K4B1G0446D Datasheet, PDF (19/60 Pages) Samsung semiconductor – 1Gb D-die DDR3 SDRAM Specification

K4B1G04(08/16)46D
1Gb DDR3 SDRAM
9.0 AC and DC Output Measurement Levels
9.1 Single Ended AC and DC Output Levels
[ Table 14 ] Single Ended AC and DC output levels
Symbol Parameter
DDR3-800/1066/1333/1600
Units Notes
V_OH(DC) DC output high measurement level (for IV curve linearity)
0.8 x V_DDQ
V
V_OM(DC) DC output mid measurement level (for IV curve linearity)
V_OL(DC) DC output low measurement level (for IV curve linearity)
0.5 x V_DDQ
V
0.2 x V_DDQ
V
V_OH(AC) AC output high measurement level (for output SR)
V_TT + 0.1 x V_DDQ
V
1
V_OL(AC) AC output low measurement level (for output SR)
V_TT - 0.1 x V_DDQ
V
1
Note : 1. The swing of +/-0.1 x V_DDQ is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40Ω
and an effective test load of 25Ω to V_TT=V_DDQ/2.
9.2 Differential AC and DC Output Levels
[ Table 15 ] Differential AC and DC output levels
Symbol
Parameter
DDR3-800/1066/1333/1600
Units Notes
V_OHdiff(AC)
V_OLdiff(DC)
AC differential output high measurement level (for output SR)
AC differential output low measurement level (for output SR)
+0.2 x V_DDQ
-0.2 x V_DDQ
V
1
V
1
Note : 1. The swing of +/-0.2xV_DDQ is based on approximately 50% of the static singel ended output high or low swing with a driver impedance of 40Ω
and an effective test load of 25Ω to V_TT=V_DDQ/2 at each of the differential outputs.
9.3.Single Ended Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between V_OL(AC) and V_OH(AC)
for single ended signals as shown in Table 16 and figure 6.
[ Table 16 ] Single Ended Output slew rate definition
Description
Single ended output slew rate for rising edge
Single ended output slew rate for falling edge
Measured
From
To
V_OL(AC)
V_OH(AC)
V_OH(AC)
V_OL(AC)
Defined by
V_OH(AC)-V_OL(AC)
Delta TRse
V_OH(AC)-V_OL(AC)
Delta TFse
Note : Output slew rate is verified by design and characterization, and may not be subject to production test.
[ Table 17 ] Single Ended Output slew rate
Parameter
Symbol
Single ended output slew rate SRQse
DDR3-800
Min
Max
2.5
5
DDR3-1066
Min
Max
2.5
5
Description : SR : Slew Rate
Q : Query Output (like in DQ, which stands for Data-in, Query-Output
se : Singe-ended Signals
For Ron = RZQ/7 setting
DDR3-1333
Min
Max
2.5
5
V_OH(AC)
DDR3-1600
Min
Max
TBD
5
Units
V/ns
V_TT
V_OL(AC)
delta TFse
delta TRse
Figure 6. Single Ended Output Slew Rate definition
Page 19 of 60
Rev. 1.1 August 2008