mt48h4m16lf Micron Semiconductor Products, mt48h4m16lf Datasheet - Page 33

• Manufacturer Part Number: mt48h4m16lf
• Description: 64mb 4 Meg X 16 Mobile Sdram Features
• Manufacturer: Micron Semiconductor Products

Figure 29:
Figure 30:
PDF: 09005aef8237ed98/Source: 09005aef8237ed68
64mb_x16_Mobile SDRAM_Y24L_2.fm - Rev. C 10/07 EN
WRITE with Auto Precharge Interrupted by a READ
WRITE with Auto Precharge Interrupted by a WRITE
Note:
Note:
Internal
States
Internal
States
DQM is LOW.
DQM is LOW.
Command
Command
Bank m
Address
Bank m
Bank n
Address
Bank n
CLK
CLK
DQ
DQ
Page active
Page active
T0
NOP
T0
NOP
WRITE - AP
Write - AP
Bank n ,
Bank n,
Page active
Bank n
Page active
Bank n
Col a
Col a
T1
D
T1
D
a
a
IN
IN
WRITE with BL = 4
WRITE with BL = 4
33
a + 1
T2
a + 1
T2
D
D
NOP
NOP
IN
IN
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Bank m,
Read - AP
T3
a + 2
T3
Col d
Bank m
D
NOP
IN
Interrupt burst, Write-back
t
64Mb: 4 Meg x 16 Mobile SDRAM
READ with BL = 4
WR - Bank n
Bank m ,
WRITE - AP
Transitioning Data
Transitioning Data
Col d
Bank m
T4
T4
CL = 3 (Bank m)
D
NOP
Interrupt Burst, write-back
t
d
IN
WR - Bank n
WRITE with BL = 4
T5
T5
d + 1
NOP
NOP
D
IN
Precharge
t
RP - Bank n
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T6
T6
NOP
d + 2
D
D
NOP
t
OUT
d
Precharge
RP - Bank n
IN
Don’t Care
Don’t Care
T7
d + 3
T7
NOP
d + 1
D
D
NOP
t
t
WR - Bank m
IN
OUT
RP - Bank m
W rite-bank
Operations