HMT325R7CFR8A Datasheet, PDF (31/76 Pages) Hynix Semiconductor – DDR3L SDRAM Registered DIMM Based on 2Gb C-die

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
Single Ended AC and DC Input Levels for Command and Address
Symbol
Parameter
DDR3L-800/1066/1333/1600
Min
Max
Unit Notes
VIH.CA(DC90)
VIL.CA(DC90)
VIH.CA(AC160)
VIL.CA(AC160)
VIH.CA(AC135)
VIL.CA(AC135)
VIH.CA(AC125)
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC Input logic high
AC input logic low
AC Input logic high
Vref + 0.09
VSS
Vref + 0.160
Note2
Vref + 0.135
Note2
-
VDD
Vref - 0.09
Note2
Vref - 0.160
Note2
Vref - 0.135
-
V
1
V
1
V 1,2,5
V 1,2,5
V 1,2,5
V 1,2,5
V 1,2,5
VIL.CA(AC125)
AC input logic low
-
-
V 1,2,5
V_RefCA(DC)
Reference Voltage for ADD, CMD inputs
0.49 * VDD
0.51 * VDD
V
3,4
Notes:
1. For input only pins except RESET, Vref = VrefCA (DC).
2. Refer to "Overshoot and Undershoot Specifications" on page 44.
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. +/- 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 32), 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.
Rev. 1.0 / Aug. 2012
31