W631GG6KB-15 Datasheet, PDF (99/158 Pages) Winbond – Double Data Rate architecture: two data transfers per clock cycle

W631GG6KB
9.6 DC and AC Input Measurement Levels
9.6.1 DC and AC Input Levels for Single-Ended Command and Address Signals
Table 17 – Single-Ended DC and AC Input Levels for Command and Address
PARAMETER
SYMBOL
DDR3-1333, DDR3-1600
MIN.
MAX.
DC input logic high VIH.CA(DC100) VREF + 0.100
VDD
DC input logic low VIL.CA(DC100)
VSS
VREF - 0.100
AC input logic high VIH.CA(AC175) VREF + 0.175
Note 2
AC input logic low VIL.CA(AC175)
Note 2
VREF - 0.175
AC input logic high VIH.CA(AC150) VREF + 0.150
Note 2
AC input logic low VIL.CA(AC150)
Note 2
VREF - 0.150
AC input logic high VIH.CA(AC135)
-
-
AC input logic low VIL.CA(AC135)
-
-
AC input logic high VIH.CA(AC125)
-
-
AC input logic low VIL.CA(AC125)
-
-
Reference Voltage
for ADD, CMD inputs
VREFCA(DC)
0.49 x VDD
0.51 x VDD
DDR3-1866
MIN.
MAX.
VREF + 0.100
VDD
VSS
VREF - 0.100
-
-
-
-
-
-
-
-
VREF + 0.135
Note 2
Note 2
VREF - 0.135
VREF + 0.125
Note 2
Note 2
VREF - 0.125
0.49 x VDD
0.51 x VDD
UNIT
V
V
V
V
V
V
V
V
V
V
V
NOTES
1, 5
1, 6
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
3, 4
Notes:
1. For input only pins except RESET#. VREF = VREFCA(DC).
2. See section 9.12 “Overshoot and Undershoot Specifications” on page 120.
3. The AC peak noise on VREF may not allow VREF to deviate from VREFCA(DC) by more than ± 1% VDD (for reference: approx.
± 15 mV).
4. For reference: approx. VDD/2 ± 15 mV.
5. VIH(DC) is used as a simplified symbol for VIH.CA(DC100).
6. VIL(DC) is used as a simplified symbol for VIL.CA(DC100).
7. VIH(AC) is used as a simplified symbol for VIH.CA(AC175), VIH.CA(AC150), VIH.CA(AC135), and VIH.CA(AC125); VIH.CA(AC175)
value is used when VREF + 0.175V is referenced, VIH.CA(AC150) value is used when VREF + 0.150V is referenced,
VIH.CA(AC135) value is used when VREF + 0.135V is referenced, and VIH.CA(AC125) value is used when VREF + 0.125V is
referenced.
8. VIL(AC) is used as a simplified symbol for VIL.CA(AC175), VIL.CA(AC150), VIL.CA(AC135) and VIL.CA(AC125); VIL.CA(AC175)
value is used when VREF - 0.175V is referenced, VIL.CA(AC150) value is used when VREF - 0.150V is referenced,
VIL.CA(AC135) value is used when VREF - 0.135V is referenced, and VIL.CA(AC125) value is used when VREF - 0.125V is
referenced.
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Publication Release Date: Feb. 27, 2013
Revision A04