HMT451U6MFR8C Datasheet, PDF (16/55 Pages) Hynix Semiconductor – DDR3 SDRAM Unbuffered DIMMs Based on 4Gb M-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
DDR3-800/1066/1333/1600
Min
Max
DDR3-1866
Min
Max
Unit Notes
VIH.CA(DC100)
VIL.CA(DC100)
VIH.CA(AC175)
VIL.CA(AC175)
VIH.CA(AC150)
VIL.CA(AC150)
VIH.CA(AC135)
VIL.CA(AC135)
VIH.CA(AC125)
VIL.CA(AC125)
V_RefCA(DC)
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
AC input logic low
AC Input logic high
AC input logic low
Reference Voltage for
ADD, CMD inputs
Vref + 0.100
VSS
Vref + 0.175
Note2
Vref + 0.150
Note2
-
-
-
-
0.49 * VDD
VDD
Vref - 0.100
Note2
Vref - 0.175
Note2
Vref - 0.150
-
-
-
-
0.51 * VDD
Vref + 0.100
VSS
-
-
-
-
Vref + 0.135
Note2
Vref + 0.125
Note2
0.49 * VDD
VDD
Vref - 0.100
-
-
-
-
Note2
Vref - 0.135
Note2
Vref - 0.125
0.51 * VDD
V
1, 5
V
1, 6
V 1, 2, 7
V 1, 2, 8
V 1, 2, 7
V 1, 2, 8
V 1, 2, 7
V 1, 2, 8
mV 1, 2, 7
mV 1, 2, 8
V
3, 4
Notes:
1. For input only pins except RESET, Vref = VrefCA (DC).
2. Refer to "Overshoot and Undershoot Specifications" on page 29.
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. +/- 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 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 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.
Rev. 1.1 / Jul. 2013
16