參數(shù)資料
型號： CY7C143-25JI
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： DRAM
英文描述： 2K x 16 Dual-Port Static RAM
中文描述： 2K X 16 DUAL-PORT SRAM, 25 ns, PQCC68
封裝： PLASTIC, LCC-68
文件頁數(shù)： 4/13頁
文件大?。?/td> 506K
代理商： CY7C143-25JI
CY7C133
CY7C143
Document #: 38-06036 Rev. *B
Page 4 of 13
Table 1. Non-Contending Read/Write Control
Control
I/O
Operation
R/W
LB
X
L
L
H
L
H
H
H
R/W
UB
X
L
H
L
H
L
H
H
CE
H
L
L
L
L
L
L
L
OE
X
X
L
L
H
H
L
H
I/O
0
–I/O
8
High Z
Data In
Data In
Data Out
Data In
High Z
Data Out
High Z
I/O
9
–I/O
17
High Z
Data In
Data Out
Data In
High Z
Data In
Data Out
High Z
Deselected: Power-Down
Write to Both Bytes
Write Lower Byte, Read Upper Byte
Read Lower Byte, Write Upper Byte
Write to Lower Byte
Write to Upper Byte
Read to Both Bytes
High Impedance Outputs
Table 2. Address BUSY Arbitration
Inputs
Outputs
Function
CE
L
X
H
X
L
CE
R
X
X
H
L
Address
L
Address
R
No Match
Match
Match
Match
BUSY
L
H
H
H
Note 3
BUSY
R
H
H
H
Note 3
Normal
Normal
Normal
Write Inhibit
[4]
32-Bit Master/Slave Dual-Port Memory Systems
Table 3. Arbitration Results
Case
1
2
3
4
5
6
7
8
Port
Winning Port
L
R
L
R
L
R
L
R
Result
Left
Read
Read
Read
Read
Write
Write
Write
Write
Right
Read
Read
Write
Write
Read
Read
Write
Write
Both ports read
Both ports read
L port reads OK R port write inhibited
R port writes OK L port data may be invalid
L port writes OK R port data may be invalid
R port reads OK L port write inhibited
L port writes OK R port write inhibited
R port writes OK L port write inhibited
Notes:
3.
4.
The loser of the port arbitration will receive BUSY = “L” (BUSY
or BUSY
= “L”). BUSY
and BUSY
cannot both be LOW simultaneously.
Writes are inhibited to the left port when BUSY
L
is LOW. Writes are inhibited to the right port when BUSY
R
is LOW.
LEFT
RIGHT
R/W
BUSY
R/W
BUSY
R/W
BUSY
BUSY
R/W
CY7C133
CY7C143
5V
5V
相關(guān)PDF資料
PDF描述
CY7C143-35JC 2K x 16 Dual-Port Static RAM
CY7C143-35JI 2K x 16 Dual-Port Static RAM
CY7C143-55JC 2K x 16 Dual-Port Static RAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CY7C143-55JC 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Cypress Semiconductor 功能描述:
CY7C1440AV25-167BZXC 功能描述:靜態(tài)隨機存取存儲器 36MB (1Mx36) 2.5v 167MHz Sync 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray
CY7C1440AV25-250BZXI 功能描述:靜態(tài)隨機存取存儲器 36MB (1Mx36) 2.5v 250MHz Sync 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray
CY7C1440AV25-250BZXIT 功能描述:靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray
CY7C1440AV33-167AXC 功能描述:靜態(tài)隨機存取存儲器 1Mx36 3.3V Sync PL 靜態(tài)隨機存取存儲器 COM RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray
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