Справочник Пользователя для Hynix HMT325R7BFR8C-H9T7
Rev. 1.5 / Mar. 2012
30
AC & DC Input Measurement Levels
AC and DC Logic Input Levels for Single-Ended Signals
AC and DC Input Levels for Single-Ended Command and Address Signals
AC and DC Input Levels for Single-Ended Command and Address Signals
Notes:
1. For input only pins except RESET, Vref = VrefCA (DC).
2. Refer to "Overshoot and Undershoot Specifications" on page 43.
3. The ac peak noise on V
1. For input only pins except RESET, Vref = VrefCA (DC).
2. Refer to "Overshoot and Undershoot Specifications" on page 43.
3. The ac peak noise on V
Ref
may not allow V
Ref
to deviate from V
RefCA(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 simplified symbol for VIH.CA(AC175), VIH.CA(AC150), VIH.CA(AC135), and
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 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 simplified symbol for VIL.CA(AC175), VIL.CA(AC150), VIL.CA(AC135), and
8. VIL(ac) is used as 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.
9. Vref is measured relative to VDD at the same point, time and same device.
9. Vref is measured relative to VDD at the same point, time and same device.
Single Ended AC and DC Input Levels for Command and ADDress
Symbol
Parameter
DDR3-800/1066/1333/1600
Unit
Notes
Min
Max
VIH.CA(DC100)
DC input logic high
Vref + 0.100
VDD
V
1, 5
VIL.CA(DC100)
DC input logic low
VSS
Vref - 0.100
V
1, 6
VIH.CA(AC175)
AC input logic high
Vref + 0.175
Note2
V
1, 2, 7
VIL.CA(AC175)
AC input logic low
Note2
Vref - 0.175
V
1, 2, 8
VIH.CA(AC150)
AC Input logic high
Vref + 0.150
Note2
V
1, 2, 7
VIL.CA(AC150)
AC input logic low
Note2
Vref - 0.150
V
1, 2, 8
VIH.CA(AC135)
AC input logic high
-
-
V
1, 2, 7
VIL.CA(AC135)
AC input logic low
-
-
V
1, 2, 8
VIH.CA(AC125)
AC Input logic high
-
-
V
1, 2, 7
VIL.CA(AC125)
AC input logic low
-
-
V
1, 2, 8
V
RefCA(DC
)
Reference Voltage for
ADD, CMD inputs
0.49 * VDD
0.51 * VDD
V
3, 4, 9