mt48h16m16lfbf-75 Micron Semiconductor Products, mt48h16m16lfbf-75 Datasheet - Page 28

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

Figure 15: READ-to-WRITE with Extra Clock Cycle
Figure 16: READ-to-PRECHARGE
PDF:09005aef8219eeeb/Source: 09005aef8219eedd
256mb_x16_sdram_y36m_1.fm - Rev G 2/08 EN
Note:
Note:
COMMAND
COMMAND
COMMAND
ADDRESS
ADDRESS
ADDRESS
CL = 3. The READ command may be to any bank, and the WRITE command may be to any
bank.
DQM is LOW.
DQM
CLK
CLK
CLK
DQ
DQ
DQ
BANK,
COL n
BANK a,
BANK a,
T0
READ
COL n
COL n
T0
T0
READ
READ
CL = 2
T1
NOP
T1
T1
NOP
NOP
CL = 3
T2
28
NOP
T2
T2
NOP
NOP
D
OUT
n
T3
NOP
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T3
T3
t HZ
NOP
NOP
D
OUT
D
D
n + 1
OUT
OUT
n
n
T4
256Mb: x16, x32 Mobile SDRAM
NOP
PRECHARGE
PRECHARGE
(a or all)
(a or all)
BANK
BANK
T4
T4
X = 1 cycle
D
n + 2
D
n + 1
DON’T CARE
OUT
OUT
T5
BANK,
COL b
X = 2 cycles
WRITE
D
T5
T5
IN
NOP
NOP
b
t
DS
D
n + 3
D
n + 2
OUT
OUT
t RP
t RP
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T6
T6
NOP
NOP
D
n + 3
OUT
DON’T CARE
Operations
BANK a,
BANK a,
ACTIVE
ACTIVE
T7
T7
ROW
ROW