1Gb: x8, x16 Automotive DDR2 SDRAM - Micron
1Gb: x8, x16 Automotive DDR2 SDRAM - Micron
1Gb: x8, x16 Automotive DDR2 SDRAM - Micron
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Figure 21: Nominal Slew Rate for t IS<br />
CK<br />
CK#<br />
V DDQ<br />
V IH(AC)min<br />
V IH(DC)min<br />
V REF(DC)<br />
V IL(DC)max<br />
V IL(AC)max<br />
V SS<br />
Setup slew rate<br />
falling signal<br />
Figure 22: Tangent Line for t IS<br />
CK<br />
CK#<br />
V DDQ<br />
V IH(AC)min<br />
V IH(DC)min<br />
V REF(DC)<br />
V IL(DC)max<br />
V IL(AC)max<br />
V SS<br />
V REF to AC<br />
region<br />
=<br />
�TF<br />
V REF to AC<br />
region<br />
Nominal<br />
line<br />
t IS<br />
V REF(DC) - V IL(AC)max<br />
�TF<br />
t IS<br />
Tangent<br />
line<br />
t IH<br />
Nominal<br />
slew rate<br />
t IH<br />
Nominal<br />
line<br />
Setup slew rate<br />
rising signal<br />
�TR<br />
t IS<br />
Setup slew rate<br />
rising signal<br />
�TF �TR<br />
<strong>1Gb</strong>: <strong>x8</strong>, <strong>x16</strong> <strong>Automotive</strong> <strong>DDR2</strong> <strong>SDRAM</strong><br />
Input Slew Rate Derating<br />
t IS<br />
=<br />
t IH<br />
Nominal<br />
slew rate<br />
V REF to AC<br />
region<br />
V IH(AC)min - V REF(DC)<br />
�TR<br />
t IH<br />
Tangent<br />
line<br />
V REF to AC<br />
region<br />
Tangent line (VIH[AC]min - VREF[DC] )<br />
=<br />
�TR<br />
PDF: 09005aef840eff89<br />
1gbddr2_ait_aat.pdf – Rev. C 7/11 EN 56 <strong>Micron</strong> Technology, Inc. reserves the right to change products or specifications without notice.<br />
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