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M393B1K73DH0 Datasheet, PDF (23/56 Pages) Samsung semiconductor – 240pin Registered DIMM
◁
Registered DIMM
datasheet
Rev. 1.3
DDR3 SDRAM
13. AC & DC Input Measurement Levels
13.1 AC & DC Logic Input Levels for Single-ended Signals
[ Table 2 ] Single-ended AC & DC input levels for Command and Address
Symbol
Parameter
DDR3-800/1066/1333/1600
Min.
Max.
DDR3-1866
Min.
Max.
Unit NOTE
VIH.CA(DC100) DC input logic high
VREF + 100
VDD
VREF + 100
VDD
mV 1,5
VIL.CA(DC100) DC input logic low
VSS
VREF - 100
VSS
VREF - 100
mV 1,6
VIH.CA(AC175) AC input logic high
VREF + 175
Note 2
-
-
mV 1,2,7
VIL.CA(AC175) AC input logic low
Note 2
VREF - 175
-
-
mV 1,2,8
VIH.CA(AC150) AC input logic high
VREF+150
Note 2
-
-
mV 1,2,7
VIL.CA(AC150) AC input logic low
Note 2
VREF-150
-
-
mV 1,2,8
VIH.CA(AC135) AC input logic high
-
-
VREF + 135
Note 2
mV 1,2,7
VIL.CA(AC135) AC input logic low
-
-
Note 2
VREF - 135
mV 1,2,8
VIH.CA(AC125) AC input logic high
-
-
VREF+125
Note 2
mV 1,2,7
VIL.CA(AC125) AC input logic low
-
-
Note 2
VREF-125
mV 1,2,8
VREFCA(DC)
Reference Voltage for ADD,
CMD inputs
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
V
3,4
NOTE :
1. For input only pins except RESET, VREF = VREFCA(DC)
2. See ’Overshoot/Undershoot Specification’ on page 18.
3. The AC peak noise on VREF may not allow VREF to deviate from VREF(DC) by more than ± 1% VDD (for reference : approx. ± 15mV)
4. For reference : approx. VDD/2 ± 15mV
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 a simplified symbol for VIH.CA(AC175), VIH.CA(AC150), VIH.CA(AC135) and VIH.CA(AC125); VIH.CA(AC175) value is used when VREF + 175mV is referenced
, VIH.CA(AC150) value is used when VREF + 150mV is referenced, VIH.CA(AC135) value is used when VREF + 135mV is referenced and VIH.CA(AC125) value is used when
VREF + 125mV is referenced.
8. VIL(ac) is used as a simplified symbol for VIL.CA(AC175) and VIL.CA(AC150), VIL.CA(AC135) and VIL.CA(AC125); VIL.CA(AC175) value is used when VREF - 175mV is refer-
enced, VIL.CA(AC150) value is used when VREF - 150mV is referenced, VIL.CA(AC135) value is used when VREF - 135mV is referenced and VIL.CA(AC125) value is used
when VREF - 125mV is referenced.
[ Table 3 ] Single-ended AC & DC input levels for DQ and DM
Symbol
Parameter
DDR3-800/1066
Min.
Max.
DDR3-1333/1600
Min.
Max.
DDR3-1866
Min.
Max.
Unit NOTE
VIH.DQ(DC100) DC input logic high
VREF + 100
VDD
VREF + 100
VDD
VREF + 100
VDD
mV 1,5
VIL.DQ(DC100) DC input logic low
VSS
VREF - 100
VSS
VREF - 100
VSS
VREF - 100 mV 1,6
VIH.DQ(AC175) AC input logic high
VREF + 175 NOTE 2
-
-
-
-
mV 1,2,7
VIL.DQ(AC175) AC input logic low
NOTE 2
VREF - 175
-
-
-
-
mV 1,2,8
VIH.DQ(AC150) AC input logic high
VREF + 150 NOTE 2 VREF + 150 NOTE 2
-
-
mV 1,2,7
VIL.DQ(AC150) AC input logic low
NOTE 2
VREF - 150
NOTE 2
VREF - 150
-
-
mV 1,2,8
VIH.DQ(AC135) AC input logic high
-
-
-
-
VREF + 135 NOTE 2
mV 1,2,7
VIL.DQ(AC135) AC input logic low
-
-
-
-
NOTE 2
VREF - 135 mV 1,2,8
VREFDQ(DC)
Reference Voltage for DQ,
DM inputs
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
V
3,4
NOTE :
1. For input only pins except RESET, VREF = VREFDQ(DC)
2. See ’Overshoot/Undershoot Specification’ on page 18.
3. The AC peak noise on VREF may not allow VREF to deviate from VREF(DC) by more than ± 1% VDD (for reference : approx. ± 15mV)
4. For reference : approx. VDD/2 ± 15mV
5. VIH(dc) is used as a simplified symbol for VIH.DQ(DC100)
6. VIL(dc) is used as a simplified symbol for VIL.DQ(DC100)
7. VIH(ac) is used as a simplified symbol for VIH.DQ(AC175), VIH.DQ(AC150) and VIH.DQ(AC135) ; VIH.DQ(AC175) value is used when VREF + 175mV is referenced,
VIH.DQ(AC150) value is used when VREF + 150mV is referenced.
8. VIL(ac) is used as a simplified symbol for VIL.DQ(AC175), VIL.DQ(AC150) ; VIL.DQ(AC175) value is used when VREF - 175mV is referenced, VIL.DQ(AC150) value is used when
VREF - 150mV is referenced.
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