 35 24

V/ns

0.7

-

-

-

-

-

-

14

-8

22

0

30

8

38 18

0.6 -

-

-

-

-

-

-

-

25 -10 33

-2

41

8

0.5 -

-

-

-

-

-

-

-

-

-

29 -16 37

-6

0.4 -

-

-

-

-

-

-

-

-

-

-

-

30 -26

1.0V/ns

ΔtDS

-

-

ΔtDH

-

-

-

-

-

-

-

-

46 34

49 24

45 10

38 -10

9.6.9 Required minimum time tVAC [ps] above VIH(ac) {below VIL(ac)} for valid DQ transition

Slew

Rate

[V/ns]

800/1066

AC175

DDR3

800/1066/1333/1600

800/1066/1333/1600

AC150

AC135

1866 2133 800/1066

AC160

DDR3L

800/1066/1333/1600

AC135

1866

AC130

> 2.0

75

105

113

93 73

165

113

95

2

57

105

113

93 73

165

113

95

1.5

50

80

90

70 50

138

90

73

1

38

30

45

25

5

85

45

30

0.9

34

13

30

Note Note

67

30

16

0.8

29

Note

11

Note Note

45

11

Note

0.7

Note

Note

Note

-

-

16

Note

-

0.6

Note

Note

Note

-

-

Note

Note

-

0.5

Note

Note

Note

-

2

Note

Note

-

< 0.5

Note

Note

Note

-

-

Note

Note

-

Note:

The rising input signal shall become equal to or greater than VIH(ac) level; and the falling input signal shall become equal to or less than VIL(ac) level.

Integrated Silicon Solution, Inc. – www.issi.com –

81

Rev. G2

07/28/2016

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