参数资料
型号: MT46V32M4TG-75L
厂商: Micron Technology, Inc.
英文描述: DOUBLE DATA RATE DDR SDRAM
中文描述: 双倍数据速率的DDR SDRAM内存
文件页数: 33/68页
文件大小: 2547K
代理商: MT46V32M4TG-75L
33
128Mb: x4, x8, x16 DDR SDRAM
128Mx4x8x16DDR_C.p65
Rev. C; Pub. 4/01
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2001, Micron Technology, Inc.
128Mb: x4, x8, x16
DDR SDRAM
PRELIMINARY
Figure 21
WRITE to READ
Odd Number of Data, Interrupting
t
DQSS (NOM)
CK
CK#
COMMAND
WRITE
NOP
NOP
NOP
NOP
NOP
ADDRESS
Bank
a
,
Col
b
Bank
a
,
Col
n
READ
T0
T1
T2
T3
T2n
T4
T5
NOTE
: 1. DI
b
= data-in for column
b
.
2. An interrupted burst of 4 is shown; one data element is written.
3.tWTR is referenced from the first positive CK edge after the last desired data-in pair (not the last two data elements).
4. A10 is LOW with the WRITE command (auto precharge is disabled).
5. DQS is required at T1n, T2, and T2n (nominal case) to register DM.
6. If the burst of 8 was used, DM would not be required at T3 -T4n because the READ command would mask the last
four data elements.
T1n
T6
T6n
T5n
t
WTR
CL = 2
DQ
DQS
DM
DI
b
DI
n
t
DQSS (MIN)
CL = 2
DQ
DQS
DM
DI
b
DI
n
t
DQSS (MAX)
CL = 2
DQ
DQS
DM
DI
b
DI
n
DON
T CARE
TRANSITIONING DATA
t
DQSS
t
DQSS
t
DQSS
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