mt48h16m16lfbf-75 Micron Semiconductor Products, mt48h16m16lfbf-75 Datasheet - Page 32

• Manufacturer Part Number: mt48h16m16lfbf-75
• Description: 256mb X16, X32 Mobile Sdram
• Manufacturer: Micron Semiconductor Products

Figure 21: Random WRITE Cycles
Figure 22: WRITE-to-READ
PDF:09005aef8219eeeb/Source: 09005aef8219eedd
256mb_x16_sdram_y36m_1.fm - Rev G 2/08 EN
Note:
Note:
In the case of a fixed-length burst being executed to completion, a PRECHARGE
command issued at the optimum time (as described above) provides the same operation
that would result from the same fixed-length burst with auto precharge. The disadvan-
tage of the PRECHARGE command is that it requires that the command 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 continuous
page bursts.
COMMAND
COMMAND
ADDRESS
ADDRESS
Each WRITE command may be to any bank. DQM is LOW.
BL = 2. The WRITE command may be to any bank, and the READ command may be to any
bank. DQM is LOW. CL = 2 for illustration.
CLK
CLK
DQ
DQ
WRITE
BANK,
COL n
BANK,
WRITE
COL n
D
T0
n
D
T0
IN
n
IN
n + 1
NOP
WRITE
BANK,
T1
D
COL a
IN
T1
D
a
IN
BANK,
COL b
READ
T2
WRITE
BANK,
COL x
T2
D
x
32
IN
DON’T CARE
T3
NOP
WRITE
BANK,
COL m
T3
D
m
IN
Micron Technology, Inc., reserves the right to change products or specifications without notice.
NOP
D
T4
OUT
b
256Mb: x16, x32 Mobile SDRAM
DON’T CARE
NOP
T5
b + 1
D
OUT
©2006 Micron Technology, Inc. All rights reserved
Operations