參數(shù)資料
型號(hào): HYB25D256160BTL-7F
廠商: INFINEON TECHNOLOGIES AG
英文描述: 256-Mbit Double Data Rate SDRAM, Die Rev. B
中文描述: 256兆雙倍數(shù)據(jù)速率SDRAM,模具版本B
文件頁數(shù): 41/77頁
文件大小: 1779K
代理商: HYB25D256160BTL-7F
HYB25D256[400/800/160]B[T/C](L)
256-Mbit Double Data Rate SDRAM, Die Rev. B
Page 41 of 77
2003-01-09, V1.1
Write to Precharge: Interrupting (Burst Length = 4 or 8)
DI a-b = data in for bank a, column b.
An interrupted burst is shown, 2 data elements are written.
1 subsequent element of data in is applied in the programmed order following DI a-b.
t
WR
is referenced from the first positive CK edge after the last desired data in pair.
The Precharge command masks the last 2 data elements in the burst, for burst length = 8.
A10 is Low with the Write command (Auto Precharge is disabled).
1 = Can be don't care for programmed burst length of 4.
2 = For programmed burst length of 4, DQS becomes don't care at this point.
3 = These bits are incorrectly written into the memory array if DM is low.
Don’t Care
T1
T2
T3
T4
T5
T6
NOP
NOP
NOP
PRE
Write
NOP
CK
CK
Command
Address
Maximum DQSS
DI a-b
1
1
2
DQS
DQ
DM
t
DQSS
(max)
t
RP
T1
T2
T3
T4
T5
T6
NOP
NOP
NOP
PRE
Write
NOP
CK
CK
Command
Address
BA a, COL b
BA (a or all)
Minimum DQSS
t
WR
t
RP
DI a-b
1
1
DQS
DQ
DM
t
DQSS
(min)
2
BA a, COL b
BA (a or all)
t
WR
3
3
3
3
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