CY7C057V-12AXC Cypress Semiconductor Corp, CY7C057V-12AXC Datasheet - Page 19

• Manufacturer Part Number: CY7C057V-12AXC
• Description: CY7C057V-12AXC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C057V-12AXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 1.152M (32K x 36)
• Speed: 12ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption

Table 1. Non-Contending Read/Write
Table 2. Interrupt Operation Example (assumes BUSY
Table 3. Semaphore Operation Example
Document #: 38-06055 Rev. *E
Set right INT
Reset right INT
Set left INT
Reset left INT
No action
Left port writes 0 to Semaphore
Right port writes 0 to Semaphore
Left port writes 1 to Semaphore
Left port writes 0 to Semaphore
Right port writes 1 to Semaphore
Left port writes 1 to Semaphore
Right port writes 0 to Semaphore
Right port writes 1 to Semaphore
Left port writes 0 to Semaphore
Left port writes 1 to Semaphore
Notes
47. CE is LOW when CE
48. A
49. If BUSY
50. If BUSY
CE
H
X
X
H
X
H
X
L
L
L
L
L
0L–14L
Function
R
L
and A
R/W
=L, then no change.
=L, then no change.
L
X
X
H
H
X
H
H
X
L
L
R
flag
L
0R–14R
flag
Function
R
flag
flag
, 7FFF/7FFE for the CY7C057V.
OE
0
X
X
X
X
H
X
X
X
L
L
L
L
 V
IL
Inputs
and CE
R/W
X
X
X
L
B
L
0
1
, B
V
Any L
All H
All H
All H
All L
All L
H/L
H/L
1
CE
IH
X
X
X
X
, B
X
X
L
L
.
L
[47]
2
, B
I/O
3
OE
X
X
X
L
0
–I/O
L
Left Port
1
0
0
1
1
0
1
1
1
0
1
8
SEM
Left
H
H
H
H
H
H
X
L
L
L
L
L
A
3FFF
3FFE
L
0L–13L
I/O
= BUSY
X
X
0
–I/O
Data out and High Z
Data in and High Z
1
1
1
0
0
1
1
0
1
1
1
8
R
Right
= HIGH)
I/O
Outputs
Data out
Data out
Data out
Data in
Data in
Data in
High Z
High Z
High Z
INT
H
L
0
[49]
X
X
[50]
–I/O
L
Semaphore free
Left port has semaphore token
No change. Right side has no write access to
Semaphore
Right port obtains semaphore token
No change. Left port has no write access to semaphore
Left port obtains semaphore token
Semaphore free
Right port has semaphore token
Semaphore free
Left port has semaphore token
Semaphore free
35
[47, 48]
R/W
X
X
X
L
R
CE
X
X
L
L
R
Deselected: Power-down
Deselected: Power-down
Write to selected bytes only
Write to all bytes
Read selected bytes only
Read all bytes
Outputs disabled
Read data in semaphore flag
Read data in semaphore flag
Write D
Write D
Not allowed
OE
X
X
X
L
Right Port
IN0
IN0
Status
R
into semaphore flag
into semaphore flag
Operation
A
3FFF
3FFE
0R–13R
X
X
CY7C056V
CY7C057V
Page 19 of 26
INT
H
L
[50]
X
X
[49]
R
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