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W631GG6KB
10.6.2 DC and AC Input Levels for Single-Ended Data Signals
Table 18 – Single-Ended DC and AC Input Levels for DQ and DM
PARAMETER
SYMBOL
DDR3-1333, DDR3-1600
MIN. MAX.
DDR3-1866
MIN. MAX.
UNIT
NOTES
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic low
Reference Voltage
for DQ, DM inputs
V IH.DQ(DC100)
V IL.DQ(DC100)
V IH.DQ(AC150)
V IL.DQ(AC150)
V IH.DQ(AC135)
V IL.DQ(AC135)
V REFDQ(DC)
V REF + 0.100
V SS
V REF + 0.150
Note 2
V REF + 0.135
Note 2
0.49 x V DD
V DD
V REF - 0.100
Note 2
V REF - 0.150
Note 2
V REF - 0.135
0.51 x V DD
V REF + 0.100
V SS
-
-
V REF + 0.135
Note 2
0.49 x V DD
V DD
V REF - 0.100
-
-
Note 2
V REF - 0.135
0.51 x V DD
V
V
V
V
V
V
V
1, 5
1, 6
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
3, 4
Notes:
1. V REF = V REFDQ(DC) .
2. See section 10.12 “ Overshoot and Undershoot Specifications ” on page 121.
3. The AC peak noise on V REF may not allow V REF to deviate from V REFDQ(DC) by more than ± 1% V DD (for reference:
approx. ± 15 mV).
4. For reference: approx. V DD /2 ± 15 mV.
5. V IH(DC) is used as a simplified symbol for V IH.DQ(DC100) .
6. V IL(DC) is used as a simplified symbol for V IL.DQ(DC100) .
7. V IH(AC) is used as a simplified symbol for V IH.DQ(AC150) , and V IH.DQ(AC135) ; V IH.DQ(AC150) value is used when V REF +
0.150V is referenced, and V IH.DQ(AC135) value is used when V REF + 0.135V is referenced.
8. V IL(AC) is used as a simplified symbol for V IL.DQ(AC150) , and V IL.DQ(AC135) ; V IL.DQ(AC150) value is used when V REF -
0.150V is referenced, and V IL.DQ(AC135) value is used when V REF - 0.135V is referenced.
Publication Release Date: Dec. 09, 2013
Revision A05
- 101 -
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