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参数资料
| 型号： | CY7C057V-15BBXC |
| 厂商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分类： | SRAM |
| 英文描述： | 3.3V 16K/32K x 36 FLEx36™ Asynchronous Dual-Port Static |
| 中文描述： | 32K X 36 DUAL-PORT SRAM, 15 ns, PBGA172 |
| 封装： | 15 X 15 MM, 1.25 MM HEIGHT, 1 MM PITCH, BGA-172 |
| 文件页数： | 11/26页 |
| 文件大小： | 713K |
| 代理商： | CY7C057V-15BBXC |
CY7C056V
CY7C057V
Document #: 38-06055 Rev. *E
Page 19 of 26
Table 1. Non-Contending Read/Write[47]
Inputs
Outputs
CE
R/W
OE
B0, B1, B2, B3
SEM
I/O0–I/O35
Operation
H
X
H
High Z
Deselected: Power-down
X
All H
H
High Z
Deselected: Power-down
L
X
H/L
H
Data in and High Z
Write to selected bytes only
L
X
All L
H
Data in
Write to all bytes
L
H
L
H/L
H
Data out and High Z
Read selected bytes only
L
H
L
All L
H
Data out
Read all bytes
X
H
X
High Z
Outputs disabled
H
L
X
L
Data out
Read data in semaphore flag
X
H
L
All H
L
Data out
Read data in semaphore flag
H
X
L
Data in
Write DIN0 into semaphore flag
X
All H
L
Data in
Write DIN0 into semaphore flag
L
X
Any L
L
Not allowed
Left Port
Right Port
Function
R/WL
CEL
OEL
A0L–13L
INTL
R/WR
CER
OER
A0R–13R
INTR
Set right INTR flag
L
X
3FFF
X
L[50]
Reset right INTR flag
X
L
3FFF
H[49]
Set left INTL flag
X
L[49]
L
X
3FFE
X
Reset left INTL flag
X
L
3FFE
H[50]
X
Table 3. Semaphore Operation Example
Function
I/O0–I/O8 Left
I/O0–I/O8 Right
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
Notes
47. CE is LOW when CE0 VIL and CE1 VIH.
48. A0L–14L and A0R–14R, 7FFF/7FFE for the CY7C057V.
49. If BUSYR=L, then no change.
50. If BUSYL=L, then no change.
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| CY7C0830AV-133AC | 制造商:Cypress Semiconductor 功能描述: 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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