CY7C007A-15JC Cypress Semiconductor Corp, CY7C007A-15JC Datasheet - Page 16

• Manufacturer Part Number: CY7C007A-15JC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C007A-15JC

• Density: 256Kb
• Access Time (max): 15ns
• Operating Supply Voltage (typ): 5V
• Package Type: LCC
• Operating Temp Range: 0C to 70C
• Supply Current: 280mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 68
• Word Size: 8b
• Lead Free Status / Rohs Status: Not Compliant

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