2Gb: x16, x32 Mobile LPDDR2 SDRAM S4
Power-Down
Figure 75: REFRESH Command to Power-Down Entry
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
CK#
CK
t CKE
CKE 1
t IHCKE
t CKE
t ISCKE
CMD
REFRESH
Note:
1. CKE can go LOW t IHCKE after the clock on which the REFRESH command is registered.
Figure 76: ACTIVATE Command to Power-Down Entry
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
CK#
CK
t CKE
CKE 1
t IHCKE
t ISCKE
t CKE
CMD
ACTIVATE
Note:
1. CKE can go LOW at t IHCKE after the clock on which the ACTIVATE command is regis-
tered.
Figure 77: PRECHARGE Command to Power-Down Entry
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
CK#
CK
t CKE
CKE 1
t IHCKE
t ISCKE
t CKE
CMD
PRE
Note:
1. CKE can go LOW t IHCKE after the clock on which the PRECHARGE command is regis-
tered.
PDF: 09005aef83f3f2eb
2gb_mobile_lpddr2_s4_g69a.pdf – Rev. N 3/12 EN
100
Micron Technology, Inc. reserves the right to change products or specifications without notice.
2010 Micron Technology, Inc. All rights reserved.
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