Datasheet

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
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
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
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.
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