Table 42: 34 Ohm Driver IOH/IOL Characteristics: VDD = VDDQ = 1.425V
MR1[5,1]
RON
Resistor
VOUT
Max
Nom
Min
Units
0, 1
34.3Ω
RON34(PD)
IOL @ 0.2 × VDDQ
14.0
8.3
7.5
mA
IOL @ 0.5 × VDDQ
23.3
20.8
18.7
mA
IOL @ 0.8 × VDDQ
37.3
33.3
23.5
mA
RON34(PU)
IOH @ 0.2 × VDDQ
37.3
33.3
23.5
mA
IOH @ 0.5 × VDDQ
23.3
20.8
18.7
mA
IOH @ 0.8 × VDDQ
14.0
8.3
7.5
mA
34 Ohm Output Driver Sensitivity
If either the temperature or the voltage changes after ZQ calibration, then the tolerance
Table 43: 34 Ohm Output Driver Sensitivity Definition
Symbol
Min
Max
Units
RON(PD) @ 0.2 × VDDQ
0.6 - dRONdTL × |ΔT| - dRONdVL × |ΔV|
1.1 + dRONdTL × |ΔT| + dRONdVL × |ΔV|
RZQ/6
RON(PD) @ 0.5 × VDDQ
0.9 - dRONdTM × |ΔT| - dRONdVM × |ΔV|
1.1 + dRONdTM × |ΔT| + dRONdVM × |ΔV|
RZQ/6
RON(PD) @ 0.8 × VDDQ
0.9 - dRONdTH × |ΔT| - dRONdVH × |ΔV|
1.4 + dRONdTH × |ΔT| + dRONdVH × |ΔV|
RZQ/6
RON(PU) @ 0.2 × VDDQ
0.9 - dRONdTL × |ΔT| - dRONdVL × |ΔV|
1.4 + dRONdTL × |ΔT| + dRONdVL × |ΔV|
RZQ/7
RON(PU) @ 0.5 × VDDQ
0.9 - dRONdTM × |ΔT| - dRONdVM × |ΔV|
1.1 + dRONdTM × |ΔT| + dRONdVM × |ΔV|
RZQ/7
RON(PU) @ 0.8 × VDDQ
0.6 - dRONdTH × |ΔT| - dRONdVH × |ΔV|
1.1 + dRONdTH × |ΔT| + dRONdVH × |ΔV|
RZQ/7
Note: 1.
ΔT = T - T(@ calibration), ΔV = VDDQ - VDDQ(@ calibration), and VDD = VDDQ.
Table 44: 34 Ohm Output Driver Voltage and Temperature Sensitivity
Change
Min
Max
Units
dRONdTM
0
1.5
%/°C
dRONdVM
0
0.13
%/mV
dRONdTL
0
1.5
%/°C
dRONdVL
0
0.13
%/mV
dRONdTH
0
1.5
%/°C
dRONdVH
0
0.13
%/mV
2Gb: x4, x8, x16 DDR3 SDRAM
Output Driver Impedance
PDF: 09005aef826aaadc
2Gb_DDR3_SDRAM.pdf – Rev. K 04/10 EN
66
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