Справочник Пользователя для Hynix HMT42GR7BFR4A-PBT8
Rev. 1.0 / May. 2014
28
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 41.
3. The ac peak noise on V
2. Refer to "Overshoot and Undershoot Specifications" on page 41.
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 refer-
ence: approx. +/- 13.5 mV).
4. For reference: approx. VDD/2 +/- 13.5 mV
5. These levels apply for 1.35 volt (see table above) operation only. If the device is operated at 1.5V (table "Single
5. These levels apply for 1.35 volt (see table above) operation only. If the device is operated at 1.5V (table "Single
Ended AC and DC Input Levels for DQ and DM" on page 29), the respective levels in JESD79-3 (VIH/L.CA(DC100),
VIH/L.CA(AC175), VIH/L.CA(AC150), VIH/L.CA(AC135), VIH/L.CA(AC125) etc.) apply. The 1.5V levels (VIH/
L.CA(DC100), VIH/L.CA(AC175), VIH/L.CA(AC150), VIH/L.CA(AC135), VIH/L.CA(AC125) etc.) do not apply when
the device is operated in the 1.35 voltage range.
VIH/L.CA(AC175), VIH/L.CA(AC150), VIH/L.CA(AC135), VIH/L.CA(AC125) etc.) apply. The 1.5V levels (VIH/
L.CA(DC100), VIH/L.CA(AC175), VIH/L.CA(AC150), VIH/L.CA(AC135), VIH/L.CA(AC125) etc.) do not apply when
the device is operated in the 1.35 voltage range.
Single Ended AC and DC Input Levels for Command and Address
Symbol
Parameter
DDR3L-800/1066
DDR3L-1333/1600
DDR3L-1866
Unit
Notes
Min
Max
Min
Max
Min
Max
VIH.CA(DC90)
DC input logic high
Vref + 0.09
VDD
Vref + 0.09
VDD
Vref + 0.09
VDD
V
1
VIL.CA(DC90)
DC input logic low
VSS
Vref - 0.09
VSS
Vref - 0.09
VSS
Vref - 0.09
V
1
VIH.CA(AC160)
AC input logic high
Vref + 0.160
Note2
Vref + 0.160
Note2
-
-
V
1,2,5
VIL.CA(AC160)
AC input logic low
Note2
Vref - 0.160
Note2
Vref - 0.160
-
-
V
1,2,5
VIH.CA(AC135)
AC Input logic high Vref + 0.135
Note2
Vref + 0.135
Note2
Vref + 0.135
Note2
V
1,2,5
VIL.CA(AC135)
AC input logic low
Note2
Vref - 0.135
Note2
Vref - 0.135
Note2
Vref - 0.135
V
1,2,5
VIH.CA(AC125)
AC Input logic high
-
-
-
-
Vref + 0.125
Note2
V
1,2,5
VIL.CA(AC125)
AC input logic low
-
-
-
-
Note2
Vref - 0.125
V
1,2,5
V
RefCA(DC
)
Reference Voltage for
ADD, CMD inputs
0.49 * VDD 0.51 * VDD 0.49 * VDD 0.51 * VDD 0.49 * VDD 0.51 * VDD
V
3,4