CY7C006A-20JXCT Cypress Semiconductor Corp, CY7C006A-20JXCT Datasheet - Page 17

• Manufacturer Part Number: CY7C006A-20JXCT
• Description: CY7C006A-20JXCT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C006A-20JXCT

• 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: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1. Non-Contending Read/Write
Table 2. Interrupt Operation Example (assumes BUSY
Table 3. Semaphore Operation Example
Document Number: 38-06045 Rev. *F
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. If BUSY
48. If BUSY
CE
H
H
H
X
L
L
L
Function
R
L
R/W
= L, then no change.
= L, then no change.
H
H
X
X
X
Function
L
L
R
Flag
Inputs
L
Flag
R
Flag
Flag
OE
X
H
X
X
X
L
L
R/W
X
X
X
L
SEM
L
H
X
H
H
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
0
0
1
1
0
1
1
1
0
1
OE
X
X
X
L
8
0
–I/O
Left
Left Port
L
8
I/O
A
7FFF
7FFE
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
1
1
1
0
0
1
1
0
1
1
1
=BUSY
8
Right
R
=HIGH)
Semaphore free
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
Semaphore free
Left Port has semaphore token
Left port has semaphore token
INT
H
L
X
X
[47]
[48]
L
R/W
X
X
X
L
R
Operation
CE
X
L
L
X
R
OE
Status
CY7C006A/CY7C007A
CY7C016A/CY7C017A
X
X
X
L
Right Port
R
A
7FFF
7FFE
0R–14R
X
X
Page 17 of 22
INT
H
L
[48]
X
X
[47]
R
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