Rev. 1.01
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
[ Table 8 ] Single-ended AC & DC input levels for DQ and DM
DDR3-800/1066
DDR3-1333/1600
Min.
Symbol
Parameter
Unit NOTE
Min.
Max.
1.35V
Max.
1,5a)
1,6a)
1,2
VIH.DQ(DC90)
VIL.DQ(DC90)
VIH.DQ(AC160)
VREF + 90
VSS
VDD
VREF + 90
VSS
VDD
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic low
mV
mV
mV
mV
mV
mV
VREF - 90
VREF - 90
VREF + 160
Note 2
-
-
-
V
IL.DQ(AC160)
IH.DQ(AC135)
IL.DQ(AC135)
VREF - 160
Note 2
-
1,2
V
VREF + 135
VREF + 135
Note 2
Note 2
VREF - 135
1,2
V
VREF - 135
Note 2
Note 2
1,2
Reference Voltage for DQ,
DM inputs
VREFDQ(DC)
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
V
3,4
1.5V
1,5b)
VIH.DQ(DC100)
VIL.DQ(DC100)
VIH.DQ(AC175)
VREF + 100
VSS
VDD
VREF + 100
VSS
VDD
DC input logic high
DC input logic low
AC input logic high
AC input logic low
AC input logic high
AC input logic low
mV
mV
mV
mV
mV
mV
1,6b)
1,2,7
1,2,8
1,2,7
1,2,8
VREF - 100
VREF - 100
VREF + 175
NOTE 2
-
-
V
IL.DQ(AC175)
IH.DQ(AC150)
IL.DQ(AC150)
VREF - 175
NOTE 2
-
-
V
VREF + 150
VREF + 150
NOTE 2
NOTE 2
VREF - 150
V
VREF - 150
NOTE 2
NOTE 2
Reference Voltage for DQ,
DM inputs
VREFDQ(DC)
0.49*VDD
0.51*VDD
0.49*VDD
0.51*VDD
V
3,4
NOTE :
1. For input only pins except RESET, V
= V
(DC)
REF
REFDQ
2. See ’Overshoot/Undershoot Specification’ on page 22.
3. The AC peak noise on V may not allow V to deviate from V
(DC) by more than ± 1% V (for reference : approx. ± 15mV)
REF
DD
REF
REF
b)
DD
4. For reference : approx. V /2 ± 15mV
a)
5. V (dc) is used as a simplified symbol for V
(
(
1.35V : DC90, 1.5V : DC100)
1.35V : DC90, 1.5V : DC100)
(AC175), V
IH
IH.CA
a)
b)
6. V (dc) is used as a simplified symbol for V
IL
IL.CA
7. V (ac) is used as a simplified symbol for V
(AC150) ; V
(AC175) value is used when V
+ 175mV is referenced, V
(AC150) value is used
IH.DQ
IH
IH.DQ
IH.DQ
IH.DQ
REF
when V
+ 150mV is referenced.
REF
8. V (ac) is used as a simplified symbol for V
(AC175), V
(AC150) ; V
(AC175) value is used when V
- 175mV is referenced, V
(AC150) value is used when
IL
IL.DQ
IL.DQ
IL.DQ
REF
IL.DQ
V
- 150mV is referenced.
REF
- 13 -
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