K4B1G0446C Datasheet, PDF (21/63 Pages) Samsung semiconductor – 1Gb C-die DDR3 SDRAM Specification

K4B1G04(08/16)46C
1Gb DDR3 SDRAM
9.3.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 VOL(AC) and VOH(AC)
for single ended signals as shown in Table 16 and figure 7.
[ Table 16 ] Single Ended Output slew rate definition
Description
Measured
From
To
Defined by
Single ended output slew rate for rising edge
VOL(AC)
VOH(AC)
VOH(AC)-VOL(AC)
Delta TRse
Single ended output slew rate for falling edge
VOH(AC)
VOL(AC)
VOH(AC)-VOL(AC)
Delta TFse
Parameter
Symbol
Single ended output slew rate SRQse
DDR3-800
Min
Max
2.5
5
DDR3-1066
Min
Max
2.5
5
DDR3-1333
Min
Max
2.5
5
DDR3-1600
Min
Max
TBD
5
Units
V/ns
[ Table 17 ] Single Ended Output slew rate
Note : Output slew rate is verified by design and characterization, and may not be subject to production test.
For Ron=RZQ/7 setting
V_DDQ
V_OH(AC)
V_REF
V_OL(AC)
V_SSQ
delta TFS
delta TRS
Figure 7. Single Ended Output Slew Rate definition
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 VOLdiff(AC) and
VOHdiff(AC) for differential signals as shown inTable 18 and figure 8.
[ Table 18 ] Differential Output slew rate definition
Description
Measured
From
To
Defined by
Differential output slew rate for rising edge
VOLdiff(AC)
VOHdiff(AC)
VOHdiff(AC)-VOLdiff(AC)
Delta TRdiff
Differential output slew rate for falling edge
VOHdiff(AC)
VOLdiff(AC)
VOHdiff(AC)-VOLdiff(AC)
Delta TFdiff
Parameter
Symbol
Single ended output slew rate SRQse
DDR3-800
Min
Max
5
10
DDR3-1066
Min
Max
5
10
DDR3-1333
Min
Max
5
10
DDR3-1600
Min
Max
TBD
10
Units
V/ns
[ Table 19 ] Differential Output slew rate
Note : Output slew rate is verified by design and characterization, and may not be subject to production test.
For Ron=RZQ/7 setting
V_DDQ
V_OHdiff(AC)
V_REF
delta TFdiff
delta TRdiff
V_OLdiff(AC)
V_SSQ
Figure 8. Differential Output Slew Rate definition
Page 21 of 63
Rev. 1.0 June 2007