HMT325S6EFR8C Datasheet, PDF (13/50 Pages) Hynix Semiconductor – DDR3 SDRAM Unbuffered SODIMMs Based on 2Gb E-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) DC input logic high Vref + 0.100
VDD
Vref + 0.100 VDD
V
VIL.CA(DC100) DC input logic low
VSS
Vref - 0.100
VSS Vref - 0.100 V
VIH.CA(AC175) AC input logic high Vref + 0.175
Note2
-
-
V
VIL.CA(AC175) AC input logic low
Note2
Vref - 0.175
-
-
V
VIH.CA(AC150) AC Input logic high Vref + 0.150
Note2
-
-
V
VIL.CA(AC150) AC input logic low
Note2
Vref - 0.150
-
-
V
VIH.CA(AC135) AC input logic high
-
-
Vref + 0.135 Note2
V
VIL.CA(AC135) AC input logic low
-
-
Note2 Vref - 0.135 V
VIH.CA(AC125) AC Input logic high
-
-
Vref + 0.125 Note2
V
VIL.CA(AC125) AC input logic low
-
-
Note2 Vref + 0.125 V
V_RefCA(DC)
Reference Voltage for
ADD, CMD inputs
0.49 * VDD
0.51 * VDD 0.49 * VDD 0.51 * VDD
V
1, 5
1, 6
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
1, 2, 7
1, 2, 8
3, 4
Notes:
1. For input only pins except RESET, Vref = VrefCA (DC).
2. Refer to "Overshoot and Undershoot Specifications" on page 26.
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.1.3 /Sep. 2013
13