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參數(shù)資料
| 型號(hào)： | CYK256K16SCCB |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 4-Mbit (256K x 16) Pseudo Static RAM |
| 中文描述： | 4兆位（256K × 16）偽靜態(tài)存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大小： | 307K |
| 代理商： | CYK256K16SCCB |
CYK256K16SCCB
Document #: 38-05526 Rev. *H
Page 8 of 10
Truth Table
[20]
Write Cycle No. 4 (BHE/BLE Controlled, OE LOW)
[18, 19]
CE
1
H
X
X
L
CE
2
X
L
X
H
WE
X
X
X
H
OE
X
X
X
L
BHE
X
X
H
L
BLE
X
X
H
L
Inputs/Outputs
High Z
High Z
High Z
Data Out (I/O
0
–I/O
15
)
Mode
Power
Deselect/Power-down
Deselect/Power-down
Deselect/Power-down
Read (Upper Byte and Lower
Byte)
Read (Upper Byte only)
Standby (I
SB
)
Standby (I
SB
)
Standby (I
SB
)
Active (I
CC
)
L
H
H
L
H
L
Data Out (I/O
0
–I/O
7
);
I/O
8
–I/O
15
in High Z
Data Out (I/O
8
–I/O
15
);
I/O
0
–I/O
7
in High Z
High Z
High Z
High Z
Data In (I/O
0
–I/O
15
)
Active (I
CC
)
L
H
H
L
L
H
Read (Lower Byte only)
Active (I
CC
)
L
L
L
L
H
H
H
H
H
H
H
L
H
H
H
X
L
H
L
L
L
L
H
L
Output Disabled
Output Disabled
Output Disabled
Write (Upper Byte and Lower
Byte)
Write (Lower Byte Only)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
L
H
L
X
H
L
Data In (I/O
0
–I/O
7
);
I/O
8
–I/O
15
in High Z
Data In (I/O
8
–I/O
15
);
I/O
0
–I/O
7
in High Z
Active (I
CC
)
L
H
L
X
L
H
Write (Upper Byte Only)
Active (I
CC
)
Switching Waveforms
(continued)
DATA I/O
ADDRESS
tHD
tSD
tSA
tHA
tAW
tWC
CE
1
WE
VALID DATA
tBW
BHE/BLE
tSCE
CE2
tPWE
DON’T CARE
t
HD
Note:
20.H = Logic HIGH, L = Logic LOW, X = Don’t Care.
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| CYK256K16SCCBU-55BVI | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:4-Mbit (256K x 16) Pseudo Static RAM |
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| CYK256K16SCCBU-70BAI | 制造商:Cypress Semiconductor 功能描述: |
| CYK256K16SCCBU-70BVI | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:4-Mbit (256K x 16) Pseudo Static RAM |
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