W632GG8KB Datasheet, PDF (151/159 Pages) Winbond – 32M X 8 BANKS X 8 BIT DDR3 SDRAM

W632GG8KB
Table 52 – Derating values DDR3-1866 tIS/tIH - AC/DC based Alternate AC135 Threshold
CMD/
ADD
Slew
rate
(V/nS)
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
ΔtIS, ΔtIH derating in [pS] AC/DC based
Alternate AC135 Threshold -> VIH(AC)=VREF(DC)+135mV, VIL(AC)=VREF(DC)-135mV
CK, CK# Differential Slew Rate
4.0 V/nS
3.0 V/nS
2.0 V/nS
1.8 V/nS
1.6 V/nS
1.4 V/nS
1.2 V/nS
1.0 V/nS
ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH
68 50 68 50 68 50 76 58 84 66 92 74 100 84 108 100
45 34 45 34 45 34 53 42 61 50 69 58 77 68 85 84
0
0
0
0
0
0
8
8 16 16 24 24 32 34 40 50
2 -4 2 -4 2 -4 10 4 18 12 26 20 34 30 42 46
3 -10 3 -10 3 -10 11 -2 19 6 27 14 35 24 43 40
6 -16 6 -16 6 -16 14 -8 22 0 30 8 38 18 46 34
9 -26 9 -26 9 -26 17 -18 25 -10 33 -2 41 8 49 24
5 -40 5 -40 5 -40 13 -32 21 -24 29 -16 37 -6 45 10
-3 -60 -3 -60 -3 -60 6 -52 14 -44 22 -36 30 -26 38 -10
Table 53 – Derating values DDR3-1866 tIS/tIH - AC/DC based Alternate AC125 Threshold
CMD/
ADD
Slew
rate
(V/nS)
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
ΔtIS, ΔtIH derating in [pS] AC/DC based
Alternate AC125 Threshold -> VIH(AC)=VREF(DC)+125mV, VIL(AC)=VREF(DC)-125mV
CK, CK# Differential Slew Rate
4.0 V/nS
3.0 V/nS
2.0 V/nS
1.8 V/nS
1.6 V/nS
1.4 V/nS
1.2 V/nS
1.0 V/nS
ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH ΔtIS ΔtIH
63 50 63 50 63 50 71 58 79 66 87 74 95 84 103 100
42 34 42 34 42 34 50 42 58 50 66 58 74 68 82 84
0
0
0
0
0
0
8
8 16 16 24 24 32 34 40 50
4 -4 4 -4 4 -4 12 4 20 12 28 20 36 30 44 46
6 -10 6 -10 6 -10 14 -2 22 6 30 14 38 24 46 40
11 -16 11 -16 11 -16 19 -8 27 0 35 8 43 18 51 34
16 -26 16 -26 16 -26 24 -18 32 -10 40 -2 48 8 56 24
15 -40 15 -40 15 -40 23 -32 31 -24 39 -16 47 -6 55 10
13 -60 13 -60 13 -60 21 -52 29 -44 37 -36 45 -26 53 -10
Table 54 – Required time tVAC above VIH(AC) {below VIL(AC)} for valid ADD/CMD transition
Slew Rate
[V/nS]
> 2.0
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
< 0.5
DDR3-1333/1600
tVAC @ 175mV [pS] tVAC @ 150mV [pS]
Min.
Max.
Min.
Max.
75
-
175
-
57
-
170
-
50
-
167
-
38
-
130
-
34
-
113
-
29
-
93
-
22
-
66
-
Note
-
30
-
Note
-
Note
-
Note
-
Note
DDR3-1866
tVAC @ 135mV [pS] tVAC @ 125mV [pS]
Min.
Max.
Min.
Max.
168
-
173
-
168
-
173
-
145
-
152
-
100
-
110
-
85
-
96
-
66
-
79
-
42
-
56
-
10
-
27
-
Note
-
Note
-
Note
-
Note
-
Note: Rising input signal shall become equal to or greater than VIH(AC) level and Falling input signal shall become equal to or
less than VIL(AC) level.
- 151 -
Publication Release Date: Dec. 08, 2014
Revision: A04