CY7C006A-20AC Cypress Semiconductor Corp, CY7C006A-20AC Datasheet - Page 16

• Manufacturer Part Number: CY7C006A-20AC
• Description: IC SRAM 16KX8 DUAL 64LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C006A-20AC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 128K (16K x 8)
• Speed: 20ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1141

Document #: 38-06045 Rev. *D
Table 1. Non-Contending Read/Write
Table 2. Interrupt Operation Example (assumes BUSY
Table 3. Semaphore Operation Example
Notes:
43. If BUSY
44. If BUSY
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
CE
H
H
H
X
L
L
L
Function
R
L
= L, then no change.
R/W
= L, then no change.
H
H
X
X
L
X
Function
L
R
Flag
Inputs
L
Flag
R
Flag
Flag
OE
H
X
X
X
X
L
L
R/W
X
X
X
L
SEM
L
H
H
H
X
L
L
L
CE
X
X
L
L
I/O
High Z
Data Out
High Z
Data In
Data Out
Data In
L
0
–I/O
Outputs
I/O
1
1
0
1
0
0
1
1
1
0
1
OE
X
X
X
L
8
0
–I/O
Left
Left Port
L
8
I/O
A
7FFE
7FFF
0
Deselected: Power-Down
Read Data in Semaphore Flag
I/O Lines Disabled
Write into Semaphore Flag
Read
Write
Not Allowed
0L–14L
–I/O
X
X
L
=BUSY
1
1
1
0
0
1
1
0
1
1
1
8
Right
R
=HIGH)
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
INT
H
L
X
X
[43]
[44]
L
R/W
X
X
X
L
R
CE
Operation
X
L
L
X
R
CY7C006A/CY7C007A
CY7C016A/CY7C017A
OE
Status
X
X
X
L
Right Port
R
A
7FFE
7FFF
0R–14R
X
X
Page 16 of 20
INT
H
L
[44]
X
X
[43]
R
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