Samsung M471B1G73AH0 - Manual (Page 15)

- 15 -
Unbuffered SODIMM
datasheet
DDR3 SDRAM
Rev. 1.0
11. AC & DC Output Measurement Levels
11.1 Single Ended AC and DC Output Levels
[ Table 7 ] Single Ended AC and DC output levels
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 40 Ω and an effective test
load of 25 Ω to V
TT
=V
DDQ
/2.
11.2 Differential AC and DC Output Levels
[ Table 8 ] Differential AC and DC output levels
NOTE : 1. The swing of +/-0.2xV
DDQ
is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40 Ω and an effective test
load of 25 Ω to V
TT
=V
DDQ
/2 at each of the differential outputs.
11.3 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 below.
[ Table 9 ] Single ended Output slew rate definition
NOTE : Output slew rate is verified by design and characterization, and may not be subject to production test.
[ Table 10 ] Single ended output slew rate
Description : SR : Slew Rate
Q : Query Output (like in DQ, which stands for Data-in, Query-Output)
se : Single-ended Signals
For Ron = RZQ/7 setting
Figure 6. Single-ended output slew rate definition
Symbol Parameter DDR3-800/1066/1333/1600 Units NOTE
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) 0.5 x V
DDQ
V
V
OL
(DC) DC output low measurement level (for IV curve linearity) 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
Symbol Parameter DDR3-800/1066/1333/1600 Units NOTE
V
OHdiff
(AC) AC differential output high measurement level (for output SR) +0.2 x V
DDQ
V 1
V
OLdiff
(AC) AC differential output low measurement level (for output SR) -0.2 x V
DDQ
V 1
Description
Measured
Defined by
From To
Single ended output slew rate for rising edge V
OL
(AC) V
OH
(AC)
V
OH
(AC)-V
OL
(AC)
Delta TRse
Single ended output slew rate for falling edge V
OH
(AC) V
OL
(AC)
V
OH
(AC)-V
OL
(AC)
Delta TFse
Parameter Symbol
DDR3-800 DDR3-1066 DDR3-1333 DDR3-1600
Units
Min Max Min Max Min Max Min Max
Single ended output slew rate SRQse 2.5 5 2.5 5 2.5 5 2.5 5 V/ns
V
OHdiff
(AC)
V
OLdiff
(AC)
delta TRdiff delta TFdiff
V
TT