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參數(shù)資料
| 型號(hào)： | CY7C006A-15AI |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | SRAM |
| 英文描述： | 16K X 8 DUAL-PORT SRAM, 15 ns, PQFP64 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 1051K |
| 代理商： | CY7C006A-15AI |
CY7C006A/CY7C007A
CY7C016A/CY7C017A
Document #: 38-06045 Rev. *B
Page 16 of 20
Notes:
43. If BUSYR = L, then no change.
44. If BUSYL= L, then no change.
Table 1. Non-Contending Read/Write
Inputs
Outputs
CE
R/W
OE
SEM
I/O0–I/O8
Operation
H
X
H
High Z
Deselected: Power-Down
H
L
Data Out
Read Data in Semaphore Flag
X
H
X
High Z
I/O Lines Disabled
H
X
L
Data In
Write into Semaphore Flag
L
H
L
H
Data Out
Read
L
X
H
Data In
Write
L
X
L
Not Allowed
Table 2. Interrupt Operation Example (assumes BUSYL=BUSYR=HIGH)
Left Port
Right Port
Function
R/WL
CEL
OEL
A0L–14L
INTL
R/WR
CER
OER
A0R–14R
INTR
Set Right INTR Flag
L
X
7FFF
X
L[44]
Reset Right INTR Flag
X
L
7FFF
H[43]
Set Left INTL Flag
X
L[43]
L
X
7FFE
X
Reset Left INTL Flag
X
L
7FFE
H[44]
X
Table 3. Semaphore Operation Example
Function
I/O0–I/O8 Left
I/O0–I/O8Right
Status
No action
1
Semaphore free
Left port writes 0 to semaphore
0
1
Left Port has semaphore token
Right port writes 0 to semaphore
0
1
No change. Right side has no write access to semaphore
Left port writes 1 to semaphore
1
0
Right port obtains semaphore token
Left port writes 0 to semaphore
1
0
No change. Left port has no write access to semaphore
Right port writes 1 to semaphore
0
1
Left port obtains semaphore token
Left port writes 1 to semaphore
1
Semaphore free
Right port writes 0 to semaphore
1
0
Right port has semaphore token
Right port writes 1 to semaphore
1
Semaphore free
Left port writes 0 to semaphore
0
1
Left port has semaphore token
Left port writes 1 to semaphore
1
Semaphore free
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