参数资料
型号: MT48LC1M16A1S
厂商: Micron Technology, Inc.
英文描述: SYNCHRONOUS DRAM
中文描述: 同步DRAM
文件页数: 24/51页
文件大小: 1480K
代理商: MT48LC1M16A1S
16Mb: x16 SDRAM
16MSDRAMx16.p65
Rev. 8/99
Micron Technology, Inc., reserves the right to change products or specifications without notice.
1999, Micron Technology, Inc.
24
16Mb: x16
SDRAM
CLK
DQ
T2
T1
T4
T3
T6
T5
T0
COMMAND
WRITE - AP
BANK
n
NOP
NOP
NOP
NOP
D
IN
a
+ 1
D
IN
a
NOP
NOP
T7
BANK
n
BANK
m
ADDRESS
NOTE:
1. DQM is LOW.
BANK
n
,
COL
a
BANK
m
,
COL
d
READ - AP
BANK
m
Internal
States
t
Page Active
WRITE with Burst of 4
Interrupt Burst, Write-Back
Precharge
Page Active
READ with Burst of 4
t
tRP - BANK
m
D
OUT
d
D
OUT
d
+ 1
CAS Latency = 3 (BANK
m
)
RP - BANK
n
WR - BANK
n
Figure 26
WRITE w ith AUTO PRECHARGE Interrupted by a READ
DON
T CARE
CLK
DQ
T2
T1
T4
T3
T6
T5
T0
COMMAND
WRITE - AP
BANK
n
NOP
NOP
NOP
NOP
D
IN
d
+ 1
D
IN
d
D
IN
a
+ 1
D
IN
a
+ 2
D
IN
a
D
IN
d
+ 2
D
IN
d
+ 3
NOP
T7
BANK
n
BANK
m
ADDRESS
NOP
NOTE:
1. DQM is LOW.
BANK
n
,
COL
a
BANK
m
,
COL
d
WRITE - AP
BANK
m
Internal
States
t
Page Active
WRITE with Burst of 4
Interrupt Burst, Write-Back
Precharge
Page Active
WRITE with Burst of 4
Write-Back
WR - BANK
n
tRP - BANK
n
tWR - BANK
m
Figure 27
WRITE w ith AUTO PRECHARGE Interrupted by a WRITE
WRITE with AUTO PRECHARGE
3. Interrupted by a READ (with or without AUTO
PRECHARGE): A READ to bank m will interrupt a
WRITE on bank n when registered, with the data-
out appearing CAS latency later. The PRECHARGE
to bank n will begin after
t
WR is met, where
t
WR
begins when the READ to bank m is registered. The
last valid WRITE to bank n will be data-in registered
one clock prior to the READ to bank m (Figure 26).
4. Interrupted by a WRITE (with or without AUTO
PRECHARGE): A WRITE to bank m will interrupt a
WRITE on bank n when registered. The PRECHARGE
to bank n will begin after
t
WR is met, where
t
WR
begins when the WRITE to bank m is registered. The
last valid data WRITE to bank n will be data regis-
tered one clock prior to a WRITE to bank m (Figure
27).
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