Hynix 8GB DDR3 PC3-12800 HMT31GR7CFR4C-PB User Manual
Product codes
HMT31GR7CFR4C-PB
Rev. 1.0 / Jul. 2012
41
Differential Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined
and measured between VOLdiff (AC) and VOHdiff (AC) for differential signals as shown in table and figure
below.
below.
Differential Output slew Rate Definition
Differential Output Slew Rate Definition
Description
Measured
Defined by
From
To
Differential output slew rate for rising edge
V
OLdiff (AC)
V
OHdiff (AC)
[V
OHdiff (AC)
-V
OLdiff (AC)
] / DeltaTRdiff
Differential output slew rate for falling edge
V
OHdiff (AC)
V
OLdiff (AC)
[V
OHdiff (AC)
-V
OLdiff (AC)
] / DeltaTFdiff
Notes:
1. Output slew rate is verified by design and characterization, and may not be subject to production test.
1. Output slew rate is verified by design and characterization, and may not be subject to production test.
Differential Output Slew Rate
DDR3-800
DDR3-1066 DDR3-1333 DDR3-1600 DDR3-1866
Units
Parameter
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Differential Output Slew Rate
SRQdiff
5
12
5
12
5
12
5
12
5
12
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
Q: Query Output (like in DQ, which stands for Data-in, Query-Output)
se: Single-ended Signals
For Ron = RZQ/7 setting
Delta
TFdiff
Delta
TRdiff
vOHdiff(AC)
vOLdiff(AC)
O
Di
ff
ere
nt
ia
l Ou
tp
ut Vo
lta
ge
(i
.e. DQS
-DQS
)
Differential Output Slew Rate Definition