![](http://datasheet.mmic.net.cn/390000/MT46V4M32_datasheet_16823570/MT46V4M32_57.png)
57
128Mb: x32 DDR SDRAM
4M32DDR_B.p65 – Rev. B, Pub. 7/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2002, Micron Technology, Inc.
128Mb: x32
DDR SDRAM
ADVANCE
POWER-DOWN MODE
CK
CK#
COMMAND
VALID1
NOP
ADDR
CKE
NOTE
: 1. If this command is a PRECHARGE (or if the device is already in the idle state), then the power-down
mode shown is precharge power-down. If this command is an ACTIVE (or if at least one row is
already active), then the power-down mode shown is active power-down.
2. No column accesses are allowed to be in progress at the time power-down is entered.
DQ
DM
DQS
NOP
VALID
t
CK
t
CH
t
CL
t
IS
t
IS
t
IH
t
IS
t
IS
t
IH
t
IH
t
IS
Enter 2
Power-Down
Mode
Exit
Power-Down
Mode
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T0
T1
Ta0
Ta1
Ta2
T2
NOP
DON T CARE
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VALID
VALID
t
PDIX
TIMING PARAMETERS
-33
-4
-5
SYMBOL
t
CH
t
CL
t
CK (5)
t
CK (4)
MIN
0.45
0.45
3.3
4
MAX
0.55
0.55
8
8
MIN
0.45
0.45
-
4
MAX
0.55
0.55
-
8
MIN
0.45
0.45
-
-
MAX
0.55
0.55
-
-
UNITS
t
CK
t
CK
ns
ns
-33
-4
-5
SYMBOL
t
CK (3)
t
IH
t
IS
t
PDIX
MIN
-
0.9
0.9
1
t
CK
+
t
IS
MAX
-
MIN
-
0.9
0.9
1
t
CK
+
t
IS
MAX
-
MIN
5
0.9
0.9
1
t
CK
+
t
IS
MAX
8
UNITS
ns
ns
ns
ns