Hynix HMT351R7BFR4C-PBT8 Datasheet download pdf (Page 40)

Rev. 1.5 / Mar. 2012 40

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.

Notes:

1. Output slew rate is verified by design and characterisation, and may not be subject to production test.

Single Ended Output slew Rate Definition

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 6V/ns applies for a single DQ signal within a byte lane.

Case 1 is a 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 a 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 switching into the opposite direction (i.e. from

low to high of high to low respectively). For the remaining DQ signal switching in to the opposite direction, the regular

maximum limite of 5 V/ns applies.

Single-ended Output slew Rate Definition

Description

Measured

Defined by

From To

Single-ended output slew rate for rising edge

OL(AC)

OH(AC)

-V

OL(AC)

] / DeltaTRse

Single-ended output slew rate for falling edge

OH(AC)

OL(AC)

OH(AC)

-V

OL(AC)

] / DeltaTFse

Output Slew Rate (single-ended)

DDR3-800 DDR3-1066 DDR3-1333 DDR3-1600

Units

Parameter Symbol 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

Delta TFse

Delta TRse

vOH(AC)

vOl(AC)

V∏

Single Ended Output Voltage(l.e.DQ)

Single Ended Output Slew Rate Definition

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 74 75

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Hynix HMT351R7BFR4C-PBT8 Datasheet Page 40

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