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128Mb: x16, x32 Mobile SDRAM
MobileY95W_3V_F.p65 – Rev. F; Pub. 9/02
Micron Technology, Inc., reserves the right to change products or specifications without notice.
        2002, Micron Technology, Inc.
128Mb: x16, x32
MOBILE SDRAM
ADVANCE
Figure 12
Terminating a READ Burst
PRECHARGE command is that it requires that the com-
mand and address buses be available at the appropriate
time to issue the command; the advantage of the
PRECHARGE command is that it can be used to truncate
fixed-length or full-page bursts.
Full-page READ bursts can be truncated with the
BURST TERMINATE command, and fixed-length READ
bursts may be truncated with a BURST TERMINATE com-
mand, provided that auto precharge was not activated.
The BURST TERMINATE command should be issued 
x
cycles before the clock edge at which the last desired data
element is valid, where 
x
 equals the CAS latency minus
one. This is shown in Figure 12 for each possible CAS
latency; data element 
n 
+ 3 is the last desired data ele-
ment of a longer burst.
DON’T CARE
CLK
DQ
D
OUT
n
T2
T1
T4
T3
T6
T5
T0
COMMAND
ADDRESS
READ
NOP
NOP
NOP
NOP
BANK,
COL 
n
NOP
D
OUT
n
 + 1
D
OUT
n
 + 2
D
OUT
n
 + 3
BURST
TERMINATE
NOP
T7
NOTE: 
DQM is LOW.
CLK
DQ
D
OUT
n
T2
T1
T4
T3
T6
T5
T0
COMMAND
ADDRESS
READ
NOP
NOP
NOP
BANK,
COL 
n
NOP
D
OUT
n
 + 1
D
OUT
n
 + 2
D
OUT
n
 + 3
BURST
TERMINATE
NOP
CLK
DQ
D
OUT
n
T2
T1
T4
T3
T6
T5
T0
COMMAND
ADDRESS
READ
NOP
NOP
NOP
BANK,
COL 
n
NOP
D
OUT
n
 + 1
D
OUT
n
 + 2
D
OUT
n
 + 3
BURST
TERMINATE
NOP
X
 = 0 cycles
CAS Latency = 1
X
 = 1 cycle
CAS Latency = 2
CAS Latency = 3
X
 = 2 cycles