HMT325R7AFR8A-G7 Datasheet, PDF (41/76 Pages) Hynix Semiconductor – 240pin DDR3 SDRAM Registered DIMM

Single Ended Output Slew Rate
When 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 are shown in table and figure below.
Single-ended Output slew Rate Definition
Description
Measured
From
To
Defined by
Single-ended output slew rate for rising edge
Single-ended output slew rate for falling edge
V_OL(AC)
V_OH(AC)
V_OH(AC)
V_OL(AC)
[V_OH(AC)-V_OL(AC)] / DeltaTRse
[V_OH(AC)-V_OL(AC)] / DeltaTFse
Notes:
1. Output slew rate is verified by design and characterisation, and may not be subject to production test.
Delta TRse
vOH(AC)
V∏
Delta TFse
vOl(AC)
Single Ended Output Slew Rate Definition
Single Ended Output slew Rate Definition
Output Slew Rate (single-ended)
Parameter
Symbol
DDR3L-800
Min
Max
DDR3L-1066
Min
Max
DDR3L-1333
Min
Max
Units
Single-ended Output Slew Rate SRQse 1.75
5¹⁾
1.75
5¹⁾
1.75
5¹⁾
V/ns
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
Note 1): In two cases, a maximum slew rate of 6 V/ns applies for a single DQ signal within a byte lane.
Case_1 is defined for a single DQ signal within a byte lane which is switching into a certain direction
(either from high to low or low to high) while all remaining DQ signals in the same byte lane are static(i.e
they stay at either high or low).
Case_2 is defined for a single DQ signal within a byte lane which is switching into a certain direction
(either from high to low or low to high) while all remaining DQ signals in the same byte lane are switching
into the opposite direction (i.e from low to high or high to low respectively). For the remaining DQ signal
switching into the opposite direction, the regular maximum limit of 5 V/ns applies.
Rev. 0.1 / Nov. 2009
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