k4b2g0846b Samsung Semiconductor, Inc., k4b2g0846b Datasheet - Page 20
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k4b2g0846b
Manufacturer Part Number
k4b2g0846b
Description
2gb B-die Ddr3 Sdram Specification
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.K4B2G0846B.pdf
(61 pages)
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K4B2G04(08/16)46B
9.4 Differential Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined and measured between V
V
[ Table 18 ] Differential Output slew rate definition
Note : Output slew rate is verified by design and characterization, and may not be subject to production test.
[ Table 19 ] Differential Output slew rate
Description : SR : Slew Rate
Q : Query Output (like in DQ, which stands for Data-in, Query-Output
diff : Singe-ended Signals
For Ron = RZQ/7 setting
9.5 Reference Load for AC Timing and Output Slew Rate
Figure 8 represents the effective reference load of 25 ohms used in defining the relevant AC timing parameters of the device as well as output slew rate
measurements.
It is not intended as a precise representation of any particular system environment of a depiction of the actual load presented by a production tester. Sys-
tem designers should use IBIS or other simulation tools to correlate the timing reference load to a system environment. Manufacturers correlate to their
production test conditions, generally one or more coaxial transmission lines terminated at the tester electronics.
Differential output slew rate for rising edge
Differential output slew rate for falling edge
Differential output slew rate
OHdiff
(AC) for differential signals as shown inTable 18 and figure 7.
Parameter
Description
CK/CK
Figure 8. Reference Load for AC Timing and Output Slew Rate
Symbol
SRQse
DUT
Figure 7. Differential Output Slew Rate definition
Reference
V
Min
Point
5
DDQ
DDR3-800
delta
V
V
DQS
DQS
OHdiff
OLdiff
DQ
From
TFdiff
Max
10
(AC)
(AC)
Measured
Page 20 of 61
Min
V
V
5
DDR3-1066
OHdiff
OLdiff
To
(AC)
(AC)
delta
Max
10
TRdiff
25
Min
Ω
5
DDR3-1333
V
V
V
OHdiff
TT
OLdiff
(AC)
(AC)
V
V
Max
10
OHdiff
OHdiff
V
2Gb DDR3 SDRAM
TT
Rev. 1.0 December 2008
Delta TRdiff
Defined by
Delta TFdiff
(AC)-V
(AC)-V
= V
TBD
DDQ
Min
OLdiff
OLdiff
DDR3-1600
/2
(AC)
(AC)
Max
10
OLdiff
(AC) and
Units
V/ns