參數(shù)資料
型號: CY7C1472V33-250AXC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: DRAM
英文描述: 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL Architecture
中文描述: 4M X 18 ZBT SRAM, 3 ns, PQFP100
封裝: 14 X 20 MM, 1.40 MM HEIGHT, LEAD FREE, PLASTIC, MS-026, TQFP-100
文件頁數(shù): 10/28頁
文件大小: 378K
代理商: CY7C1472V33-250AXC
PRELIMINARY
CY7C1470V33
CY7C1472V33
CY7C1474V33
Document #: 38-05289 Rev. *E
Page 10 of 28
Partial Write Cycle Description
[1, 2, 3, 8]
Function (CY7C1470V33)
WE
H
L
BW
d
X
H
BW
c
X
H
BW
b
X
H
BW
a
X
H
Read
Write – No bytes written
Write Byte a – (DQ
a
and
DQP
a
)
Write Byte b – (DQ
b
and
DQP
b
)
Write Bytes b, a
Write Byte c – (DQ
c
and
DQP
c
)
Write Bytes c, a
Write Bytes c, b
Write Bytes c, b, a
Write Byte d – (DQ
d
and
DQP
d
)
Write Bytes d, a
Write Bytes d, b
Write Bytes d, b, a
Write Bytes d, c
Write Bytes d, c, a
Write Bytes d, c, b
Write All Bytes
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
L
L
LL
L
H
H
H
H
L
L
L
L
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
Function (CY7C1472V33)
WE
H
L
L
L
L
BW
b
x
H
H
L
L
BW
a
x
H
L
H
L
Read
Write – No Bytes Written
Write Byte a – (DQ
a
and
DQP
a
)
Write Byte b – (DQ
b
and
DQP
b
)
Write Both Bytes
Function (CY7C1474V33)
WE
H
L
L
L
BW
x
x
H
L
Read
Write – No Bytes Written
Write Byte X
(DQ
x
and
DQP
x)
Write All Bytes
All BW = L
Note:
8. Table only lists a partial listing of the Byte Write combinations. Any combination of BW
[a:d]
is valid. Appropriate Write will be done based on which Byte Write is
active.
相關(guān)PDF資料
PDF描述
CY7C1472V33-250BZC 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL Architecture
CY7C1472V33-250BZXC 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL Architecture
CY7C1474V33 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL Architecture
CY7C1474V33-167BGC 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL Architecture
CY7C1474V33-167BGI 72-Mbit (2M x 36/4M x 18/1M x 72) Pipelined SRAM with NoBL Architecture
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