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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Input Electrical Characteristics and Operating Conditions<br />
Table 14: Input DC Logic Levels<br />
All voltages are referenced to VSS Parameter Symbol Min Max Units<br />
Input high (logic 1) voltage VIH(DC) VREF(DC) + 125 V 1<br />
DDQ mV<br />
Input low (logic 0) voltage VIL(DC) –300 VREF(DC) - 125 mV<br />
Table 15: Input AC Logic Levels<br />
Note: 1. V DDQ + 300mV allowed provided 1.9V is not exceeded.<br />
All voltages are referenced to VSS Parameter Symbol Min Max Units<br />
Input high (logic 1) voltage (-37E/-5E) VIH(AC) VREF(DC) + 250 V 1<br />
DDQ mV<br />
Input high (logic 1) voltage (-187E/-25E/-25/-3E/-3) VIH(AC) VREF(DC) + 200 V 1<br />
DDQ mV<br />
Input low (logic 0) voltage (-37E/-5E) VIL(AC) –300 VREF(DC) - 250 mV<br />
Input low (logic 0) voltage (-187E/-25E/-25/-3E/-3) VIL(AC) –300 VREF(DC) - 200 mV<br />
Note: 1. Refer to AC Overshoot/Undershoot Specification (page 51).<br />
Figure 10: Single-Ended Input Signal Levels<br />
1,150mV<br />
1,025mV<br />
936mV<br />
918mV<br />
900mV<br />
882mV<br />
864mV<br />
775mV<br />
650mV<br />
<strong>1Gb</strong>: <strong>x8</strong>, <strong>x16</strong> <strong>Automotive</strong> <strong>DDR2</strong> <strong>SDRAM</strong><br />
Input Electrical Characteristics and Operating Conditions<br />
V IH(AC)<br />
V IH(DC)<br />
VREF + AC noise<br />
VREF + DC error<br />
VREF - DC error<br />
VREF - AC noise<br />
Note: 1. Numbers in diagram reflect nominal <strong>DDR2</strong>-400/<strong>DDR2</strong>-533 values.<br />
PDF: 09005aef840eff89<br />
1gbddr2_ait_aat.pdf – Rev. C 7/11 EN 41 <strong>Micron</strong> Technology, Inc. reserves the right to change products or specifications without notice.<br />
� 2010 <strong>Micron</strong> Technology, Inc. All rights reserved.<br />
V IL(DC)<br />
V IL(AC)