Rev. 1.01
K4B2G0446D
K4B2G0846D
datasheet
DDR3L SDRAM
8. AC & DC Input Measurement Levels
8.1 AC & DC Logic input levels for single-ended signals
[ Table 7 ] Single-ended AC & DC input levels for Command and Address
DDR3-800/1066/1333/1600
Symbol
Parameter
Unit NOTE
Min.
Max.
1.35V
1,5a)
1,6a)
1,2
VIH.CA(DC90)
VIL.CA(DC90)
VIH.CA(AC160)
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 lowM
mV
mV
mV
mV
mV
mV
VREF - 90
VREF + 160
Note 2
V
IL.CA(AC160)
IH.CA(AC135)
IL.CA(AC135)
VREF - 160
Note 2
1,2
V
VREF+135
Note 2
1,2
V
VREF-135
Note 2
1,2
Reference Voltage for ADD,
CMD inputs
V
REFCA(DC)
0.49*VDD
0.51*VDD
V
3,4
1.5V
1,5b)
VIH.CA(DC100)
VIL.CA(DC100)
VIH.CA(AC175)
VREF + 100
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
VSS
VREF - 100
VREF + 175
Note 2
V
IL.CA(AC175)
IH.CA(AC150)
IL.CA(AC150)
VREF - 175
Note 2
V
VREF+150
Note 2
V
VREF-150
Note 2
Reference Voltage for ADD,
CMD inputs
V
REFCA(DC)
0.49*VDD
0.51*VDD
V
3,4
NOTE :
1. For input only pins except RESET, V
= V
(DC)
REF
REFCA
2. See "Overshoot and Undershoot specifications" section.
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
DD
4. For reference : approx. V /2 ± 15mV
a)
b)
5. V (dc) is used as a simplified symbol for V
(
1.35V : DC90, 1.5V : DC100)
IH
IH.CA
a)
b)
6. V (dc) is used as a simplified symbol for V
(
1.35V : DC90, 1.5V : DC100)
(AC175) and V
IL
IL.CA
IH.CA
7. V (ac) is used as a simplified symbol for V
(AC150); V
(AC175) value is used when V
+ 175mV is referenced and V
(AC150) value is
IH.CA
IH
IH.CA
IH.CA
REF
used when VREF + 150mV is referenced.
8. V (ac) is used as a simplified symbol for V
(AC175) and V
(AC150); V
(AC175) value is used when V
- 175mV is referenced and V
(AC150) value is used
IL
IL.CA
IL.CA
IL.CA
REF
IL.CA
when V
- 150mV is referenced.
REF
- 12 -
SAMSUNG [ SAMSUNG ]
