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- 12 -
datasheet DDR3L SDRAM
Rev. 1.0
Unbuffered DIMM
11. AC & DC Input Measurement Levels
11.1 AC & DC Logic Input Levels for Single-ended Signals
[ Table 2 ] Single Ended AC and DC input levels for Command and Address
NOTE :
1. For input only pins except RESET
, V
REF
= V
REFCA
(DC)
2. See "Overshoot and Undershoot specifications" section.
3. The AC peak noise on V
REF
may not allow V
REF
to deviate from V
REF
(DC) by more than ± 1% V
DD
(for reference : approx. ± 15mV)
4. For reference : approx. V
DD
/2 ± 15mV
5. V
IH
(dc) is used as a simplified symbol for V
IH.CA
(
a)
1.35V : DC90,
b)
1.5V : DC100)
6. V
IL
(dc) is used as a simplified symbol for V
IL.CA
(
a)
1.35V : DC90,
b)
1.5V : DC100)
7. V
IH
(ac) is used as a simplified symbol for V
IH.CA
(AC175) and V
IH.CA
(AC150); V
IH.CA
(AC175) value is used when V
REF
+ 175mV is referenced and V
IH.CA
(AC150) value is
used when VREF + 150mV is referenced.
8. V
IL
(ac) is used as a simplified symbol for V
IL.CA
(AC175) and V
IL.CA
(AC150); V
IL.CA
(AC175) value is used when V
REF
- 175mV is referenced and V
IL.CA
(AC150) value is used
when V
REF
- 150mV is referenced.
Symbol Parameter
DDR3-800/1066/1333/1600
Unit NOTE
Min. Max.
1.35V
V
IH.CA
(DC90)
DC input logic high
V
REF
+ 90 V
DD
mV
1,5
a)
V
IL.CA
(DC90)
DC input logic low
V
SS
V
REF
- 90
mV
1,6
a)
V
IH.CA
(AC160)
AC input logic high
V
REF
+ 160
Note 2 mV 1,2
V
IL.CA
(AC160)
AC input logic low Note 2
V
REF
- 160
mV 1,2
V
IH.CA
(AC135)
AC input logic high
V
REF
+135
Note 2 mV 1,2
V
IL.CA
(AC135)
AC input logic lowM Note 2
V
REF
-135
mV 1,2
V
REFCA
(DC)
Reference Voltage for ADD,
CMD inputs
0.49*V
DD
0.51*V
DD
V3,4
1.5V
V
IH.CA
(DC100)
DC input logic high
V
REF
+ 100 V
DD
mV
1,5
b)
V
IL.CA
(DC100)
DC input logic low
V
SS
V
REF
- 100
mV
1,6
b)
V
IH.CA
(AC175)
AC input logic high
V
REF
+ 175
Note 2 mV 1,2,7
V
IL.CA
(AC175)
AC input logic low Note 2
V
REF
- 175
mV 1,2,8
V
IH.CA
(AC150)
AC input logic high
V
REF
+150
Note 2 mV 1,2,7
V
IL.CA
(AC150)
AC input logic low Note 2
V
REF
-150
mV 1,2,8
V
REFCA
(DC)
Reference Voltage for ADD,
CMD inputs
0.49*V
DD
0.51*V
DD
V3,4