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1Gb: x8, x16 Automotive DDR2 SDRAM - Micron

1Gb: x8, x16 Automotive DDR2 SDRAM - Micron

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Figure 68: READ-to-Power-Down or Self Refresh Entry<br />

CK#<br />

CK<br />

Command<br />

CKE<br />

Address<br />

A10<br />

DQS, DQS#<br />

DQ<br />

T0 T1 T2<br />

READ<br />

Valid<br />

NOP NOP<br />

NOP<br />

RL = 3<br />

T3 T4 T5<br />

Valid<br />

DO DO DO DO<br />

Valid<br />

T6 T7<br />

NOP1<br />

Power-down 2 or<br />

self refresh entry<br />

Transitioning Data<br />

t CKE (MIN)<br />

Don’t Care<br />

Notes: 1. In the example shown, READ burst completes at T5; earliest power-down or self refresh<br />

entry is at T6.<br />

2. Power-down or self refresh entry may occur after the READ burst completes.<br />

Figure 69: READ with Auto Precharge-to-Power-Down or Self Refresh Entry<br />

CK#<br />

CK<br />

Command<br />

CKE<br />

Address<br />

A10<br />

DQS, DQS#<br />

DQ<br />

T0 T1 T2<br />

READ<br />

Valid<br />

NOP NOP<br />

NOP<br />

RL = 3<br />

<strong>1Gb</strong>: <strong>x8</strong>, <strong>x16</strong> <strong>Automotive</strong> <strong>DDR2</strong> <strong>SDRAM</strong><br />

Power-Down Mode<br />

T3 T4 T5<br />

Valid Valid<br />

DO DO DO DO<br />

Transitioning Data<br />

T6 T7<br />

NOP1<br />

Power-down or<br />

self refresh 2 entry<br />

t CKE (MIN)<br />

Don’t Care<br />

Notes: 1. In the example shown, READ burst completes at T5; earliest power-down or self refresh<br />

entry is at T6.<br />

2. Power-down or self refresh entry may occur after the READ burst completes.<br />

PDF: 09005aef840eff89<br />

1gbddr2_ait_aat.pdf – Rev. C 7/11 EN 116 <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.

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